It is very interesting that we really do seem to be in agreement. I do not think anyone has argued for more megapixels.

I will say, I have found a minor niche for more resolution these last 8 weeks (gulp, they have added up). But, as I have shot small birds with my 5DIV, I am occasionally finding myself cropping to ~1/9th the frame (so 1/3 horizontally and vertically). On my 5DIV that gives me a 2240 x 1493 image, or about 3.3 MPs. Playing with the math I used earlier, that would be 93 ppi if I wanted to print at 24 inches (so many people would be able to see pixels, most labs would caution against this print), at 150 ppi my max size would be 15x10 inch print and at 300 ppi my max print would be 7.5x5 inches.

What is impressing me here is that this still is not that bad. I can crop down to 1/9th of my frame and still print an 8x10. I am still downsizing for posting on the web for anywhere other than flickr. But, somehow, if I wanted to print larger than 15x10, really, I am starting to get into trouble if I crop by that amount.

So, there you go. A niche.

Interesting to me, but playing with the math, the rumored 45 MP of the R5 is not that much of an improvement (1/9th of frame at 150 ppi = 12 x 18 inch image rather than 15x10 in). Really, you would have to go to the scaled up M6II resolution (FF is 82.7 MP) and then a 1/9th of a frame at 150 ppi gives you a 24x16 in print.

I do find, with the small birds, that having room in the frame to work with helps while trying to track them as they move. So, this is a niche....someone who needs to crop to 1/9th of the frame and is printing up to 24x16 prints.