Comments on: Catching up http://guytal.com/wordpress/2008/09/catching-up/ Photography and the Creative Life Wed, 16 May 2012 23:44:28 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Guy Tal http://guytal.com/wordpress/2008/09/catching-up/comment-page-1/#comment-170 Guy Tal Thu, 18 Sep 2008 12:07:06 +0000 http://guytal.com/wordpress/?p=45#comment-170 John, stopping down increases the usable size of the image circle (i.e. reduces light falloff and vignetting) and may help with this particular lens. Though one should be careful not to go too far on the aperture scale where diffraction may become a problem. If you're seeing vignetting with a lens designed to cover a given format, it's sad to say but you should complain to the manufacturer who didn't design it to produce a large enough image circle. I used the older 80-200/2.8 Nikon models, as well as the Canon 70-200/2.8 and 70-200/4 which do not exhibit this problem. Guy John, stopping down increases the usable size of the image circle (i.e. reduces light falloff and vignetting) and may help with this particular lens. Though one should be careful not to go too far on the aperture scale where diffraction may become a problem.
If you’re seeing vignetting with a lens designed to cover a given format, it’s sad to say but you should complain to the manufacturer who didn’t design it to produce a large enough image circle. I used the older 80-200/2.8 Nikon models, as well as the Canon 70-200/2.8 and 70-200/4 which do not exhibit this problem.

Guy

]]> By: John Christopher http://guytal.com/wordpress/2008/09/catching-up/comment-page-1/#comment-169 John Christopher Thu, 18 Sep 2008 02:53:28 +0000 http://guytal.com/wordpress/?p=45#comment-169 I take it you made it back OK (?) I've been thinking about your "Long Lens Landscapes" article in connection with the new Nikon FX format and the demands it makes of traditional 'full-frame' lenses like the venerable 70-200/2.8 VR. Vignetting can be corrected but the edge softness is something to carefully consider when using it as a landscape lens. (Not an issue in most common 'telephoto' uses.) I take it you made it back OK (?) I’ve been thinking about your “Long Lens Landscapes” article in connection with the new Nikon FX format and the demands it makes of traditional ‘full-frame’ lenses like the venerable 70-200/2.8 VR. Vignetting can be corrected but the edge softness is something to carefully consider when using it as a landscape lens. (Not an issue in most common ‘telephoto’ uses.)

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