Is a 300mm @21mp same as a 600mm@10mp?

Started Nov 14, 2008 | Discussions thread
Nicholas_H Regular Member • Posts: 278
Re: Here's some examples that may help

Wow...this thread is so confusing!

I am moving from a 40D to a 5DmII. One of my concerns is that my longest lens is a 70-200 and I'm trying to understand what moving from a 10.1MP 1.6 crop camera to a 21.1MP FF camera will mean in terms of cropping and keeping quality.

It looks like if I crop the 5DmII photo to 1.6 to match what I would have shot from the 40D, I'll end up with a photo that has a little less resolution than my 40D pic had, but the pixels in the 5DmII pic should be sharper and less noisy.

Is that correct and if not can someone explain this without invoking the spirit of calculus!


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