T3D Re: 5P Mask dimensions

[Steve Berezin <sbere@xxxxxxxxxxxxx>]

Stereoptician wrote:

> 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?]
>

What about the position of the aperture in relationship to the side and bottom
of the mount.  That would be quite important.

> 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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