I propose to consider what kind of animals these are - JPG and RAW photo formats, what they affect and when you should pay attention to them. What is photo size and file weight, how are they measured and what do they depend on.
Almost all photo cameras can save photos in JPG format (even phone and tablet cameras). In all SLR and non-SLR cameras, as well as in advanced compacts, in addition to JPG, there is at least RAW and RAW+, and sometimes TIFF.
To understand the formats, you first need to agree on what is meant by the concepts of “size” of a photograph and “weight” of a file (photo). I propose to consider these concepts on more tangible objects... for example, on goodies.
The size of objects is measured in meters, the size of photographs is measured in pixels (px). If you measure the size of this bowl of berries, it will be about 10 centimeters in height and about 13 centimeters in width... approximately. That is, we are used to measuring objects in centimeters (meters, kilometers, and so on). If we talk about the photo of the same vase, then the original size of the photo is 7360 pixels (px) wide by 4912 pixels (px) high. This is the maximum photo size that my Nikon camera is capable of. To post this photo on the website, the photo size was reduced to 1200px by 798px (I’ll tell you why a little later).
What is a pixel? Taken with digital cameras or digitized on a scanner, photographs are a combination of tiny colored squares - pixels. If you zoom in on any photo, you will see these pixels. The more such pixels in a photo, the more detailed the picture.
A fragment of a photo enlarged a thousand times - squares of pixels are visible. This is exactly what happens when you need to print photos on paper. Here you will need one more indicator - the pixel density (resolution) that the printer (or other machine for printing photos) can print. The printing standard for photographs is 300 dpi (dots per inch). For example, for printing in beautiful glossy magazines, photos with a resolution of 300 dpi are used.
So that you don’t rack your brains over dividing the photo size by the resolution and converting inches into centimeters, any program for viewing and editing photos (for example, Photoshop) has a function for viewing the photo image size in centimeters. You will need it to understand the maximum size of a photo in good quality (with a resolution of 300 dpi) you can print on paper or other material media.
For example, this photo with tropical Frangispani flowers can be printed in size 61 cm by 32 cm.
Photo size in pixels and centimeters in Photoshop To find out the photo size in pixels and centimeters in Photoshop, you need to press the key combination Alt+Ctrl+I or go to the Image menu Image size.
Let's return to the reality of digital photos - to pixels and photo sizes in pixels. What happens if you reduce the number of pixels in a photo? The answer is that the quality of the photo will deteriorate. For example, I took a photo of the same bowl of berries at the beginning of the article and reduced the photo size to 150 pixels wide. With this reduction, the program destroys some of the pixels. The photo has become miniature:
Now let’s try to “stretch” the photo across the entire page:
A stretched picture looks cloudy and fuzzy As you can see, the detail is no longer the same, since some of the pixels (and with them the details) are missing.
Of course, if you use this reduced image as a small icon or a small image in a Power Point presentation, it will look quite normal, but it is clearly not suitable for printing in a half-page magazine.
If you plan to print photos someday, then save photos in the highest possible resolution, which your camera will only allow (carefully read the instructions for your camera to correctly adjust the photo size).
In some cases, you need to reduce the size of photos. As I wrote above, for the site I reduce the photo size to 1200 pixels on the long side. If you upload a photo in full size, the site pages will take a very long time to load, and many visitors may not like this (not to mention the Google and Yandex search engines).
Photo sizes are measured in pixels (px). The number of pixels determines the size of the photo on monitor screens, and what size the photo can be printed.
Now let's look at the "weight of the photograph". Historically, there has been a lot of confusion on this issue and the file size is quite often called the “weight of the photo,” which is more convenient than correct. File sizes are measured in megabytes (MB) or kilobytes (KB). And here it’s worth remembering that, unlike kilograms, where 1 kg = 1000g, 1 megabyte = 1024 kilobytes.
How this looks in practice: imagine the situation that your camera has a memory card that says 64GB (gigabytes). If you look at exactly how many bytes there are (right-click on “properties” on your computer), it turns out that there are 63567953920 bytes on this memory card and this is equal to 59.2 GB. How large the files your camera produces will determine how many photos will fit on that memory card. For example, I can fit 830 photo files in RAW format (read about formats below).
What determines the file size:
Many details - more weight of the photo For example, in this photograph with monkeys from Sri Lanka there are many small, clear (in the language of photographers, “sharp”) details and the file size of this photograph is 19.7MB, which is significantly larger than berries in a vase on a white background (5.2MB).
