DPReview.com is closing April 10th - Find out more

Consensus on 24-70/2.8 II field curvature at infinity focus?

Started Sep 14, 2013 | Discussions thread
andrewD2
andrewD2 Veteran Member • Posts: 9,506
Re: Much ado about nothing

Crop across the center of the frame, f6.3, 50mm, 1/250s

http://www.photoluminaire.co.uk/posted/6B9C4296.jpg

Center is sharp, either side parallel to the sensor is very poor. f8 won't fix it.

24mm @ f8 is going to be great. Better than 17-40L, better than 24L mkI. I know of nothing with less CA at 24mm and it has less CA than the 35L.

Given its not as perfect as some reviews (shooting test charts at 2m away) would suggest and that you can get three good lenses to cover the range for less money and the same weight off the camera. As a PJ lens its great, sharp wide scene setters and nice smooth bokeh at 70mm with a sharp center. That is what is seems to have been designed for.

I had gigabytes of tests vs the old 24-70L, deleted them when I sold the old and decided to keep the new one. They clearly showed the new one was sharper in the center, had much less CA at all focal lengths and had forward field curvature at mid distances. The old 24-70 showed field curvature the other way, not useful for sharp near field corner sharpness.

Andrew

Post (hide subjects) Posted by
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow