[rollei_list] Re: Flashbulbs

At 03:08 PM 5/31/2005, John Jensen you wrote:
>My vague recollection is that M is 15-20 milliseconds
>delay, F about 5 milliseconds, and X zero
>milliseconds.
>
>The purpose of the F bulbs was for a short lighting
>time for action shots (not as quick as an electronic
>flash, however).
>
>John
Yup, those numbers do sound right when I think back.  Now about everything 
but the M2 bulbs I use underwater is set for X.

My recollection is that what you refer to as "delay" was the delay allowed 
for the bulbs, and would actually be an advance contact trigger time before 
full shutter opening.

What I don't recall is what designation was used for bulbs used for 
focal-plane shutters.  Of course now most focal plane shutters can use just 
about any bulb at 1/30 or 1/60 sec, some even shorter exposures.

DAW

(I'm supposed to be working today but decided to sort of unwind from the 
past few days- I work at home anyhow)


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