If you ask what size photo can I print from a photo that weighs 2MB. No one can answer you until they know the number of pixels. And it’s better, of course, to also look at the photo, since some craftsmen like to get a photo from the depths of the Internet, increase the number of pixels programmatically, and then want to print it on the cover of a magazine. It turns out as in the example above with a stretched photo of a vase 150 px wide.
File size (often called "photo weight") is measured in megabytes (MB) or kilobytes (KB) and depends on the format, pixel size, and detail of the photo.
And finally, we come to the issue of image formats and type of file compression, which also determine the size of the photo file.
Almost all photo cameras can save photos to JPG format(even cameras on phones and tablets). This is the most common image format and is “understood” by all computers and image viewing programs. Photos in JPG format can be uploaded to social networks, post on a blog, add to Word, Power Point files, and so on. JPG can be processed in Photoshop, Lightroom and other image editing programs.
From my practice: if I want to take a photo for a social network and quickly upload it, then I either take a photo with my phone or set the file format to jpg in my camera.
Something to remember about the jpg format is that it is a compressed format and has compression levels. The higher the compression ratio, the smaller the file size due to the reduction in detail and quality of the photo. Therefore, it is not recommended to repeatedly edit and resave (re-compress) the same photos in jpg format.
When saving a file in jpg format, the compression level is selected (example from Photoshop). In all SLR and non-SLR cameras, as well as in advanced compacts, in addition to JPG, there is at least RAW, and often also TIFF.
A little theory:
Personally, I never shoot in TIFF format. I can’t even think of why I need this if there is RAW. I can use TIFF without compression to save photos that I still plan to modify in Photoshop.
My camera is almost always in RAW format, since I plan to process (edit) photos in Lightroom or Photoshop. RAW has a number of significant disadvantages:
Why do professional photographers often prefer RAW over JPG? Because RAW.
The calculators in this article are devoted to the topic of printing digital photographs.
The first calculator helps you select a photo format for printing an image of known dimensions. Let's formulate the problem.
Given: We have a digital image of sizes known to us, for example, 3264 by 2448 pixels, and a set of standard formats offered by photo printing services. The format determines the linear dimensions of the photograph, for example, a 10x15 photograph has dimensions of 102 by 152 millimeters.
Required: Select from a set of formats the largest possible on which you can still print the image without losing quality.
To set photo formats, I created a separate reference book Photo formats, which can be expanded if necessary.
The only special knowledge that you need to have to find the answer is the knowledge that high-quality printing of a digital image requires a resolution of at least 300 dots (pixels) per inch (300 dpi), and more or less acceptable printing is possible with a resolution of at least 150 dots per inch. inch (150 dpi). Everything else is simple mathematical operations.
Graphically, the task is shown in the figure below.
The logic of finding an answer is simple - the linear dimensions of each format are converted into inches and then into pixels, based on the fact that there are 300 (150) pixels in one inch. Next, the resulting number is compared with the size of the image (there are certain nuances related to the ratio of height and width, but more on that in the second part). If the format size in pixels is larger than the size of our image (in the picture - the format to the right of the photo), then it will no longer work, because the photo will have to be stretched, and we will get a resolution worse than 300 (150) dpi. If the format size is smaller than the size of our image (in the picture - the format to the right of the photo), then it will fit - the photo will have to be compressed, and we will get a resolution better than 300 (150) dpi.
Of all suitable formats the calculator selects the maximum size format (there are no problems with printing smaller images - as far as I understand, you can print with a resolution of 1200 dpi).
Format size in pixels for 300 dpi resolution
Format size in pixels for 150 dpi resolution
The second calculator uses the dimensions of the already printed photograph and the dimensions of the original image to help determine the resulting resolution of the photograph and the part cropped out when scaling. Let's formulate the problem.
Given: An image of known dimensions is printed on a photograph of known dimensions. Since the value of the ratio of the height and width of the image and the value of the ratio of the height and width of the digital image, as a rule, do not coincide, when printing the image is scaled, obviously while maintaining the proportions. This is shown graphically in the figure below.
When scaling, as you can see, two options are possible:
the first is scaling with loss of part of the image,
the second is scaling, preserving the entire image, but leaving empty space in the image.
As an esthete, I chose the first option for calculations.
