IQ of 7d w 15-85mm Vs 6d w 24-105mm?

Started Mar 8, 2013 | Questions thread
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qianp2k
qianp2k Forum Pro • Posts: 10,350
Re: What about The Digital Picture.com tests?

schmegg wrote:

qianp2k wrote:

technic wrote:

ultimitsu wrote:

Corrner performance is very close, neither is great. But since 15mmm F3.5 is more or less close to 24mm F5.6 on FF, 6D at 24mm f5.6 is indeed a lot better than 7D on 15mm F3.5.

P.S.: I'm a scientist, I have my own thoughts about 'mathematical certainties'

For someone who does not understand such basic principle, you must be a scientist of scientology.

mathematical certainties like yours only exist outside the real world, indeed like in scientology.

I have demo a real world 5000-pixel size photo that shows what amazing resolution a FF 5D2 with 24-105L can resolve. Can you please post a 5000-pixel size APS-C (7D or whatever) + 15-85 photo? Let's compare fine details/resolution please.

I'd personally like to see the same 5000-pixel size photo from the 5D (classic) for comparison. I think that might be particularly illuminating.

5D only takes 4368-pixel and delivers amazing 100% cropped.  I am still waiting 7D 100% cropped face snapshot or you can downsampling to the same 4368 pixel.  If 7D looks so mushy and noisy at 100% cropped, what's the point of 18mp?  Therefore I usually never crop my 60D photos more than 50% as they are simply not good.



5D 100% cropped



In fact, what don't you take my macro challenge. Shoot the same highly detailed subject with your 5D, 5D3 and 60D at maximum magnification?

I have 5D macro shots took years ago. And I can show you later that they are very sharp. I have not imported them into LR yet. Nevertheless on DXOMark test, 100L or 100/2.8 macro (that I just sold) still have more resolution on 5D than on 7D no mention 5D3. Macro lenses are still 1:1 magnification ratio on whatever cameras, right?

I'd like to see you post the results.

Sure I will.  And you will see lots of my macro photos soon with Sigma 150/2.8 OS on 5D3.  I sold old 100/2.8 macro.  I have not taken macro photos for years.

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