I just returned from shooting a bat mitzvah ceremony and dance. I was able 
to put into practice some lessons learned from last week's shoot of a 
school play.

The dance was in a dim hotel ballroom, and I used a Super program filled 
with Portra NC 400 color print film and fitted with my tilt/swivel flash 
unit, a Quantaray QTB 9500A with a Pentax module. This is, or was, Ritz's 
top-of-the-line TTL unit for manual-focus SLRs. About three-quarters 
through the dance, the flash symbol stopped appearing in the Super 
Program's window, and despite all my tinkering I couldn't get the camera to 
recognize the flash.

I've had problems like this before with this flash.  For what it's worth, I 
couldn't get the flash to even fire when off-camera, either. I tried spare 
batteries and a spare module. Nothing seems to work now. Maybe I didn't 
note carefully the AA orientation; it appeared that all four cells should 
go with the positive "button" upward.

When the flash symbol doesn't appear in the Super Program, what is usually 
the cause--low battery voltage? A bad contact in the module? A poor fit to 
the camera?

Another problem: I know I set the flash's ISO to 400. But when I packed 
everything up, the ISO dial was set to 800. Could this be because I briefly 
used a slip-on polyethylene diffuser? Could the diffuser have tugged the 
ISO button to a different setting when I wiggled it on or off? I plan to 
follow the recent advice not to push-process. But I took a good 45 shots 
after the diffuser came off, and just hope they don't end up underexposed.

Paul Franklin Stregevsky
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