RE: Digital slide camera, was Re: off-topic digital camera suggestions

Etienne,

My education happens to be somewhat "vintage." Could you describe some
of these cobbled solutions? I've gotten the use of our schools Canon
20D and am quickly learning how little I really know. Loving the ride
on the learning curve...

-Darryl

-----Original Message-----
From: Etienne Garbaux [mailto:photographeur@softhome.net]
Sent: Mon 12/13/2004 1:54 AM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Digital slide camera, was Re: off-topic digital camera
suggestions
 
Steve wrote:

> I think you may fail to realize the electronic capture and lenses
are
> different that film and the lenses for film are different. The
electronic
> cameras like Nikon, etc. are 'modified' to accept the film designed
lenses.

There's really a lot less to this than some of the manufacturers' hype
might lead one to believe. All decent sensor designs have microlenses
over
the pixel wells, and exhibit angular sensitivities fully compatible
with
the widest of wide angle lenses. Sensors are generally a bit more
reflective than film, so a few badly-designed lenses with concave rear
elements that unfortunately have reflective focal lengths similar to
the
rear-element-to-image-plane distance exhibit ghosting, but they do
this to
a lesser degree with film, too. Other than that, there is no issue.
I've
cobbled all kinds of optical elements, including ultra-wide lenses, to
my
10D and have had not the least hint of any problems. Yes, I realize
that
some manufacturers persist in using sensors without microlens arrays,
but
I'm inclined to think they shouldn't be taken seriously by anyone who
cares
about their images. They're just trying to sleaze by on the cheap.

Best regards,

etienne