Why I wrote so firm about the color fringe issue is I have read lots of test
reports and tested many lenses myself, most if not all color fringe probem
can be reduced/eliminated by stopping down the lens. If you are talking
about one or two pixels color fringe then it could be due to sensor but this
small problem won't bother me, what I don't like is the strong spread of
color (serval pixels) transmitted from the bright area to the dark.
Here is an interesting site that provide ISO12233 chart test results that I
can visual the results myself instead of just looking at the interpreted
data:
http://www.the-digital-picture.com/Reviews/Canon-Lens-Reviews.aspx
C.H.Ling
----- Original Message -----
From: "Moose"
> C.H.Ling wrote:
>> It is NOT true
>
> It is true that both exist.
>
>> , in most cases color fringing is the problem of lens not digital sensor.
>
> Yup, that doesn't mean the other doesn't exist. I've seen examples with
> the same lens on film and Ff digital, with fringing in only the digital
> image. Else Leica and Koduck wouldn't have gone to all that trouble with
> offset sensor site lenses in the M8 sensor.
>
>> Are you telling me that the purple fringe here is due to sensor?
>>
>
> Heavens no. You may recall that I've worked on the CA in that image.
>
> What I AM saying is that posts in this thread have gone back and forth
> talking CA all the time, but referring to things like telecentricity and
> lack thereof and the lens aberration using the same term, "CA". That's
> sloppy and can lead to misunderstanding.
>
> Moose
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