11-02-2010, 01:00 PM
[quote name='thw' timestamp='1288691107' post='3908']
The best test for all these theories is simply to carry out controlled testing on two cameras and see what you get.[/quote]
At this point I'll throw a link to a practical test I did before on the Canon 50D only. I was doing a quick test to see the practical impacts of varying aperture balancing DoF and diffraction. See here. It was at low magnification though, only 0.8x and I don't have a bigger sensor camera to repeat it with at the moment. But the main point to take away is diffraction isn't a knife edge effect, but a very gradual one, so I have no issue working in the diffraction region as long as I don't go too far in.
Returning to the thread topic of comparing effects of sensor size, a similar direct comparison between a 5D and 450D would be interesting. Might be hard since I don't own one any more.
The only problem when you don't have the kit to perform tests experimentally is you have to revert back to theory application. If done correctly there's no problem but to me there's always that bit of a reality gap of knowing something and seeing it.
The best test for all these theories is simply to carry out controlled testing on two cameras and see what you get.[/quote]
At this point I'll throw a link to a practical test I did before on the Canon 50D only. I was doing a quick test to see the practical impacts of varying aperture balancing DoF and diffraction. See here. It was at low magnification though, only 0.8x and I don't have a bigger sensor camera to repeat it with at the moment. But the main point to take away is diffraction isn't a knife edge effect, but a very gradual one, so I have no issue working in the diffraction region as long as I don't go too far in.
Returning to the thread topic of comparing effects of sensor size, a similar direct comparison between a 5D and 450D would be interesting. Might be hard since I don't own one any more.
The only problem when you don't have the kit to perform tests experimentally is you have to revert back to theory application. If done correctly there's no problem but to me there's always that bit of a reality gap of knowing something and seeing it.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.