T3D Re: 5P Mask dimensions

[Stereoptician <stereoptician@xxxxxxxxxxxxxxxx>]

Me:

>> Is there a list or table available on-line of the aperture dimensions...

John B.:

> I don't know of one but Alex Klein is the one to ask.  Shall we start one?


Sounds like a good idea to me.  I'm primarily interested in the medium and
close-up mask dimensions right now, but as long as we're doing it we may as
well do all the masks and mounts we can find.  I'll be happy to compile and
repost whatever anybody posts or sends me.

Even if you can't provide dimensions, but know for sure a mount or mask was
made (and what it was called), let me know and I'll put it on the list to
be filled in later.

I propose the following terms and "standards" for the project (comments
welcome):

   F  = "format" (5P, 7P, 8P, MF [do we need 66, 67, etc. for MF?])
   OD = "outer dimension" in mm (41x101 for Realist format)
         (Maybe RF = Realist format and MF = King Inn 80x132 standards?)
   W  = "width" of each aperture
   H  = "height" of each aperture
   S  = "spacing" of the apertures (measured from left edge to left edge)
   SO = "source" (P = published by mfr., M = measured by someone --
         I could code for who measured if anybody cares -- M1, M2, etc.)

So, for example (use a monospaced font such as Courier to view the table):

Mount                    F   OD     W      H     S    SO

RBT Realist Normal      5P   RF   21.5   23.1   61.9   M
RBT Nimslo/Closeup      5P   RF   16     21      ?     P
RBT European            7P   RF   28     23      ?     P
R3D 4722 slip-in        5P   RF   22     23      ?     P

[Do we need tenths in the measurements?]

I know Realist made Normal (2120), Medium (2121), and Close-up (2122)
masks.  Did Emde make a range?  Albion?  Who else?

Comments welcome,

Stereoptician


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