Archived posting to the Leica Users Group, 2000/04/27

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: Re: [Leica] BULBS!
From: "M.E.Berube - GoodPhotos" <>
Date: Thu, 27 Apr 2000 11:59:30 -0400

I hadn't thought of bulbs for fill flash! This would be MUCH easier than 
waiting for Leica to change the shutter or invent a leaf lens! (and be far 
more likely to happen.) I once rigged an Army 4X5 SpeedGraphic for use with 
a Metz 45CT1 (just for fun, it was surplus that everyone had neglected for 
30+ years...but still worked great!) I never thought of reversing the 
process for a modern camera with bulbs.

Thank you for this idea John! know of places online (or 
elsewhere) that an interested party might find more information on how to 
achieve this in practice? I assume one would need a Blub holder. I think I 
actually have Kodak holder for a retina somewhere that I might rig with a 
new synch cord if it's that easy. Will bulbs work with the X synch or hot 
shoe or do I need to have the older M setting/synch port on the body? (ala 
M3) What Bulbs would be best and are they still available? Any info would 
be most gratefully accepted.

Carpe Lumen,
Michael E. Berube

At 11:50 PM 4/26/00 -0600, John Collier illumined us with:
>Any speeds higher than 1/50 require
>the second curtain to be released before the first curtain is fully open and
>thus not allowing the very brief duration of electronic flash to expose the
>full width of the film. You could use flash bulbs of which certain types
>allow a sync speed of up to 1/500 as their burn duration is quite long by
>electronic standards. Another technique is to place the subject in a part of
>image that will be exposed by the flash at higher speeds. Almost half of the
>negative is uncovered at 1/125. Naturally this technique would only lend
>itself to certain types of fill flash use.
>John Collier