Re: PHOTO-3D digest 1366

[P3D Ronald J Beck 840196 <rbeck@xxxxxxxxxxxxxxxxxx>]

In regular SLRs (well, in both of mine anyway), the strobe is synched with 
1/60 speed.  Thus, even though the strobe will fire at faster shutter 
speeds, the light from the strobe will not fully illuminate the target 
while the shutter is open. 

The results of this are areas of a properly exposed subject with poor 
exposure elsewhere in the photo, usually in a streak across the photo.

Now, none of this is true if your shutter is circular like my dad's old 
range finder instead of a "curtain" as my 20 year old Rollei sl35 is.  
However, if you're getting oddly exposed images while using a strobe, you 
may have a shutter speed/strobe synch problem.

Naturally, if I had a Realist I'd investigate this further.  Unfortunately 
I wasn't quick enough during Dr T's net sale to get one :-(

Regards,
Ron

photo-3d@xxxxxxxxxxxxxxx said:
> Greg Wageman writes: >Someone will surely correct me if I'm wrong, 
> but I don't think an >unmodified Realist has X-sync (electronic) 
> flash timing.

> The Realist is X-sync meaning that the shutter is fully open when the 
> electronic  flash fires and as George says "set it at any darn speed 
> you like." Now a bulb setting is entirely different. In a bulb 
> setting the shutter is only  partially open when the bulb begins its 
> burn to climax. If timed correctly the  shutter and bulb achieve 
> climax at the exact the same moment and it is a totally  satisfying 
> experience for both the film and the photographer. Tanker

> 



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