sebboh wrote:
you are correct that what aperture diffraction becomes visible at is dependent on sensor, however the resolution limit of diffraction for any lens/aperture combination is the same independent of sensor. you can't see diffraction with the NEX-5N at f/4 because the sensor is not high enough resolution. the fact that you see diffraction on the NEX-7 earlier is a good thing - it means your sensor is able to achieve the maximum resolution physically possible for that aperture lens combo. a sensor that doesn't reach the diffraction limit as soon is not using the full resolving power of the lens.
Sebboh, now I understand your issue. It was never my intention to raise the subject "diffraction limited". As I do not care at all about this. My intention was to look for softening of the image due to diffraction because our wide angle lenses have to be stopped down for good corners.
So we want to do the balancing act between sharp corners and the centre image that gets softer due to diffraction. Without resorting to all theorie I just showed in my crops what the effect is of stopping down. As a macro specialist I am very familiar with all theorie and practice of diffraction, and that other generally misunderstood topic, depth of field
Herb1911 wrote:
Sebboh, now I understand your issue. It was never my intention to raise the subject "diffraction limited". As I do not care at all about this. My intention was to look for softening of the image due to diffraction because our wide angle lenses have to be stopped down for good corners.
So we want to do the balancing act between sharp corners and the centre image that gets softer due to diffraction. Without resorting to all theorie I just showed in my crops what the effect is of stopping down. As a macro specialist I am very familiar with all theorie and practice of diffraction, and that other generally misunderstood topic, depth of field ...Show more →
ah, i got the impression you were saying the 5N could be a better landscape camera since it doesn't show diffraction until later.
sebboh wrote:
ah, i got the impression you were saying the 5N could be a better landscape camera since it doesn't show diffraction until later.
Sebboh sorry for any misunderstanding here. The detail that the Nex 7 files provide is certainly a step up from the Nex 5n and very valuable for landscape work. However I value the Nex 5n very much how it deals with a lot of wide angle lenses. And resolution is just one ingredient of an image that is often not that important. After all we enjoy our images on the web and they have no resolution to speak of.
Herb
sebboh wrote:
you are correct that what aperture diffraction becomes visible at is dependent on sensor, however the resolution limit of diffraction for any lens/aperture combination is the same independent of sensor. you can't see diffraction with the NEX-5N at f/4 because the sensor is not high enough resolution. the fact that you see diffraction on the NEX-7 earlier is a good thing - it means your sensor is able to achieve the maximum resolution physically possible for that aperture lens combo. a sensor that doesn't reach the diffraction limit as soon is not using the full resolving power of the lens.
First afternoon out with the NEX-7. Not the best light. Also tried my Hexanon AR 40/1.8 for the first time. 1/200 at f/2.8 and ISO 800 IIRC. Nice lens for $50!
Near as I can tell, I must have been a few hundred yards from where Sebboh was yesterday!
Herb1911 wrote:
The comparisson between the Nex 7 with S-Z 24 f/1.8 and the EOS 5D mk2 with Zeiss ZE 35 f/2.0.
Herb, thanks for that!
Knowing that the ZE 35 f2 is sharper than the new 24 f1.8, it's quite an achievement
for NEX-7 I must say. Damn, I'll try to get one, although the touch screen for MF
will be missed
vallejo wrote:
Why not? Adapters shall be on the way!
Yes, since my NEX 7 hasn't shown up yet, I'm tempted to cancel my order and wait until we see what the Fuji can do. The issue with adapted lenses on the Fuji is that I've gotten very used to the 2.4 M pixel EVF on my NEX 5N with magnified view and focus peaking. The sensor on the Fuji may or may not be a step forward, but I think it's highly unlikely that manual focusing of adapted lenses will work as well as on the latest NEXs.
