10-03-2012, 05:15 AM
[quote name='popo' timestamp='1349215928' post='20484']
I thought it was stated in the past that the test method takes the best-focus value of the multiple test shots, so wouldn't that negate field curvature?
Following from the EF 24-70 I review:
[/quote]
Oh, yes that's the normal way and this chart will also be part of the review.
However, because of the heavy field curvature I will also include the discussed one to describe the field curvature effect.
The standard MTF chart looks pretty good apart from f/2.8 and f/4 actually.
It's still a rather outdated lens (massive vignetting).
I thought it was stated in the past that the test method takes the best-focus value of the multiple test shots, so wouldn't that negate field curvature?
Following from the EF 24-70 I review:
[/quote]
Oh, yes that's the normal way and this chart will also be part of the review.
However, because of the heavy field curvature I will also include the discussed one to describe the field curvature effect.
The standard MTF chart looks pretty good apart from f/2.8 and f/4 actually.
It's still a rather outdated lens (massive vignetting).