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Re: [OM] T32 zoom adapter

Subject: Re: [OM] T32 zoom adapter
From: "Hans van Veluwen" <mail@xxxxxxxxxxxxxxxx>
Date: Sat, 1 Apr 2000 14:25:52 +0200
: Even if it should increase the GN from 32 to 45 and it is a pretty object,
: it seems to me of no effect on the exposure!
: I tested it with my OM2n in TTL mode with different zuiko lenses on  at
: different ranges (3-6 mts).
: Looking at the correct exposure LED in the camera finder and closing the
: diaphragm stop by stop, I realized no differences from the T32 alone  or
: with the adapter at the maximum extension.,  also inserting aluminium
: kitchen paper in the body instead of the film.

Aluminium doesn't sound like a proper test material. Better stick to film,
or use a grey piece of paper.
Anyway, the Zoom adapter increases the GN from 32m. to 42m. (not 45) at 100
ASA. Using the 135mm/F2.8 at F2.8, this should increase the flash range from
11m. to 15m. at 100 ASA, which really is not a dramatic difference. However
if you switch to 400 ASA film the differences should become very obvious, as
the flash range is increased from 22m. to 30m.


hnz


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