[rollei_list] Re: Flashbulbs
- From: Don Williams <dwilli10@xxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Tue, 31 May 2005 15:01:21 -0700
At 12:16 PM 5/31/2005, Richard wrote:
> The GE No.50 and Sylvania No.3 were meant to be used in
>studio reflectors with very slow shutter speeds (1/25th or
>longer) or open flash. A single bulb in a 12" reflector has
>a guide number of 600 for ISO-100 film. Thats f/6 at 100
>feet folks, try that with your stobe units. Remember, these
>are bulbs about the size of 150 Watt household lamp.
Was that the purpose of the "M" flash setting. I had cameras which had "F"
and "M" flash settings.
It seems to me that the "F" wasn't related to focal plane shutters but I'm
not sure. I think it was another flashbulb setting.
I had to grind a new cam to change the "F" setting on an old Argus to make
it "X", which was for strobes.
Anyone have any recollection about this?
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
Other related posts:
