02-24-2011, 08:28 PM
[quote name='curriguy' timestamp='1298577646' post='6331']
Whereas, Lenstip states that the border performance is fairly dismal throughout the range at max aperture. 16mm isn't even "usable" by their terms until F8. 11mm and 13.5mm become usable for them at F4.0.
[/quote]
You might want to reread the lenstip test ... just to cite them:
Lenstip: "It’s worth adding that its border performance should be rated very high.
Stopping down to F/4 causes the values to reach, or even go beyond
the level 30 lpmm, so it enables us to get really crisp images. "
So ... Lenstip does say: "beyond 30lpmm you get really crisp images" ...
Lenstip does not say "below 30lpmm performance is dismal"
With that, your questions should already be answered.
Just my 1ct ... Rainer
Whereas, Lenstip states that the border performance is fairly dismal throughout the range at max aperture. 16mm isn't even "usable" by their terms until F8. 11mm and 13.5mm become usable for them at F4.0.
[/quote]
You might want to reread the lenstip test ... just to cite them:
Lenstip: "It’s worth adding that its border performance should be rated very high.
Stopping down to F/4 causes the values to reach, or even go beyond
the level 30 lpmm, so it enables us to get really crisp images. "
So ... Lenstip does say: "beyond 30lpmm you get really crisp images" ...
Lenstip does not say "below 30lpmm performance is dismal"
With that, your questions should already be answered.
Just my 1ct ... Rainer