I shot three test rolls, the first two of which came out fine. On the third roll, the first pair came out fine, and then the remaining shots all had a leak, or flare, or some sort of bright and anoying thing in the same postion/side of each pair. (Please see http://www.stuff-by-dave.com/lightleak.html ) Do these white blotches look really familiar to any heidoscop owners?
  The only thing I can think of that changed was that I tried a wider aperature/faster shutter (f9ish, 1/300th) in the second pair, but then went back to a tighther f-stop and slower shutter speed for the remaining shots, and all showed the leak, so did I mess something up that then stayed messed up when I tried the faster shutter speed, or is this an artifact from fumbling to load the film in a semi-shaded spot, that has little to nothing to do with the camera itself? Ideas? Thoughts?

Thanks,
-Dave

Dave,

Those are light leaks coming through your back. This is a very common
problem with Heidoscops with rollfilm adapters, as they were not
really designed for rollfilm like the Rolleidoscop. You'll probably
need to line the edges with black felt,foam, or black wool.

Sam

--- In MF3D-group@yahoogroups.com, "Dave Casey" wrote:
>
> I shot three test rolls, the first two of which came out fine. On
the third
> roll, the first pair came out fine, and then the remaining shots all
had a
> leak, or flare, or some sort of bright and anoying thing in the same
> postion/side of each pair. (Please see
> http://www.stuff-by-dave.com/lightleak.html ) Do these white
blotches look
> really familiar to any heidoscop owners?
> The only thing I can think of that changed was that I tried a wider
> aperature/faster shutter (f9ish, 1/300th) in the second pair, but
then went
> back to a tighther f-stop and slower shutter speed for the remaining
shots,
> and all showed the leak, so did I mess something up that then stayed
messed
> up when I tried the faster shutter speed, or is this an artifact from
> fumbling to load the film in a semi-shaded spot, that has little to
nothing
> to do with the camera itself? Ideas? Thoughts?
>
> Thanks,
> -Dave
>

Dave Casey wrote:

> the remaining shots all had a leak, or flare,
> or some sort of bright and anoying thing in
> the same postion/side of each pair.

Those look like light leaks from the back of
the camera. If it were a major leak, it would
be continuous along the film (from the light
leaking in while you advanced it). As is, it
looks to me like it is leaking in while you have
the film advanced and you're framing you next shot.

I'd suggest laying the film back in the
camera with one of the images lined up
with the film gates. Then look for the
splotch of light film and examine the
camera back at that spot.
________________________________________
John Thurston
Juneau, Alaska
http://stereo.thurstons.us