Re: Infrared filter inside Hasselblad

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

At 9:50 pm -0500 20/1/00, PeteScherm@xxxxxxx wrote:

>I'll have to do some archive searching, but I have always thought that such a
>solution would be next to impossible.  The best location would be on the
>front face of the back, but it seems that the "concentric" square
>light-trapping grooves would preclude putting a filter there.  Inside the
>back, behind the darkslide, seems difficult also.  In the body, in front of
>the rear shutter would seem to be a dangerous place for anything.  Is there a
>way to do it?  (I know, I know, I will do the searching in the
>archives.....tomorrow).
>
>Pete Schermerhorn, in the glorious Berkshire hills of western Massachusetts


Pete,

Same problem with the Bronica S series and probably the EC also.  The space
between the darkslide and film plane is too narrow for safe installation of
a polyester filter.  The concentric squares need to bed correctly for the
back locking mechanism to operate correctly and of course for light
tightness.

My early attempts to modify a back to take a polyester filter resulted in
light leaks around the darkslide area.

There is so little room between the shutter and the rear of the body that
playing around in that area would as you say invite disaster....

The Bronnie does have an occasional IR outing with a Cokin "P" filter
holder attached.  Simply raising and lowering the filter in the holder does
the job for me.


All the best,

             Clive   http://www.cocam.co.uk
                     Photographic Services, Filters and Equipment, Infrared FAQ
                            http://clive.bel-epa.com
                            Adventures in Cyberspace - Digital Art and Photos


*
****
*******
******************************************************
*  To remove yourself from this list, send:          *
*         UNSUBSCRIBE INFRARED                       *
*       to                                           *
*         MAJORDOMO@xxxxx                            *
*----------------------------------------------------*
*   For the IR-FAQ, IR-Gallery and heaps of links:   *
*  http://www.a1.nl/phomepag/markerink/mainpage.htm  *
******************************************************