Do more Megapixels mean better photo quality? :: Digital Photo Secrets
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Do more Megapixels mean better photo quality?

by David Peterson 159 comments

They're getting better every year. Camera makers and your local Best Buy salesman are always talking about the next model with more megapixels than the one that came before it. The new numbers make your current model seem obsolete. If you bought a camera with six megapixels a few years ago, you wish you could get a new one that gets twelve. But does it really mean anything? Does having more megapixels amount to better photo quality, or is it all just marketing hype?

Up to a certain point, megapixels do matter. The first digital camera models had horrible resolution. They simply didn't compare to film cameras in terms of image quality. Every picture you took looked pixelated and blocky. I remember my first digital camera. It was a Sony Digital Mavica. I got a whopping half of a megapixel out of that camera, and it was considered revolutionary at the time.

What are Megapixels?

So what are megapixels, and how do they relate to image quality? To put it simply, a single megapixel amounts to exactly one million pixels in an image. If you know the width and height in pixels of an image created by your camera, it's easy to calculate how many megapixels your camera gets. In the case of my Digital Mavica, I simply multiply 640 by 480 to get 307,200 pixels total. So I guess I was wrong. My first digital camera got 0.3 megapixels.

How Many Megapixels do I need?

How many megapixels you need depends on the how you are going to use your images. Here are some common uses:

Viewing On Megapixels Needed
Computer Monitor / Online 1-3 megapixels
6x4 prints 2 megapixels
10x8 inch prints 5 megapixels
14x11 inch prints or larger 7 megapixels

If you only enjoy your photos on your computer screen, or uploading to a photo website to share with friends, you really only need a 1 megapixel camera. That is because your computer monitor is usually about 2000x1000 pixels = 2 megapixels! 4k monitors still only have 8 megapixels. I'd err on the safe side and use a 6 megapixel camera or higher to enable cropping though, as I discuss below.

When you print your images, you will need more megapixels. If your megapixel count isn't enough for the size of image you print, your images won't look sharp.

Use the above table as a guide for the number of megapixels you need. Notice how I say "14x11 inch prints or larger" on the last line of the table. You only really need a 7 megapixel camera for any prints larger than 14x11. Even huge 30x40 posters. That's because we normally stand further away from larger prints, so we don't notice when they are less sharp!

Why you might need more megapixels

There are a few reasons why you might want to buy a camera with more megapixels than that listed in the table above. The most important is cropping. Sometimes you don't always capture what you want to capture in the right part of the frame. If you crop the image slightly, it looks a lot better than it would if you just left it alone. This is the main advantage of having a camera with more megapixels. It gives you a little extra room to play around with when you are cropping your photos.

But how much room do you really need? If you were to double the image size, that would be more than enough room to crop photos and still have a great looking image on your monitor screen. Now for a 6x4 print, we are up to 4 megapixels.

The other main reason is for the times when you take a photo you are really proud of. You will want to print it as large as possible to show it off! This is where having taken the shot with a 6 megapixels camera can really help!

The Megapixel Marketing Myth

But wait, I hear you say, these are incredibly small numbers! Why do camera makers keep making cameras with many more megapixels every year? The answer is simple. They need a reason to convince us in the public that the next model we buy will be a big upgrade from the one they we now. What better way to do it than with a number that steadily increases as camera makers make bigger sensors every year?

So, what is the lesson to be learned from all of this? Megapixels are great. They brought digital photography out of the dark ages and allowed photographers to make digital images that compare to film images. But megapixels are no reason to upgrade your current model. Instead, focus on a kind of image you would like to get and consider the limitations of your current camera model. You might need a different lens or a camera body that takes a quicker continuous stream of photos. If you do end up buying a new camera body, do it for reasons other than the fact that you will be getting more megapixels with it.

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  1. Pablo says:

    Hi Pete,

    Nice summary on this subject. Congrats!
    I've been looking for a mirrorless camera, and can't decide yet. I'd use it most likely for street photography on trips, plus some portrait pictures, 4k video might be a plus also. I think that the Panasonic GX85 would suit my needs perfectly well, but there are some other Sony models, such as A6300 that could work, considering that the latter has 24 Mp and bigger sensor. But I'm not sure if this is imperative on my case.
    I'm not an expert on photography by all means, so any advice is much appreciated.

  2. Shelby says:

    That is very helpful! I do not know much about cameras, but I am looking for something that will be good to take on my Europe honeymoon to take couple pictures and scenic pictures and eventually still be good for photographing babies and kids! I'm currently torn between a Panasonic Lumix Dmc-TZ3 and a Nikon Coolpix L32. If you could help me out that would be great!

  3. Cheryl Presser says:

    Hi, I really liked the info on the megapixel, my question would be is what if I want to purchase a trail camera for my husband would pixels really matter so much?

    • David Peterson says:

      HI Cheryl,

      No, megapixels probably won't matter that much as trail cameras tend to fire when the animal/subject is close enough to the camera to not need zoom (or cropping).

      Anything 4mpx or higher will be fine.


