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

Started Mar 17, 2013 | Discussions thread
Keith Z Leonard
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Re: *** 5Dc vs 60D resolution test ***
In reply to qianp2k, Mar 18, 2013

qianp2k wrote:

Atoche wrote:

so the conclusions I can draw from reading all of this comparison and post:

1. resolution/detail is different thing than "sharpness"

I guess related. Wondering why DxOMark changed to perceptual sharpness.

http://en.wikipedia.org/wiki/Acutance is about perceived sharpness, low resolution is about missing detail.

2. the 60D seems to resolve more (seems to be easily measured with the dollar test)

In such very close distance 60D with 24-70L seems edge out 5D in very center area. In outside real world photo from distance it seems not very clear. But 5D is obviously sharper and has a bit more details at edges to my eyes.

3. the 5DC seems to be "sharper" (seems to be perception based, and "measured"/perceived better with the landscape photos)

Larger pixel and weak AA filter (but also subject to moire such as can see on the dollar bill in close distance).

Also http://en.wikipedia.org/wiki/Acutance which can happen when under-sampling gradients.

so this means to me that each camera has it's strength (60D - resolution, 5DC sharpness) and comparing them would cause and endless circle of discussion...

Oh, yeah. With better lenses 60D is very closed or even surpass (I don't have 300L/2.8 IS II that will show clearer). However I found 60D photos have more purple fringes with all respective lenses as shown in MAC's sample.

Yeah, more CA makes sense, as you increase resolution this is expected, I think.

I own the 5DC and the 7D - the 5DC rarely needs any sharpening at all, and light NR - where the 7D requires heavy sharpening and NR post. I am assuming, of course, the 60D and 7D are "similar enough" to support this opinion.

That's my experience also. I used to use 5D for landscape and portrait (now I use 5D3) and 60D in zoo, safari.. where needs 'reach'. They each has advantage.

Does the 7D "require" it because you are looking at a 100% view of both images where the 7D pixels are WAY more magnified than the 5D pixels?  Or at the image level is the 7D softer?  Interestingly at the image level it could even be the fault of the algorithm used to resize it to your screen.  Print is probably the best way to test this.  Or resizing one of the images to match the resolution of the other.

Interesting test.

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