I photograph birds for identification and record shots. I don't care so much about actually taking good photos, but photos that are good enough to serve as a good ID. Often this entails going full zoom and then heavily cropping in post processing. This usually leads to a fuzzy picture, but of course this is not unexpected.
I am wondering if I had more megapixels, would these cropped images come out sharper? I currently shoot with a Nikon D5000 - 12.3 megapixels. 300mm lens.
Below is a link to an original and a cropped version of one of these shots. If I upgraded from my 12.3 MP to, say, a D500 with 20.9 megapixels, would I get more detail in the zoomed/cropped version?
Appreciate any input here.