*** 5Dc vs 60D resolution test ***

Started Mar 17, 2013 | Discussions thread
Just another Canon shooter
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Re: please don't twist my photos
In reply to MAC, Apr 1, 2013

MAC wrote:

crop doesn't have a penalty.  only those looking at websites that send the crop sensor backwards have the wrong impression that crop has a penalty

All those sites usually have one big chart only. The move the crop camera backwards only if they use the same but not equivalent FL. And they do not, if they use equivalent FL. Since the discussion started by the OP is for equivalent FL, then they do not move anything, and their data is relevant. It all depends on the lenses used; and even if you use the same zoom, it may perform differently at different FL. So the sensible thing would be to look at a variety of comparisons at equivalent FL's and equivalent F-stops (here, MAC is right). There is no real need (but it would be interesting anyway)  to choose ISO 250 on FF since in many situations, you can afford the lower SS. When you cannot, the 5D will take some hit since its QE is considerably lower than the 60D, and there will be more apparent noise.

BTW, all those sites measure a fixed MTF, like MTF-20, MTF-50. It is just one of the many metrics for ... call it whatever you want.

This thread is getting very colorful, since nobody bothers to cleanup the previous replies!

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