  4. Ibrahim Shalaby says:

    Dear David,
    I totally agree with you. Can you believe that I still use an ancient Nikon D40 (6 MP) and I get amazing photos?

    I use prime lenses and I am careful at framing so that I don't crop later and it works great for me. The only downfall is ISO which became more efficient in modern cams.

    Tell me what you think of that.

    Ibrahim Shalaby
    Alexandria Egypt

  5. Jaya says:

    This is very informative. I have a panasonic ZS60 and have been getting quite good photos with this but am looking to graduate to a mirrorless camera with interchangeable lenses that would allow me to get better macro photos and low light. I am torn between the Panasonic lumix G85 (16mp) and Sony A6500 (24mp). The Sony is about $500 more. My gut feeling is to go with the Panasonic and spend the extra money on lenses. would appreciate your thoughts....

    • David Peterson says:

      Hi Jaya,

      That would be my thought as well... go with the cheaper camera and spend more on lenses. You'll be able to upgrade your camera later without needing to change lenses. But remember to also look at other features (like WiFi) you may need.


  6. Samantha says:

    Hi, I have an Olympus E-PL1. I am interested in getting a new camera and eventually getting into taking family portraits, engagement pictures, etc. I have been doing research on Canon and Nikon and would like to spend at the most $1,000. Can you please give me some advice in what features to look for in a camera? I was reading the comments above and see that megapixels aren't everything.. Besides the amount of megapixels, I am not sure what other features to look for.

    Also, I have noticed that with my Olympus, the pictures turn out great but when I get them printed they seem too sharp. The quality looks great on the computer but not printed out. Could this be where I am getting the pictures printed or a feature on the camera? I have gotten pictures from my phone printed out by the same place (shutterfly and ritz camera) and they don't have that very sharp look and look the same way they do on the phone, so it is making me think that it is my camera.

    Thank you,

  7. Rahul says:


    Nice Article. So my computer screen is only of 2 MP. So what happens when i view higher resolution image (10 MP) on my computer screen? What happens to the remaining 8 Mega Pixles ( 10MP - 2 MP). And does it mean 2 MP & above 2 MP pictures look the same on computer screen?


    • David Peterson says:

      Hi Rahul,

      When you view a 10mp image on your 2pm monitor, it's resized to fit. So you are correct, a 10 mp image looks the same as a 2 mp image on your monitor. The difference is that when you zoom in to a 10 mp image you'll see more detail than if you zoom into a 2 mp image.


  8. Earnest Eldreth says:

    I am looking at purchasing a camera and I am torn between the Canon T5 and the T6i. I am looking for clarity and I would also like to be able to blow up some photos and put them on canvas. My wife has wanted a camera for a long time to maybe do some enviromental photography. What are the pros and cons between the two? One other thing, what would be a good choice of editing software?

    • David Peterson says:

      Hi Earnest,

      Either of those cameras will be okay. However, note they are on the lower end of the Canon range. If you want to take really sharp images to print on large canvas, I recommend moving up to the 60D, or even 6D. You'll get better quality images along with the better lenses available for those cameras.

      Editing software? It depends on what you want to do. I recommend Lightroom to most photographers, but Photoshop Elements or even Photoshop might work for you. I walk through the differences between these three editors on my information page for my Post Processing course:

      I hope that helps.


  9. Abhishek says:

    Greetings sir,
    1. I am very much confused which entry level model to buy between CANON 1200D and NIKON d3300. CANON 1200D has 18 megapixels while NIKON d3300 has 24 megapixels but it's smaller as compared to Canon 1200d. NIKON doesn't gives a great feel in hand as compared to the Canon one. I know there are other differences between the two. I have seen many reviews on YouTube but it's confusing me more. Personally I want a bigger robust camera body in hand, so therefore I'm inclined towards Canon 1200D but the megapixels and other features hint towards NIKON d3300. Kindly advise me. I will buy whichever you advise. Advice me after taking all difference between these two cameras into consideration.

    1. I also want to buy a macro plus long distance shooting entry level lens. It's between Tamron 70-300 mm AF 4-5.6 and Sigma 70-300 mm lens. Both don't have image stability. Reviews on YouTube says that at 300 mm the long range pics are blurred. Kindly advise which lens should I buy?

    Warm regards

    • David Peterson says:

      As my article explains, don't get hung up on megapixels. Go with the camera you like better, even if it has less megapixels.

      If you keep the shutter speed fast (1/300 sec or faster), you won't get stability problems with either of those 300mm lenses. Blur at these zooms usually is because the camera moves while the shutter is open. Keeping the shutter speed really short fixes those kinds of problems.

      I hope that helps.


  10. Jbickley00 says:

    I'm trying to decide between a canon eos1 mark iv with 16 mega pixels or a later model with 18.1 mp with about a thousand dollars difference. Is it worth the thousand dollars for 18 over 16 megapixels

    • David Peterson says:


      I assume you mean Canon 5D Mk3 vs Mk4?

      There are usually other improvements, like in low light capabilities. If you don't really need those improvements, or you are just starting out, go with the older model. Don't use Megapixels as your only reason to purchase a camera!


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