Janika Goldmember  1,060 posts Joined Sep 2006 Location: Ontario, CA More info | Mar 06, 2009 21:08 | #1 Is this green line around the edges normal? Just picked up this new lens yesterday. Shot several frames of this bird in strong back light, so I had to over expose a bit. On this, one image I see this green stuff. Still testing the lens, so it may go back. 
Thanx in advance for any help or advise. (John) CANON A590 iS - EOS 50D - EF 400mm f/5.6 L USM - EF 50 f/1.8 II - Tamron 17-50 f/2.8 XR Di II - Velbon Sherpa pro - SIGMA DG500-ST
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sheawyatt Goldmember  1,412 posts Likes: 30 Joined Dec 2005 Location: Victoria, BC More info | Mar 06, 2009 21:14 | #2 I'm sure some of the more technically minded folk will explain it better than me, but I think that is longitudinal chromatic aberration. I get green behind and purple in front fringing the blown out OOF areas with my 300 f/4 too. EOS R5 | RF 15-35 f/2.8 | RF 24-70 f/2.8 | RF 70-200 f/4 | EF 400 f/4 DO II | EF 1.4x III |
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toxic Goldmember 3,498 posts Likes: 2 Joined Nov 2008 Location: California More info | Mar 06, 2009 21:15 | #3 That's chromatic aberration, which happens with high-contrast edges, especially in the conditions you described. It's normal and can be removed relatively easily.
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Mar 06, 2009 21:19 | #4 Yes, and thanks, That's what I figured, as I only saw this issue on one shot (this one) I didn't worry too much about it. (John) CANON A590 iS - EOS 50D - EF 400mm f/5.6 L USM - EF 50 f/1.8 II - Tamron 17-50 f/2.8 XR Di II - Velbon Sherpa pro - SIGMA DG500-ST
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xarqi Cream of the Crop  10,435 posts Likes: 2 Joined Oct 2005 Location: Aotearoa/New Zealand More info | Mar 06, 2009 21:36 | #5 It just isn't ripe yet. Wait a couple of days and it'll turn purple.
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Mar 06, 2009 22:19 | #6 Ok (John) CANON A590 iS - EOS 50D - EF 400mm f/5.6 L USM - EF 50 f/1.8 II - Tamron 17-50 f/2.8 XR Di II - Velbon Sherpa pro - SIGMA DG500-ST
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