KKCFamilyman said:
Mt Spokane Photography said:
KKCFamilyman said:
Mt Spokane Photography said:
It sounds like it will be a very good lens. Some are reporting issues at the long end, so I'd check that out.
I'm waiting for the eventual price drop to decide if I'll get one. By then,there will be a lot of feedback from users.
What issues?
Just thought I'd clear things up.
Softness, particularly at the edges and 70mm.
Two pretty respected reviewers have seen this. There have been some that claim to have seen the issue in poosts on this forum, but I tend to look to experienced testers with a good track record of spotting issues.
It is undoubtedly a fantastic lens, and there may be some samples with issues, which is why I'm waiting for more reviews to come in. I've had 5 of the old version and they were not impressive. I have high hopes for this one.
Let us know what you see.
http://www.the-digital-picture.com/Reviews/Canon-EF-24-70mm-f-2.8-L-II-USM-Lens-Review.aspx
http://www.photozone.de/canon_eos_ff/773-canon2470f28mk2ff?start=2
Yeah that sounds the case but I feel it's much better than the 24-105 and if I go professional I could always get another copy later if that's the case. Either way after selling the old lens it cost me an additional $1,400 and I figured I could use it for the holidays so not sure how much waiting I could endure. I hope I made a wise investment. Let me know if you get one. How could I check if my copy was soft?
Just an FYI I compared 4 different copies of the 24-70mm II to the 24-105mm (which is a consistent lens). When averaging the areas where each lens was better or worse overall there was NO difference between the quality of the 24-105mm and the 24-70mm II.
Here's the write up for the comparison:
vs 24-105mm (@ f/4.0)
24mm
Center: Equal
Mid Frame Copy 1: Much Better
Mid Frame Copy 2: Much Better
Edge Copy 1: Much Better
Edge Copy 2: Much Better
28mm
Center: Equal
Mid Frame Copy 1: Much Better
Mid Frame Copy 2: Better
Edge Copy 1: Better
Edge Copy 2: Equal
35mm
Center: Equal
Mid Frame Copy 1: Equal sagittal resolution, better meridonial resolution
Mid Frame Copy 2: Much Worse
Edge Copy 1: Equal
Edge Copy 2: Much Worse
50mm
Center: Equal
Mid Frame Copy 1: Equal
Mid Frame Copy 2: Worse
Edge Copy 1: Much Worse
Edge Copy 2: Much Worse
70mm
Center: Equal
Mid Frame Copy 1: Equal sagittal resolution, better meridonial resolution
Mid Frame Copy 2: Better sagittal resolution, equal meridonial resolution
Edge Copy 1: Better sagittal resolution, equal meridonial resolution
Edge Copy 2: Much Worse
Conclusion:
(formula is +1 per copy that: shows better -1 for worse -1.5 for better +1.5 for much better (+0.5 per partial improvement)
Total score. 0 ZERO between these two copies and the 24-105mm it's equal.
Source of the info:
http://www.the-digital-picture.com/Reviews/Canon-EF-24-70mm-f-2.8-L-II-USM-Lens-Review.aspx
Note on their testing methodology:
The camera/lens is multiple-laser-aligned to the target which is mounted on 60" , 1/2" thick sheet of glass.
Tests are conducted using externally-magnified Live View manual focusing and center-point-only autofocus (initial focus is gained using autofocus and then adjusted manually). The best of the many re-focused shots (typically at least 10 sets - often 15-20) are used for the results for EACH camera/lens/focal-length/aperture combination.
His variances are measured in a few ten thousanths of a degree.
Live view focusing laser aligned cameras and lenses on a target so flat that it needs a 40 lb sheet of glass to keep it level is a pretty serious way of testing that will show few errors, especially when doing 20 repeated trials and refocusing each time. He gets the depth of field within at the least 99% of the sharpest possible setting by my calculations (99.3% to be exact) for an f/1.4 lens. His testing method is so accurate, that the actual thickness of the chart he uses is at the least 14 times greater than the deviation he has from ideal focus for a f/1.4 lens. The tests are done to the accuracy of small fractions of a sheet of paper.
It's also worth mentioning when comparing the 24-105mm to the 24-70mm II that the 24-70mm II is better than it if you get a good copy, but worse if you get a bad copy, so it depends, and this is just speaking with a 4 copy sample which may or may not represent the norm or future improvements in manufacturing tolerances form Canon.