At 03:39 PM 5/31/2005, Jerry wrote: >Don, > >No, The FP type bulbs were designed to be used with >the FP shutters of the Speed Graphics which had a longer >travel time. They were NOT designed for modern 35mm >FP shutters which only synchronize at 1/60 t0 1/125 sec. > >My old Leica IIIf used FP bulbs at higher speeds with a >CHICO flash. > >Jerry . Jerry, I didn't mention FP bulbs, just said I didn't remember what the designation was for bulbs designed for focal plane shutters. DAW >Don Williams wrote: > > > 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) > > > > --- > > Rollei List > > > > - Post to rollei_list@xxxxxxxxxxxxx > > > > - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' > > in the subject field OR by logging into www.freelists.org > > > > - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with > > 'unsubscribe' in the subject field OR by logging into www.freelists.org > > > > - Online, searchable archives are available at > > //www.freelists.org/archives/rollei_list > >--- >Rollei List > >- Post to rollei_list@xxxxxxxxxxxxx > >- Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' >in the subject field OR by logging into www.freelists.org > >- Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with >'unsubscribe' in the subject field OR by logging into www.freelists.org > >- Online, searchable archives are available at >//www.freelists.org/archives/rollei_list Don Williams La Jolla, CA --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list