Digital BW, The Print

pr_roark wrote:

> On the other hand, I wonder if some of the color fringing at the 
> edges is due to sensor design as well as lens aberrations.  I don't 
> recall the color fringing being such a big deal with film.  The Canon 
> 90 TS is the only lens I have that doesn't show that annoying defect 
> on both the Photozone tests and mine.  If fringing -- particularly 
> with wide angle lenses -- is, in part, a camera defect, they we might 
> have some changes that alter relative lens performance.

And I thought for some time that as color fringing can be 
removed with software the lens designers compromise it more 
in order to get other specs in line. Tokina for example in 
its recent designs as tested by Photozone. An interesting 
comment in the conclusion of DPreviews test report of the 
Fuji S100FS:

"There is a cloud on the horizon, though, and its a cloud 
with oddly-colored edges. Chromatic aberration (CA) is a 
major problem at the focal lengths that are likely to be 
most used. The effect is so pronounced at times that it is 
visible even in small prints. The frustrating thing is that 
CA can be removed automatically - we've seen it done in 
other long-zoom cameras, so know it's possible, 
economically. It can also be manually removed from RAW files 
but the supplied FinePix Studio software doesn't provide the 
tools to do, so again you're pushed towards using 
third-party software that don't do the images justice."

If reviewers accept that approach then it is likely to 
become the standard.


-- 
Met vriendelijke groeten,  Ernst


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