Speaking of paired lines...Imaging Resource have something like that. You can compare for example paired line tests of the resolution of the Sony NEX-7 and the NEX-5N, or even the K-5 or the D7000, complete with lots of sample charts, of course.
Excellent. Max for a K-5 2800 lines to complete extinction. Clear at 2100 lines per picture height
For a D600 3600 lines to complete extinction. Clear at 2800 lines per picture height
For D800 Clear at 2,700 lines per picture height "Complete extinction of the pattern didn't occur before the limits of our chart." To high to be measured apparently.
The 645 D arguably was clear at 3000 lines per picture height and was also still visible at 4000 lh/ph
Just as a rule I've been unable to distinguish by eye, images less than 200 lines per picture height apart. It would have been useful if they'd indicated how many lines per picture height their chart went to, I'm assuming it was 4000 lines per picture height.
Starting from the k-5 at 2100, you double the sensor size and you get to 2600- 2700 and you double that again and you get to 3000. 75% of the resolution visible in a D800 is visible of in a k-5. But the D800 to 645D only gets you another 300. Fascinating stuff.
The D3200 has 2400 and 3400. That would suggest that going to a 24 Mp sensor could be good for Pentax in the MTF wars, but they still own't be competing with the D600 or D800. The Canon 5D Mk II resolves the same as the 24 MP D3200, even though it's FF. SO for those who claim no APS-c camera out resolves any FF, read em and weep.
The obvious conclusion here is that there is a distinct law of diminishing returns in the quest for more resolution.
I'm a little curious as to why the D600 and D800 are so close together in veiw of the much larger resolution of the sensor. It's always good to find new stuff.
At this point I'm left wondering though... after the line widths start to get really narrow, how much difference does that make. 2000 lines per picture height is resolving at a very high level. How much better is the 2700 of a D800. It's more, but you need to see it to decide.
Last edited by normhead; 12-08-2012 at 08:17 PM.