Rob,
> Actually, the Olympus stuff does know what lens is on the camera and
> can be set to compensate.
Is that only for Olympus brand lenses or does it apply to third party lenses
like Sigmas and the like?
> -----Original Message-----
> From: filmscanners_owner@halftone.co.uk
> [mailto:filmscanners_owner@halftone.co.uk] On Behalf Of R. Jackson
> Sent: Thursday, July 05, 2007 3:40 PM
> To: laurie@advancenet.net
> Subject: [filmscanners] Re: film and scanning vs digital photography
>
>
> On Jul 5, 2007, at 1:11 PM, Laurie wrote:
>
> > While Digital SLRs might "know" or identify the lens focal length,
> > aperture
> > setting, focus, etc., It cannot identify the glass that is used in
> > any given
> > lens or the optical properties specific to that particular lens.
> > Since most
> > DSLRs allow for interchangeable lenses and lenses made by varying
> > manufacturers, it is probably not reasonable to expect the camera
> > to be able
> > to compensate except in a generalized way for light fall off
> > produced by any
> > particular lens.
>
> Actually, the Olympus stuff does know what lens is on the camera and
> can be set to compensate. I used to have an E-1. I don't know how
> "smart" the lenses are, but I know that sometimes I'd get
> notifications from the Olympus studio software that one of my lenses
> had a new firmware update available, so apparently the lenses had
> more than just an ID residing in their circuitry. I personally never
> used the "Shading Compensation" because the E-1 was slow enough
> already. When DP Review tested the E-1 they got these write timing
> numbers:
>
>
>
> 2560 x 1920 SHQ with no filter 2.0 sec
> 2560 x 1920 SHQ Lens Shading compensation 18.9 sec
>
> Nearly ten times slower write speeds using lens shading compensation
> was enough to scare me away from it for keeps. Interesting idea,
> though.
>
> -Rob
>
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