Thus, the first thing is required: to find the resulting resolution of the image and the part of the image that was not included in the image. Second, accordingly, this will be the difference between the used width (height) and the original width (height) of the image.
Width of the printed image, cm
Height of the printed image, cm
Image width in pixels
Photography is one moment of life that remains in memory for many years. Whatever happens, when you take a photograph in your hand, time seems to go back. Yes, you can’t return the past, but no one forbids you to remember!
Not a single person can imagine his life without photographs. Each important event must be captured on photographic paper. Even those who don't like taking photos for own use, cannot refuse them on documents. Sooner or later, everyone goes to a photo salon to take a passport photo or make a portfolio.
Due to different purposes, there are several sizes of images, each of which performs a separate function. What are the sizes of photographs for printing? Since the popularity of this procedure is growing, there are, accordingly, quite a lot of formats. We are talking about small sizes - this is a passport photo in 3 by 4 format or a regular photo for a photo album 10 by 15 or 13 by 18.
Photography is not vital necessary thing. You can live without pictures, because all memories are stored in memory. But, thanks to advanced technology, we still have the opportunity to look at captured moments and remember the moments. It's amazing that such ideas appear in our heads.
To prolong a happy moment, they take a snapshot, be it a wedding or the birth of a child - everything is captured. Afterwards, you just need to print out the received photos and put them in your album. More recently, people used film, but now digital technologies have pushed it out of the sales market. The big advantage of progress is that the resulting image is visible immediately, that is, there is no need to wait and think about how the photo turned out.
The most common type of photo is a passport photo, which has several requirements that must be met. One of the main ones is a 3 by 4 photograph. The size must comply with the standards, otherwise the documents will not be accepted for consideration.
When submitting a package of documents, government agencies require two photographs. This photo is taken within a few minutes and is completely ready for further use. In addition to the passport, photographs are often taken with student documents or a driver's license. A 3 by 4 photograph is printed, the size of which is identical to the passport version. Although it is worth considering that sometimes a 3.5 by 4.5 photo is accepted for a passport.
The photo salon knows all the regulations, so no need to worry. You just need to tell us which document you need to take a photo on. After all, photographers know what sizes photographs are available for printing. Professionals in their field have a full hand, dozens of people pass through them every day.
Among the common types, amateur photography is also distinguished. This simple photos, which depict both people and nature. The most popular format is a 10 by 15 photograph. A standard size in which the outline of a person or object is clearly visible. Ideal for decorating a photo album.
These are not all formats. But the question arises, what are the sizes of photographs for printing? There are quite a lot of them, for example, you can select an A4 landscape photograph, or, speaking in the language of a photographer, 21 by 30 centimeters. This size is used for large photographs, usually with the aim of creating a portfolio, since all the features of a person are clearly visible on it. Photography 13 by 18 is also in demand - this is a slightly smaller format. Typically used to frame a portrait.
Pixels are the smallest unit of size, in other words, the number of dots in an image. When there are few such points, the picture turns out blurry, with unclear contours. A large number of pixels makes the photo bright and clear; it can be enlarged to almost any size, for example, in 21 by 30 format.
The quality of the photograph and its size depend on the maximum resolution. Today there are almost no devices left that take low-quality pictures. Since even the most ordinary phones have a camera with two pixels in their arsenal.
This indicator determines in what format the photo can be printed in the future. Although such a standard size as 10 by 15 works anyway. The fewer pixels, the worse the quality of the photo. If the most ordinary photograph can be easily framed in size 10 by 15, then, for example, it will not be possible to enlarge it, since the picture will not be clear.
If you want to make quality professional photography, you need to contact a photo salon. A photographer, like no one else, knows how to direct the light correctly and will help you choose a beautiful pose. A professional will adjust the photo to the required format and print it on photo paper.
There are also two options for printing a photo. Although now such a service is in less demand, since many people are just on the computer. But, you can see that these are completely different feelings. After all, when you hold a photograph in your hand, it’s as if you are getting closer to the depicted moment.
In order to hold a photo in your hand, you need to print it, and this can be done in two ways: at home or in a salon. At home, photos are most often printed in a standard size of 10 by 15. But photos of a larger format cannot always be made of high quality, because this depends on the size of the photo paper and the capabilities of the printer.
The fact is that various events happen in life that you would like to remember for a long time. The most ordinary photo format cannot convey the entire atmosphere. When you take a larger photo, for example in a 21 by 30 format, you immediately become a participant in those happy moments.
