[rollei_list] Re: Flashbulbs
- From: Don Williams <dwilli10@xxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Tue, 31 May 2005 15:20:57 -0700
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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