Re: Adjusting older cameras to focus IR

[Dwight Shackelford <bubbha@xxxxxxxxxx>]

Willem-Jan Markerink wrote:
> 
> On 21 Apr 97 at 16:34, Dwight Shackelford wrote:

> 
> 1/4% of focal length as a rule of thumb, and you need to focus
> closer, away from infinity.
> I recently obtained a Speed Graphic 4x5 with a good working focal plane
> shutter, but without back panel nor lens. I intended to hack it to
> accept extreme wide angles (up to medium format fisheyes, transformed
> into circular fisheyes on 4x5"), but other than the missing back
> panel, it looks to darn nice to hack the bed.
> If anyone has a 4x5" Graflock back panel gathering dust on his/her
> shelf, or a broken parts donor camera (don't need bellows nor bed,
> only a good working focal plane shutter and back), I will give it a good
> home....;-))
> 

On mine, the Crown Graphic, the bed will lower.  There are two metal
brackets that hold the bed.  They are pivoted on the sides of the bed
and the other ends run in slots in the camera body.  If you push back,
towards the back of the camera, on the top of the two brackets, and then
the bed will lower, but maybe still not enough.  I think I get a drop of
2-3 inches, probably closer to 2.  Again, this is for a Crown Graphic,
but I bet it will work on yours.


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