Here\'s an example of the issue I found with my 24-70mm GM with softness on the right edge of the photo. I tested it against my Sony 16-35 f4, 11-24mm Canon, Batis 25mm, and Sony 70-200 f/4 on a heavy duty tripod with timed release.
Top is a photo of the whole frame taken at 24mm.
Then the 24-70mm at the far right edge at f/2.8 (the rest of the frame is nice and sharp already wide open):
Then the 24-70mm at F/8.
Finally the far right from the Batis 25mm at f/2.8.
One might say, \"of course the Batis is sharper, it\'s a prime and you stopped it down from f/2.\" Yes, however, the 24-70 GM never caught up to the Batis at any aperture, so even at f/8 it is softer than the Batis is at f/2.8.
Again, this is JUST THE RIGHT EDGE in this and other photos. The inconsistency across the frame indicates to me this could be decentering. Hopefully this will not be a widespread problem.
Here\'s an example of the issue I found with my 24-70mm GM with softness on the right edge of the photo. I tested it against my Sony 16-35 f4, 11-24mm Canon, Batis 25mm, and Sony 70-200 f/4 on a heavy duty tripod with timed release. First a photo of the whole frame:
Now the far right at f/2.8 (the rest of the frame is nice and sharp already wide open):
Now the far right from the Batis 25mm at f/2.8:
One might say, \"of course the Batis is sharper, it\'s a prime and you stopped it down from f/2.\" Yes, however, the 24-70 GM never caught up to the Batis at any aperture, so even at f/8 it is softer than the Batis is at f/2.8:
Again, this is just the right edge in this and other photos. The inconsistency across the frame indicates to me this could be decentering. Hopefully this will not be a widespread problem.
Here\'s an example of the issue I found with my 24-70mm GM with softness on the right edge of the photo. I tested it against my Sony 16-35 f4, 11-24mm Canon, Batis 25mm, and Sony 70-200 f/4 on a heavy duty tripod with timed release. First a photo of the whole frame:
One might say, \"of course the Batis is sharper, it\'s a prime and you stopped it down from f/2.\" Yes, however, the 24-70 GM never caught up to the Batis at any aperture, so even at f/8 it is softer than the Batis is at f/2.8:
Again, this is just the right edge in this and other photos. The inconsistency across the frame indicates to me this could be decentering. Hopefully this will not be a widespread problem.
Peter
Apr 03, 2016 at 08:12 PM
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