03-12-2012, 07:18 AM
[quote name='Sathe Wild' timestamp='1331532602' post='16588']
If there is a problem (and neither DPR, nor IR noted it), it still might have nothing to do with the sensor. Maybe it's the AA filter. Unless you do side by side tests with A77/A65, you can't blame it on sensor.
Isn't there anyone in Germany that can lend you A77 or A65?
[/quote]
Neither DPR nor IR did any lens testing on the NEX 7. For their camera resolution analysis they used stopped down lenses in the center portion, certainly not the corners at large apertures. You can easily conclude that the corner smearing is just a side effect of the much higher pixel density and not a design flaw unless you look deeper into this.
One reason why we abandoned the camera testing again was the fact that camera tests must be hastily created in order to be ahead of or at least on par with the competition.However, to do it right you simply need time with a camera - not days but weeks - and neither of the popular test magazines can afford this or is willing to do so. This is also understandable because the product cycles are measured in months rather than years at the moment.
The corner smearing is not a local invention as already mentioned:
[url="http://www.bmupix.com/journal/2012/1/7/nex-7-part-2-corner-performance-with-zeiss-biogon-t-35mm-f20.html"]http://www.bmupix.com/journal/2012/1/7/nex-7-part-2-corner-performance-with-zeiss-biogon-t-35mm-f20.html[/url]
Stopped down the situation is Ok - I reckon this will be good enough for most users anyway. The camera can deliver sharp corners as we can see in the 50 OSS test.
Assuming that Sony will eventually release a 7n I would be willing to restart the tests once again. However, the rumor mill is silent in this respect.
I would be willing to do a reference test with the A77/A65 but this will not help the NEX 7 anyway - the NEX 7 does also suffer from the short register distance. That's a lesser issue with the A77/A65. The measured corner performance of the CZ 85 wasn't as good as on the A700 but worse than expected.
Klaus<br class="Apple-interchange-newline">
If there is a problem (and neither DPR, nor IR noted it), it still might have nothing to do with the sensor. Maybe it's the AA filter. Unless you do side by side tests with A77/A65, you can't blame it on sensor.
Isn't there anyone in Germany that can lend you A77 or A65?
[/quote]
Neither DPR nor IR did any lens testing on the NEX 7. For their camera resolution analysis they used stopped down lenses in the center portion, certainly not the corners at large apertures. You can easily conclude that the corner smearing is just a side effect of the much higher pixel density and not a design flaw unless you look deeper into this.
One reason why we abandoned the camera testing again was the fact that camera tests must be hastily created in order to be ahead of or at least on par with the competition.However, to do it right you simply need time with a camera - not days but weeks - and neither of the popular test magazines can afford this or is willing to do so. This is also understandable because the product cycles are measured in months rather than years at the moment.
The corner smearing is not a local invention as already mentioned:
[url="http://www.bmupix.com/journal/2012/1/7/nex-7-part-2-corner-performance-with-zeiss-biogon-t-35mm-f20.html"]http://www.bmupix.com/journal/2012/1/7/nex-7-part-2-corner-performance-with-zeiss-biogon-t-35mm-f20.html[/url]
Stopped down the situation is Ok - I reckon this will be good enough for most users anyway. The camera can deliver sharp corners as we can see in the 50 OSS test.
Assuming that Sony will eventually release a 7n I would be willing to restart the tests once again. However, the rumor mill is silent in this respect.
I would be willing to do a reference test with the A77/A65 but this will not help the NEX 7 anyway - the NEX 7 does also suffer from the short register distance. That's a lesser issue with the A77/A65. The measured corner performance of the CZ 85 wasn't as good as on the A700 but worse than expected.
Klaus<br class="Apple-interchange-newline">