On 5/26/2009 7:02 PM Peter spake thus:

On May 17, 5:27 pm, David Nebenzahl wrote:

So now I'm taking the totally empirical approach. The hell with
"standards"[1].

Can anyone who has 5x7 holders out there measure them and give me the
dimensions? I'm looking for the following:

o Total length & width
o Exposure length & width
o Retaining tab location (distance from bottom of holder to top of
retaining rib)
o Distance between bottom of holder and bottom of exposure opening

I'm comparing these to the dimensions I found at
http://home.earthlink.net/~eahoo/page8/filmhold.html.

Many thanks for any who care to respond to this.

[1] Like they say, the nice thing about standards is that there are so
many to choose from!

I have a pot full of 5x7 and 13x18 holders. I have measured a few and
may measure more. I don't have real accurate scales. I can do, by
eye a little better than a 16th, I think.

Older style Linhof 13x18:
Retaining tab location - 7.625"
Thickness - 0.8"
Length - 9.8"
Width - 5.9"
Distance to exposure field - 0.6"
Exposure height - 6.88"
Exposure width - 4.8 or 4.9" depending; the opening for the slide is
wider than the rails for the film.

[snip]

Question: How often does one get exactly what they ask for on Usenet?
Answer: Hardly ever.

All by way of thanking you profusely for posting this information. It's
in my file. I start work on my back forthwith.

By the way, "a little better than a 16th" is exactly the standard of
accuracy I'm going by here, in order to accommodate the obvious
differences between film holder sizes.


--
Found--the gene that causes belief in genetic determinism