Wayne Harridge wrote:
>> Moose <olymoose@xxxxxxxxx> wrote:
>>
>> I suspect the problems of size, weight and
>> cost go up with something like the cube of the film diagonal with
>> pentaprism finders. The penta prism is much bigger and the eyepiece
>> optical system has to cover a much greater area. The eyepieces are
>> probably also slower for size/cost reasons.
> As an example, the eyelevel prism for my Mamiya RB-67 weighs >1kg, what is
> the weight of an OM prism ?
42 grams, but that's naked, with no mount, housing, etc.
Moose
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