In a message dated 7/10/2003 1:35:20 PM Eastern Standard Time,
rkm@xxxxxxxxxxxxxxxxxxxx writes:
<snip>
> The only problem I couldn't overcome was getting the CCD to the film
> plane itself - and I certainly wouldn't recommend taking the CCD out of
> the package
What about a fiber optic light pipe, like NPC uses for their Polaroid backs?
<snip>
> Incidentally, I noted the comments Olympus made on the suitability of
> the OM optics for digital cameras and my primary reaction was
> "Baloney!". I have actually built a camera (well two actually) with an
> 18mm f/3.5 Zuiko fitted to a colour CCD and there were no discernable
> colour problems at all. Now this may not be the widest lens in the OM
> group, but it's close. My reason for using the short focal length was
> because the application was for a free-swimming underwater submersible
> for oil pipe inspection. This required stereo vision (hence the two
> cameras) and, being underwater, the effective focal length was
> multiplied by 1.5, roughly the refractive index of sea water - so it
> functioned more like a 28mm f/2.8. Now I have to admit that the
> chromatic impurity issue did concern me before I did this, but since the
> problem didn't arise with that lens, I find it hard to believe that it
> would with any other lenses in the OM range. My conclusion is that
> Olympus are just not interested in maintaining compatibility with legacy
> products when they can sell everyone new lenses. Any story that
> suppresses the demand for such compatibility is worth peddling.
I've read some initial reports from users of the full frame Canon that they
*are* seeing chromatic aberration problems at the corners of the frame with
super wides.
Paul Schings
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