Chromatic Aberration & PF


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Jun 18, 2005
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#1
May I know the difference between CA and PF?
 

ipin

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Nov 21, 2005
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#3
CA comes in different types, green, blue, red and yes, purple too.
PF is the same as CA, just more specific and most common.
In a nutshell, they are the same. Hope this helps ;)
 

Convoy

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Aug 2, 2003
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#4
Strictly speaking, chromatic aberration and purple fringing are not really the same.

Chromatic aberration is caused by the lens not focusing different wavelengths of light at the same position or something like that. One of the symptoms is purple fringing.
http://en.wikipedia.org/wiki/Chromatic_aberration

Purple fringing can be either caused by chromatic aberration or maybe by the sensor.
http://en.wikipedia.org/wiki/Purple_fringing
 

Clown

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Mar 24, 2003
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#5
no difference practically..
both are caused by same shooting conditions and u end up with a screwed up image.
 

Robbo73

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Jul 17, 2006
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#6
Clown said:
no difference practically..
both are caused by same shooting conditions and u end up with a screwed up image.
To be fair, let's agree that the full and complete answer (or a good way towards it) is what we should be passing on as Convoy has, but with a comment that the nett result is indeed "a screwed up image" e.g. "blurriness" in the zoomed out image.

People may well be interested in the technical aspects of these 2 terms which could in turn help to troubleshoot sensor issues instead of blaming the lens (and spending a fortune on Ls/Nikkors...) or the conditions and restricting opportunities to shoot in contrasty situations.

Didn't mean to go on so much - sorry about that :embrass: :D
 

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