Resolution test, between crop (18MP) and fullframe (12.8MP)

Started Mar 12, 2013 | Discussions thread
Steen Bay Veteran Member • Posts: 6,978
Re: Resolution test, between crop (18MP) and fullframe (12.8MP)

ultimitsu wrote:

Steen Bay wrote:

ultimitsu wrote:

IT is basic stuff that lens performance is worse at F11 than F8, DOF is no excuse. how hard is it to shoot F4 on 60D and F5.6 on 5D?

http://forums.dpreview.com/forums/post/51030488

That is great, now he only got the purpose wrong.

Below is repeating what I already said:

OP's purpose was to disprove "that the 5Dc would outresolve the 60D at some point" - to prove that hypothesis can never happen. To prove what that, he needed to shoot a flat surface with a imperfect lens. for example 50 F1.8 at F1.8.

Well, all lenses except the 300/2.8L II sems to be "imperfect". The 24-70/2.8L II scores 11 P-MPix on 7D (60D isn't available) and 12 P-MPix on 5D. Tried to compare 5D at 35mm, f/11 vs. 7D at 24mm, f/8 in sharpness/profiles, but the chart wouldn't load. I'll try again later. My guess is that the 5D will have a slightly higher resolution at f/11 than the 7D has at f/8, according to DxO.

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