20MP vs. 20MP - comparing my 6D vs. 70D:

Started Nov 9, 2013 | Discussions thread
Le Kilt Senior Member • Posts: 2,266
Re: Except for reach

Just another Canon shooter wrote:

Le Kilt wrote:

Just another Canon shooter wrote:

Not much. With really long lenses, the resolution is limited by many factors like not being able to eliminate vibrations well, higher ISO at times (longer lenses are not terribly fast), too much air between you and the subject, etc. Then a cropped FF image would not be much different than an (already cropped) image from a crop camera with possibly a lower pixel density.

No, it's what's called pixels per duck, when the duck doesn't fill a FF sensor. If you get 10 Mpixels on your duck you will get more detail than with 4 Mpixels on it. Crop cameras like the 60D/70D/7D have a much higher pixel density.

So with the same lens, where the 70D puts 20 Mpixels, the 6D puts 7.8 Mpixels.

This only matters if there is more to resolve, and my point is that very often with long lenses, there is no much more.

And often there is plenty more.

BTW, in case it wasn't obvious enough, I'm referring to the difference in pixel density between Canon Crop and FF bodies when your focal length limited.

Sure, you can always find situations where it doesn't matter, everything is so blurred that you can't even see the damn bird... but when you can, and you've got ok conditions (and of course you have to master your settings), you'll have 20 Mpixels on that bird with a 70D when the 6D will put 7.8 Mpixels on it.  My experience is with 7D and 5D2/5D3, usually with the 100-400mm, where it's 18Mp compared with 8.2, and the difference is clear.

Have you had contrary experience?

And of course, there are higher mp FF sensors than Canon's.


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