Check out this link on UV filters. After a blurb on UV light and its effects, they test the best and score them according to UV ray reduction. One thing that they don’t test is durability… UV Filter Test
We have been busy adding new images to the stock inventory! Here is a sample of our portfolio:
A great lens, not quite as good as the new Leica 18mm, but much, much cheaper. This test was done on a Sony NEX 5n, so it will not represent true corner performance on a full frame. You can get an ides of the lenses characteristics though. The lens itself is tiny, it weighs 350g and is 71mm long. Distortion is well controlled, you can expect some lateral chromatic aberration in the corners, but it is easily corrected. Specs:
Yep its quite a mouthful, but the Contax 17-35mm N Mount – EOS conversion lens offers very good wide angle performance on the Canon SLR. Its a big lens, that is no lightweight, weighing in at 900g or 2lbs! it requires 95mm filters. Optical performance is very good for a wide angle zoom, it is not perfect, with somewhat softer corners at wide apertures. With one or two exceptions this type of wide angle zoom performancer is the norm for almost all manufacturers. Lets talk about the good, and there is plenty of that Zeiss look! The lens renders with that 3d zeiss look that we all like! It shows great macro contrast, good shadow illumination and reasonable chromatic abberations or CA for short. CA is almost a non event these days, and lightroom deals with very well. Wide open at 17mm you can expect a full stop of fall off (vignetting) this decreases to about 2/3rds of a stop at F8. Fall off at 35mm is less, with about 2/3rds of a stop wide open and a little less than 1/3rd of a stop at F8.
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