12-16-2010, 05:46 AM
[quote name='Brightcolours' timestamp='1292453774' post='5024']
So... we have lens A, B and C doing more or less equally well at f2, f2.8, f4, f8 and so on. Distortion, sharpness, vignetting, bokeh, they are all close.
B and C do more or less equally well at f1.4, where lens A totally fails.
No, it is not right to rate a lens less, just because it offers f1.4 extra, where the other lens stops at f2.
If two lenses perform equally, at the same settings, they should get the same rating. Price gets rated in "Price/Performance".
[/quote]
Exactly my point, Brightcolours. Of course one cannot overlook the problems at f1.4 (mushy corners), however, the Zeiss gives no image at all at f1.4, so it should get a lower rating, shouldn't it? <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='' />
So... we have lens A, B and C doing more or less equally well at f2, f2.8, f4, f8 and so on. Distortion, sharpness, vignetting, bokeh, they are all close.
B and C do more or less equally well at f1.4, where lens A totally fails.
No, it is not right to rate a lens less, just because it offers f1.4 extra, where the other lens stops at f2.
If two lenses perform equally, at the same settings, they should get the same rating. Price gets rated in "Price/Performance".
[/quote]
Exactly my point, Brightcolours. Of course one cannot overlook the problems at f1.4 (mushy corners), however, the Zeiss gives no image at all at f1.4, so it should get a lower rating, shouldn't it? <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='' />