Time tirelessly runs forward, but thanks to the photo, a person remains unchanged. So you can experiment and frame the photo in different formats, then see which photo will fit most harmoniously into an album or apartment interior.
Size, resolution and formats... What happens to the pixels? Are you buying a camera based on the megapixel count? Do you have problems posting photos online? Are your photos printed in poor quality even though they look great on screen? There seems to be some confusion between pixels and bytes (image size and file size), quality and quantity, size and resolution. In this lesson we will look at this extremely important information for any photographer.
So let's look at some basic concepts to make your life easier, your workflow more efficient, and your images at the right size for their intended use.
This image is 750 × 500 pixels with a resolution of 72 dpi, saved in compressed JPG format, which is 174kb. Let's figure out what this all means.
One of the biggest misunderstandings comes from the concept of resolution. If this is your case, trust me that you are not alone.
The problem is that permission can refer to many things, two of which can become a problem. I'll explain these two resolution concepts next, but they have one thing in common that I need to clarify first. They both have to do with pixels.
You've probably heard a lot about pixels, at least when you bought your camera. This is one of the clearest and most "essential" specs on the market, so I'll start there.
Digital photography is not one inseparable thing. If you zoom in far enough, you'll see that the image looks like a mosaic made up of small tiles, called pixels in photography.
The number of these pixels and the way they are distributed are two factors that need to be considered to understand what resolution is.
The first type of resolution refers to the number of pixels that form your photo. To calculate this resolution, you simply use the same formula you would use for the area of any rectangle; multiply the length by the height. For example, if you have a photo with 4500 pixels on the horizontal side and 3000 on the vertical side, it gives you 13,500,000. Since this number is very impractical, you can simply divide it by a million to convert it to megapixels. So 13,500,000/1,000,000 = 13.5 megapixels.
Another resolution is how you distribute the total number of pixels you have, which is commonly called pixel density.
Resolution is now expressed in dpi (or ppi), which is an abbreviation for dots (or pixels) per inch, and yes, per inch, it just so happens that this has not been translated into the metric system. So, if you see 72 dpi, that means the image will have a density of 72 pixels per inch; if you see 300 dpi, that's 300 pixels per inch, etc.
The final size of your image depends on the resolution you choose. If an image is 4500 x 3000 pixels, that means it will print at 15 x 10 inches if you set the resolution to 300 dpi, but at 72 dpi it will be 62.5 x 41.6 inches. Although the print size changes, you are not changing the size of your photo (image file), you are simply changing the organization of the existing pixels.
Imagine a rubber band, you can stretch it or compress it, but you don't change the amount of tape, you don't add or cut it.
So resolution and size are not the same thing, but they are related.
Because of the aforementioned relationship between size and resolution, many people think that megapixels mean quality. And in a sense, this is because the more pixels you have, the higher the pixel density.
However, aside from the quantity, you also have to consider the pixel depth, this is what determines the amount of tonal values your image contains. In other words, it is the number of colors per pixel. For example, a 2-bit depth can only store black, white, and two shades of gray, but a more common value is 8 bits. The values grow exponentially, for example with an 8-bit photo (2 to 8 = 256), you would have 256 shades of green, 256 shades of blue and 256 shades of red, which means about 16 million colors.
This is already more than the eye can distinguish, which means that 16-bit or 32-bit will look relatively the same to us. Of course, this means that your image will be heavier, even if the size is the same, because each pixel contains more information. This is why quality and quantity are not necessarily identical.
So quantity matters, but the size and depth of each pixel also determines quality. This is why you should look at all the specs of the camera and its sensor, not just the megapixel count. After all, there is a limit to the size you can print or view, moreover, it will only result in additional file size (megabytes) and will not affect the image size (megapixels) or quality.
How to select and control image size and file size?
First of all, you need to decide what maximum density you need. If you post your image online, you can do just fine with just 72 dpi, but that's too low to print the photo. If you're going to print, you'll want between 300 and 350 dpi.
Of course, we're speaking in general because every monitor and every printer will have slightly different resolutions. For example, if you want to print a photo to 8×10 inches, you'll need the image to be 300 dpi x 8" = 2400 pixels and 300 dpi x 10" = 3000 pixels (so 2400 x 3000 for an 8×10 print at 300 dpi). Anything larger will only take up space on your hard drive.
