Archived posting to the Leica Users Group, 2003/08/13
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At 7:46 PM +0100 8/13/03, Frank Dernie wrote:
>There are "reflex" cameras using an electronic viewfinder in place
>of the mirror and ground glass. They are useless for manual focus
>(obviously) but not too bad for normal use, though I wouldn't use
>one again. A digital SLR has all the benefits and disadvantages of
>traditional SLRs and is better for all the purposes I have used for
>the last couple of years.
>I hypothesised about the suitability of adapting an M body for
>digital use because of its removeable door and superb lenses but was
>told that the lenses are unsuited to use on digital sensors because
>of incidence angles at the sensor being higher in these types of
>lenses. This seemed plausible at first (see the Olympus bumf) but,
>on reflection, I am no longer convinced. However the optics are
>arranged the light will have to be focussed on the sensor plane.
>Rays from the periphery of the lens on one side will always
>therefore have to have a considerable incidence to the diametrically
>opposed edge of the sensor. M lenses may be slightly worse than
>reflex lenses (and fast lenses probably more so) but if the EOS 1Ds
>can produce good images from a 24mm f1.4 why couldn't an M with a
>24mm f2.8?
>cheers
>Frank
>ps anyway Leica have already thrown their digital hat into the R
>ring so that is probably that anyway.
Frank,
The exit pupil of the Leica M 24 is about 1/3 the distance from the
film plane compared with that of the Canon 24/1.4. Speed is not a
problem of itself.
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* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:henningw@archiphoto.com
|[ ]| http://www.archiphoto.com
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