On Thu, 18 Jan 2001, Bradley Small wrote:
> Yep! That is the one I saw. Looks pretty straight forward.
>
> I guess the clarification comes from never having used one. Is ther a
> curve or somethiing so that you slip the holder in and it displaces
> the screen, or do you pull back the glass and drop it in, or remove
> the gg holder and place the holder inside.
>
> If it uses srpings,what kind and how are they incorporated?
>
> How have people here handled the problem of rotating the back for
> vert. vs horiz.?
Yeah, I remember these questions when I first got started. Your best bet
is to find a camera to look at. It is much simpler than it sounds when
one tries to describe it. Anyway, here goes my attempt at an explanation.
Perhaps we could put a diagram or picture on the web?
The most "usual" approach is for the ground glass frame to be held against
the camera by some sort of spring mechanism. This can be a piece of
spring steel, piano wire, coiled springs or rubber bands. You focus the
camera on the ground glass, and then pick the ground glass frame up and
slide the film holder in underneath it. The ground glass frame then sits
up on the back side of the film holder and holds everything in place.
The only critical thing is that there is a ridge on the front of the film
holder and you need to put a matching groove in the back frame so that
this ridge falls into the groove when you slide the film holder under the
ground glass. This lets you know when you've got things positioned in the
right place. Take a look at your film holders and see what it takes to
make one lay flat.
The rotation of the back is commonly done by making the rear standard
square. You then simply disconnect the back frame from the rear camera
standard, rotate it 90 degees and put it back on.
Some of the last few messages gave you some pretty good advice - be
creative. The key thing to remember is that the ground glass plane while
focusing and film plane while taking the picture have to coincide.
Beyond that, the camera is pretty much just a box that allows the lens to
be focused.
(If there was only one way to make a camera this list would be pretty
boring.)
- Wayde
([EMAIL PROTECTED])
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