02-24-2011, 06:42 PM
[quote name='Brightcolours' timestamp='1298568993' post='6325']
Like... smooth bokeh? Low CA? Or?
[/quote]
Heavy Coma. Maybe. At least that is what we currently suspect it is.
Nothing unusual with fast lenses, but the degree here is quite a bit disturbing. And completely ruins the MTF results at the border and corner spots until around f/5.6
I contacted Sigma Germany about this issue yesterday, but haven't heard back, yet.
Apart from this issue, the 85/1.4 seems to be one heck of a lens.
-- Markus
Like... smooth bokeh? Low CA? Or?
[/quote]
Heavy Coma. Maybe. At least that is what we currently suspect it is.
Nothing unusual with fast lenses, but the degree here is quite a bit disturbing. And completely ruins the MTF results at the border and corner spots until around f/5.6
I contacted Sigma Germany about this issue yesterday, but haven't heard back, yet.
Apart from this issue, the 85/1.4 seems to be one heck of a lens.
-- Markus
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