Graflex.org

Murray@uptowngallery.org · Joined: 03 Apr 2002 Posts: 164 Location: Holland MI

eBay 7518176814

Thanks

Murray

t.r.sanford · Posted: Wed Jun 22, 2005 5:18 pm Post subject:

I'd be interested in the answer to this one. Looking at the picture, I can't even tell which way the device goes (he mentions a groundglass, which must be on the underside). Of equal interest would be knowing what it was used for...

Murray@uptowngallery.org · Joined: 03 Apr 2002 Posts: 164 Location: Holland MI

I can vaguely see a bit of ground glass sheen on one side and none on the other...at first I thought I was just seeing a grey painted inside surface.

I'll have it in a day or so & maybe figure it out.

M

Murray@uptowngallery.org · Joined: 03 Apr 2002 Posts: 164 Location: Holland MI

Mamiya Press 23 Focus Screen Holder

Now that I see it has a pedigree I wonder if I would be depriving some needy Mamiya Press 23 owner of this by misusing it for one of my demented projects.

Murray

t.r.sanford · Posted: Fri Jun 24, 2005 3:52 pm Post subject:

Very interesting. I remember that such a thing was made for the Mamiya "Press 23," but I never saw one.

Does it provide for bellows focusing?

Murray@uptowngallery.org · Joined: 03 Apr 2002 Posts: 164 Location: Holland MI

Someone else suggested that on another group site.

I'm not sure I see how it can allow rear movements/bellows focussing. I didn't pay attention whether the Sekor/Seikosha lenses had helicoids to go with their shutters.

My view (I have no 2x3 holders at this time) is that if a filmholder displaces the GG to the rear, the bellows attached to it serves no purpose with a filmholder attached. Maybe it just keeps side light leaks out of the viewing area? Or maybe it just keeps the glass from banging around.

The viewing 'door' can open 90 or 180 degrees (there are 2 selectable 'doorstop' positions).

Murray@uptowngallery.org · Joined: 03 Apr 2002 Posts: 164 Location: Holland MI

A link someone elsewhere referred me to showed this back mounted on another plate which then (optionally, I assume) had a bellows. So there was a rear bellows option. I'm not sure if the Mamiya Press 23 was a bellows RF or a solid body with optional rear bellows.

I just wond a box of 2.25 x 3.25 filmholders on eBay so it appears I can use this back. I might hack a 4x5 Graflok-sized plate to temporarily mount it on my backless 4x5 SG.

Murray

Dan Fromm · Joined: 14 May 2001 Posts: 2133 Location: New Jersey

Murray@uptowngallery.org · Joined: 03 Apr 2002 Posts: 164 Location: Holland MI

Thanks, Dan.