04-30-2014 07:00 PM
I have a Canon EOS Rebel 1000D and it is 10 megapixels. I took some outdoor scenic photos and uploaded them to a website. The website requires that the photos have at least 4 megapixels. I was told that my photos have less than 4 megapixels. If my camera has 10 megapixels does that mean that my pictures will automatically have 10 megapixels or does it depend on the individual photo itself? Having trouble with the whole megapixel thing and hope someone can explain.
04-30-2014 07:16 PM - edited 04-30-2014 07:22 PM
04-30-2014 07:26 PM
05-01-2014 11:23 AM
A web site said you need 4 MP file size? I find that odd. 4 MP form a cell phone is not the same as 4 MP from a EOS 1D.
Although each may have the required 4 MP, they would not even be comparable.
05-01-2014 12:26 PM
It's also possible that you used a program for post processing and inadvertantly downsized on export.
The Megapixel thing is pretty simple, sorta. The sensor in a digital camera is made up of an array of millions of little wells that capture photons and count them. Each one of these equates to a pixel on the screen when viewed at full size. The total amount of all these wells is know as the camera's resolution. Your camera's sensor is 3888 wells wide by 2592 wells high, for a total of 10 million+ pixels, maximum.
Although computer monitors continue to grow, the average monitor still isn't half that size. So people downsize them to fit monitors and speed up downloading times on the internet. There's no need to send full res files unless you plan on giving them to someone to print. Conversely, I don't put up full sized images of mine on the internet so that others can't take them and print them without my permission. I put up my photos on photosites and social media sites at a maximum of 1024, which in 2:3 aspect ratio is about 0.7 megs. Plenty for the internet. Compressed they can be half that size. I'm not sure what website you're working with, but I'd think twice if anyone told me that I have to submit pictures that are 4 MP or larger.