Hi Iwert,
Look here:
http://www.pinhole.cz/en/pinholedesigner/
this is a small freeware program, that calculates the optimal pinhole
parameters and some additional information.
I have used a simple approach with some aluminum foil wrapped over a T2
- adapter , hole pinched with a needle...I hve to find the pic, but it
worked ok with auto exposure with my OM2
An offset of the hole will have the shift effect, but the vignetting
will be uneven: just draw a rectangular pyramid with 24 by 36 mm base
and your focal length as the height, shift the top and calculate the
sides. Taking into account the rules (square of distance), you will find
that of course vignetting will be worse with short focal distance and
will be uneven when shifted.
By the way, there are many pinhole sites on the net...
Regards Rainer
----- Original Message -----
From: iwert <iwert@xxxxxxxxxxxxx>
Date: Wednesday, December 15, 2004 9:58 pm
Subject: [OM] Pinhole project part II
> I just "created" my personal
>
> Olympus OM-system metal pinhole cap 0.2mm 1:256 (serial 100001:)
>
> This was the fun part collecting all the bits and making something
> nice.Just tried it on a "still life with lamp" with an 800 asa
> body and automatic
> exposure took only about 15 seconds, feels reasonable. Will be
> trying some
> more the coming days!
>
> part III should show some results.
>
> Iwert
>
> ps: what would happen when I put the pinhole off center - the same
> as with a
> shift lens?
>
>
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