Open the Image Size menu and in the pop-up window you need to check the “resample” box. If you don't enable "resample", you will be redistributing pixels, as I explained at the beginning of the article.
You can also select the Proportion checkbox if you want the settings to be adjusted according to your changes. So the width changes when the height changes and vice versa.
8x10 inches at 300ppi, this is the size needed for an 8×10 print. Note the 3000 pixel sizex 2400.
750x500 pixels at 72ppi. This is web resolution and is the exact size of all images in this article. Inch size doesn't matter when publishing online - only pixel size matters.
At the top of the window you will also see the file size changing. This is the uncompressed version of your image, which is the direct connection I talked about in the first part of the article: fewer pixels means less information.
Now, if you still want to resize the file without resizing, then you can do so when you save the image. Before saving the photo, you can select the desired format:
If you don't want to lose any information, you need to keep the uncompressed format. The most common is TIFF.
If you don't mind losing a little information and having a lighter file, go to JPEG and choose how small you want it to be. Obviously, the lower the value you set, the more information you will lose. Luckily, it has a preview button so you can see the impact of your compression.
JPG high quality.
JPG low quality. Notice how it's pixelated and broken up? If you choose a very low quality, you risk degrading the image too much.
So that's what quality, quantity, size and resolution mean, and they all relate to pixels as they are the basic units that make up an image. Now that you know how to do best choice for printing, sending and storing your photos. All this information is laid out in more detail in the video course: “Secrets of creative photo processing for a beginner”; to read the description of the course, click on the picture below.
Have you ever been disappointed after printing a picture from the Internet? The images looked great on the computer screen, but they were either postage stamp sized or large and blurry. The culprit here is the picture resolution.
In fairness, it must be said: the permit was not invented to ruin our lives. The real reason for poor print quality is the very small pixel sizes of most images on the Internet: usually 640x480 pixels or even smaller, thanks to which they are quickly and efficiently displayed on a computer screen and loaded on websites.
What can we do to ensure that when printed, pictures from the Internet look as good as photos from a digital camera, and are of a decent size? The answer is simple: absolutely nothing. Most pictures don't have enough pixels to print high quality. Let's try to figure out why.
First of all, let's forget about downloading pictures from the Internet: by doing this, we violate copyright.
Let's look at the image resolution in general.
Resolution is a value that determines the number of dots (pixels) that fit in each inch of paper when printed. Obviously, since each image has a fixed number of pixels, the more you try to fit into one inch of paper, the smaller the resulting image size; The fewer pixels in one inch, the larger the image will be printed.
The concept of Resolution completely relates to printing, but has nothing to do with displaying an image on a monitor screen; that's why everything always looks bigger and better on the screen.
For example, consider this photo:
I can't help but smile every time I look at her. I took a picture of this horse while driving through one day. rural areas. As a rule, she always stands proudly, imperiously, her appearance is full of dignity and grace. But that day I found her in a completely ridiculous position: she was bending over somehow, a straw was tangled in her mane, and it seemed like the horse was chewing something. Or maybe she's trying hard to smile at me? Anyway, we'll take her photo as a reference.
First you need to check the size of the photo in Photoshop through the menu Image > Image Size (Ctlr + Alt + I). The dialog box that opens displays complete size information:
The Image Size dialog box is divided into two parts: the upper one is called Pixel Dimensions, the lower one is called Document Size. Dimension shows the width and length in pixels, and Print Size shows the actual dimensions of the image when printed on paper.
In the Pixel Dimensions subsection it is indicated: the width of our photo is 1200 pixels, the height is 800. This sounds like a lot (multiplying the width and height values, we get as many as 960,000 pixels in the picture!) Yes, this is really a lot for a monitor screen. A photo of this size may not fit on the screen! But, unfortunately, this does not mean that the print quality will be high. Pay attention to the Print Size subsection:
Here we will find information about the current resolution and the size of the image on paper. The resolution of the photo we are currently looking at is 72 pixels. This means that of the 1200 pixels that make up the width of the image, 72 will be printed on each inch of paper; Of the 800 pixels that make up the height, 72 will also be printed on each inch.
The value in the Resolution field applies equally to the width and height, but not to the total number of points. In other words, for every square inch of paper, 72 pixels from our image will be printed from left to right, and 72 pixels from top to bottom. The total number of pixels on each square inch of paper will be 5184 (72x72).
