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General photography questions and answers: Discuss Fringing...Question arose from test shots with my new Tamron lens. There appears to be fringing such as this on some ...
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Old 15-06-2007, 13:23   #1 (permalink)
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Fringing

Question arose from test shots with my new Tamron lens. There appears to be fringing such as this on some of the photos in (even only a little) contrasty areas:



I've been kindly told this is to do with the sensor not the lens, for which I am grateful, but wanted to know why it hasn't been evident with my other lenses?
Is it due to the 1:1? Or something else?

Thanks I A for the info


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Old 15-06-2007, 13:46   #2 (permalink)
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Re: Fringing

Quote:
There are many technical reasons and some disagreement as to why purple fringing occurs in digital cameras. These factors include the lens, focus, leakage between pixels, and more...
Perceived thinking is that it is mainly the camera/sensor but is generally acknowledged nowadays that there are other factors involved. So, lens might be a factor tho I'd look to the combination of contrast extremes with burned highlights.
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Old 15-06-2007, 14:04   #3 (permalink)
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Re: Fringing

Read: -

Chromatic aberration - PanoTools.org Wiki

and then for a counterpoint.

Chromatic aberrations
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Old 15-06-2007, 17:56   #4 (permalink)
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Re: Fringing

ops., I was posting in the other thread abt this

my personal viewpoint is that it's CA, some lenses will exhibit the effect more than others,. if I have the 90 Di I would run some tests against another lens w/ the same subject and same magnifcation and same EV etc,. that is a simple way to determine that it is indeed CA, or perhaps prove it is sensor blooming

Sil

*Mod Edit* - Just adding in Sil's post from the other thread

Quote:
Originally Posted by silver View Post
some sources of info regards CA Chromatic aberration - Wikipedia, the free encyclopedia

also Chromatic aberrations - this has some resources specifically regards CA versus sensor blooming in the section "lens or sensor" and links to Digital Photography FAQ

I am sure there are also resources with the opposing viewpoint, would be interested in seeing them

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