[LargeFormat] Re: may or may not develop

[Jim Hemenway]

Thanks Richard:

I've found by using a flashlight in the way that you suggested that two
of the older holders have light trap leaks on one side... don't know why
I didn't think of that method myself.

On both of those holders, the wooden piece above the traps is bowed, I
can clearly see light coming in, especially in the middle.

I'm going to also try your other suggestions when I have some time later
this weekend.

Thanks again,
-- 

Jim - http://www.hemenway.com


> >
>    This sort of leak is fairly common. Its probably from
> worn light traps. Most film traps have spring fingers which
> press together velvet or some similar material against the
> dark slide or against each other when the slide is removed.
>    Two method of checking. First, take the dark slides out.
> Open the loading flap and look into the film holder while
> illuminating the end with a flashlight.
>    Other kinds of leaks can be found by putting the holder
> into a camera with the lens board removed so you can look
> inside. Shine a strong light around the holder from all
> angles. It helps of you put a sheet of white paper in the
> holder. Sometimes leaks show up better if you use the same
> setup with the light inside the camera and look at it in a
> darkened room. This will also show up any leaks in the
> bellows or bellows fittings.
> Alan Brubaker repairs film holders and builds new ones. You
> might want to check with him.
> 
> awbent@filmholders.com
> http://www.filmholders.com/
> AWB Enterprises
> 33320 Gafford Road
> Wildomar, California 92595
> Tel/Fax: (909) 674-0466
> 
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@ix.netcom.com
> 
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