Let's do a little math to make sure the image's width and height are displayed correctly in the Document Size field. We know the width of the image is 1200 pixels and the height is 800 pixels. The resolution is currently 72 pixels per inch; to find out the dimensions on paper, you need to divide the number of pixels making up the width by 72; height is calculated similarly.
Width (1200 pixels) divided by 72 pixels per inch - 16.667 inches
Height (800 pixels) divided by 72 pixels per inch - 11.111 inches
So, the image size on paper will be 16.667 x 11.111 inches.
Let's look at the Document Size subsection again:
The dimensions are exactly as indicated! How big will the photo be, right?
Unfortunately, it's not that simple. This resolution is not enough to display the necessary sharpness and good quality when printing. Take a look at the image below: This is what the photo would look like if printed at 72 pixels per inch.
Try to imagine the quality at 11 x 16 inches.
Now the dots are too far apart, so there is no sharpness or detail. The quality is dull, too soft and therefore unattractive. Everything looks different on the screen: monitors are low-resolution devices. Even a photograph of relatively small sizes, for example, 640x480 pixels, looks great on them. However, printers are devices high resolution, and for high-quality printing you would need a value much higher than 72 pixels per inch.
How high should the resolution be to get a quality professional print? The generally accepted value is 300 pixels per inch; When printed, the pixels are very close to each other, making the image appear clear. You can even use a resolution of 240 pixels per inch and that will be enough.
Let’s change the resolution of our photo: in the Resolution field we’ll set it to 300. Please note that in the Pixel Dimensions subsection the values of 1200 and 800 are preserved.
Increasing the resolution from 72 to 300 pixels means that out of 1200 pixels of width, 300 pixels will be printed in each inch of paper, and the same amount of 800 pixels of height. With this compression, the photo on paper will be smaller in size. Therefore, under Document Size, the photo size is now 4 inches wide by 2.667 inches high.
Let's resort to mathematical calculations again:
Width (1200 pixels) divided by 300 pixels per inch - 4 inches
Height (800 pixels) divided by 300 pixels per inch - 2.667 inches
That's right!
The photo when printed will be much smaller in size than with a resolution of 72 pixels, but much better - we will enjoy a clear and well-detailed image.
Of course, no one will print photos at such non-standard sizes as 4x2.667 inches. How to get a high-quality 4x6 photo? We will have to turn to calculations again.
Let's say you took some pictures of a family vacation with a digital camera and want to print them so that the size of the photos is 6x4. We now know what to achieve professional quality Printing requires a resolution of at least 240 pixels per inch (preferably 300).
Let's look at both resolutions and decide which one is better. At 240 pixels/inch, the width and height will be as follows:
240 pixels multiplied by 4 inches in width - 960 pixels (width).
We multiply 240 pixels by 6 inches in height - 1440 pixels (height).
Total quantity: 960x1440 – 1382400.
So, the photo size should be 960x1440. Nowadays, most digital cameras have a resolution of 5 megapixels (megapixels or millions of pixels) or higher, so in this case it will not be a problem to print a 4x6-inch photo even at a resolution of 300 pixels/inch. The pixel dimensions will be 1200x1800 (total 2160000).
What to do when you need photographs that are not 4x6 inches, but 8x10?
240 pixels times 8 inches is 1920 pixels.
240 pixels times 10 inches is 2400 pixels.
Total: 1920x2400 – 4,608,000 pixels.
So, to print a good quality 8x10 inch photo, its pixel size must be 1920 pixels wide by 2400 pixels high (or vice versa), and the camera resolution must be about 4.6 million pixels.
Digital camera with a resolution of, for example, 4 megapixels will not give the required 4.6 megapixels, so it will not be possible to print photos from such an 8x10 camera with a resolution of 240 in high quality.
To print a photo measuring 8x10 inches and resolution 300 you will need:
300 pixels times 8 inches is 2400 pixels high.
300 pixels times 10 inches is 3000 pixels wide.
The total number is 7,200,000 pixels.
Now this is a really large number of points!
To print an 8x10 inch photo at 300 pixels/inch resolution, it would need to be 2400 pixels wide by 3000 pixels tall (or vice versa), for a total of 7.2 million pixels. This is quite a lot, and the camera must have a resolution of at least 7.2 megapixels! Don't forget that photos sometimes require cropping. Therefore, I highly recommend purchasing an 8MP camera!
