[LargeFormat] inserting the film holder

[philip.lambert]

On a related matter, are all replacement ground-glasses the same
thickness/register?  I fitted a Boss screen from the Netherlands to
my Linhof and it was no trouble at all, brighter and virtually grainless. Is
there an international standard for focussing screens or can you buy glass
of the wrong thickness? That is, if a screen is right for a Wisner is it
right for a Sinar/Cambo/DeVere? Philip

Subject: Re: [LargeFormat] inserting the film holder


>
>
> Diane Maher wrote:
>
> > I've noticed that when I get my film back, some of them are ever so
> > slightly blurry.  I'm assuming that this is due to inserting and
> > removing the film holder.  I think that I've locked all my movable
> > parts, but obviously something is amiss.  Any suggestions?
>
> Diane, I noticed a posting in the forum requesting information on
> thickness and registration of ground glass. Is it posssible that you
> have broken one recently and replaced it with the ground glass facing
> out (ie. wrong way round) or removed it and replaced it back to front?
> The GG may not be seating properly? This might account for the effect
> depending on the depth of focus at the film plane that you are achieving
> adn why some are blurry and not others.
>
> Robert Lawrence
>
>
>
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