Hey guys
I got some extension tubes and took this pic....
is this good for a macro shot or are extension tubes rubbish?
their is lots of CA on the sides of the picture
thanks!
porky101 Senior Member 609 posts Likes: 1 Joined Jan 2011 More info | Jan 28, 2012 10:48 | #1 Hey guys
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Jan 28, 2012 11:41 | #2 Extension tubes generally won't affect your image quality (other than adding magnification) because there's no glass in them. The CA would be coming from your lens, not the tubes. Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.
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gmillerf Member 117 posts Joined Jan 2012 More info | Jan 28, 2012 13:48 | #3 Extension tubes don't inherently reduce the quality of the lens, but they can take them beyond the magnification they were designed for and expose "defects" not visible at lower magnifications. CA generally gets worse with magnification, so that's probably what's going on here, and I've seen it when I've done the same with some of my lenses. Greg -- http://www.flickr.com/photos/79652823@N00/
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Buck_68 Member 44 posts Joined Oct 2009 Location: Yorkshire, England More info | Jan 29, 2012 12:58 | #4 I've just got a set of extension tubes and had a play last week to see what I could do - looks like its going to be a learnign curve for me but will be a good introduction and if I like it I can always go and get a true macro lens
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