Re: [photo-3d] ProviaF100 pushed for Nimslo use

[Cliff Howard <Cliff.Howard@xxxxxxxxxxxxxxxx>]

Jim Harp wrote:
> 
> Two Nimslo shots that I took indoors using the "Opti-lite" flash
> were a tad over-exposed.
> I'd like to find a way to slightly reduce the output of the flash.
> I'm considering wrapping a cloth napkin around it or using black
> masking tape over a portion of the flash.
> Any suggestions?  Jim Harp

If you block part of the flash tube, the sensor circuit
will measure less reflected light and increase the time
that the flash fires. Your indoor slides will still be
overexposed.

Try setting the flash at ASA400.
This will reduce the output by 2 f-stops.
Then cover the flash sensor with a neutral density filter
to increase the output again.

Cliff Howard