(This is another in a series of articles based on posts I shared elsewhere. This one is based on a reply to a post concerning how important it is to move to a newer, improved sensor with higher photo site density. The immediate question had to do with how often the improvements would be significant enough to be seen, and the writer had correctly pointed out that there can be advantages to higher “MP count” when making very large, high quality prints.)

It is useful to try for a realistic understanding of how and when a higher MP sensor may show its advantages. This post tries to not take a position on brands and models, but rather to lay out a comparison of some relevant technical stuff — from which we can all draw our own individual conclusions.

There is a point below which you would be hard pressed to tell the difference between prints made from 22MP and 36MP cameras and above which you might be able to.(1) For example, virtually everyone would agree that the difference is typically completely invisible in small web images, and virtually everyone would agree that it could be visible if you closely inspect a print that is six feet wide. Since we could debate just where the boundary is — and, frankly, it is somewhat subjective — you could pick any point on the print size scale that you want and the principles will be the same.

Some Comparisons

Just for fun, let me use completely arbitrarily use two print sizes and base the comparisons on the 22MP Canon 5D Mark III and the Sony/Canon 36MP sensor cameras. Continue reading Concerning Megapixels →