[Leica] To Sell or Not to Sell now Canon/Nikon

[kcarney1 at cox.net (Ken Carney)]

Tina,

Thank you.  That was very helpful.  I have been looking at files at 100% and
200% taken with Canon lenses.  So far I have found two that appear to have
the color fringing (green in both cases), only in certain areas of the
image.  I didn't see anything as drastic as the images on the sites you
mentioned.  Maybe I got lucky in my lens selection.  They are the Canon 28mm
2.8, the 50 1.4, the 10-22, the 24-70L and the 70-200 IS L.  I wonder if
this is because I am using a 1.6 sensor (20D and 40D) and not a full-frame
sensor?

Ken

> -----Original Message-----
> From: lug-bounces+kcarney1=cox.net at leica-users.org [mailto:lug-
> bounces+kcarney1=cox.net at leica-users.org] On Behalf Of Tina Manley
> Sent: Tuesday, June 30, 2009 8:55 PM
> To: Leica Users Group
> Subject: Re: [Leica] To Sell or Not to Sell now Canon/Nikon
> 
> At 09:32 PM 6/30/2009, you wrote:
> >Tina,
> >
> >I know nothing about chromatic aberration, color fringing and the like
> for
> >the Canon, even after looking on Google.  I have some Canon L lenses, and
> >the full-frame Canons seem attractive.  Can you point me to some sites or
> >images that would show the effects?  I am interested in things that show
> up
> >on prints, say up to 16x20X.  Thx much.
> >
> >Ken
> 
> Ken - I used to have a gallery up on pbase showing the CA and
> fringing from my Canon lenses when I was trying to find a solution,
> but the solution turned out to be an M8 so I took the photos
> down.  Here are examples I found on Google:
> http://www.usa.canon.com/dlc/controller?act=GetArticleAct&articleID=1486
> http://toothwalker.org/optics/chromatic.html
> http://www.normankoren.com/Tutorials/Chromatic.html
> http://www.bobatkins.com/photography/reviews/tamron_28_75c.html
> 
> All of the examples are with Canon lenses.  The purple or red lines
> on one side of an object with green or blue lines on the other.  I
> saw it all the time in trees in the corners of the
> photos.  Sometimes, as with these examples, it extends pretty far
> into the photo.  The 24/1.4 L lens was also very soft in the corners.
> 
> I examine all of my photos at 100% because stock agencies do.  You
> might never notice the artifacts if you just look at actual size on
> the web, but once I've seen them, I know they are there and look for
> them in every photo.  There are work-arounds to get rid of the
> fringing but every one of them degrades the photo in some way.  I'd
> rather not have it to start with.
> 
> Hope this helps.
> 
> Tina
> 
> Tina Manley
> www.tinamanley.com
> 
> 
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