I think the W is actually M so its M and X M stands for
Medium Delay, that is a 20 millisecond delay between the time the
bulb is energized and the time the flash reaches maximum
brilliance. These are the most common flashbulbs, especially the
medium sized ones. X is for stobe. It means the flash is
triggered just as the blades become fully opened. Some shutters
may have a F setting. This is Fast meant for gas filled lamps
that reach full intensity about 5 milliseconds after being
activated. F can be fired using X on many shutters if the shutter
speed is not too fast. There were used for box cameras with very
simple synchronizers. Gas filled lamps have a very short peak and
will provide some degree of motion stopping.
There are also Class S lamps. These are Slow meaning around 50
ms between being fired and peak intensity. They are usually used
for open flash. Another type of bulb is the Class FP, these are
meant for focal plane shutters and have a prolonged peak that is
reasonably flat in output. They work well on 35mm cameras but can
be used with 4x5 press cameras that have focal plane
synchronizers only at the top speed where the curtain motion is
fastest. The falling off of the output is compensated to some
degree by the slowing of the shutter curtain in large press cameras.
I have not looked for adaptor cords for some time. The most
common connectors were the bipost type and the bayonet type.
Kodak used the bayonet type on some shutters and bipost on
others. There were other bayonet connectors of a different size
than the Kodak ones but they are rare. PC connectors came in
later. Many flash guns and strobe units use standard two prong
appliance connectors but they are never found on shutters.
There are charts on the web showing the characteristics of
the popular flash bulbs and the standards for delay times.
On 4/22/2019 6:48 PM, mark@xxxxxxxxxxxxxxxxxx wrote:
I saw some cords that I think will work today, and also bought some cold foot pc adapters so I can use speedlights or any other flash in the field mounted on a tripod or light stand. Won't know if they will work till I see them. One end looks like it will go into the flash socket on the lens, and the other has a mini plug that looks like it will plug into the pocket wizard. Took a minute to figure out that the pocket wizard will mount on top of the camera only one way
I see a switch on the shutter that will allow it to go between W and X. I'm assuming now that X is for strobes and W is for flash bulbs. Am I correct that it should stay on the X for strobes.
Will look for those books. It is starting to get fun again. Each step in the process is teaching me something. Cutting the hole I took the template of the known good lens board and drew the circle of the opening that was too small. Made a couple of lines across it, from 12 to 6 and 9 to 3 most importantly. A couple of more gave me a pretty well defined center. A whack with the punch in the center, the the larger hole saw should have put the hole where it needs to be. De burred and now waiting for the paint to dry, I am hoping that no problems develop moving the lens over. Will find out tomorrow
-------- Original Message --------
Subject: [pure-silver] Re: large format photography books
From: Richard Lahrson <gtripspud@xxxxxxxxx
<mailto:gtripspud@xxxxxxxxx>>
Date: Mon, April 22, 2019 7:11 pm
To: pure-silver@xxxxxxxxxxxxx <mailto:pure-silver@xxxxxxxxxxxxx>
also, the second Adams book 'The Negative' (revised ed.) for
sheet
film processing tips
rich
On Mon, Apr 22, 2019 at 5:06 PM Redacted sender msampson45
for DMARC <dmarc-noreply@xxxxxxxxxxxxx
<mailto:dmarc-noreply@xxxxxxxxxxxxx>> wrote:
I'll second Mr. Kiss' suggestions. I'll also suggest the
book by Steve Simmons, "Using the View Camera" or
something like that. (My copy is long gone.)
As far as flash goes, your lens should have a flash
terminal... regular PC, bi-post, or perhaps the Kodak/ASA
'bayonet' connector. Paramount still sells cords and
adaptors for all of these.
best
Mark
-----Original Message-----
From: mark <mark@xxxxxxxxxxxxxxxxxx
<mailto:mark@xxxxxxxxxxxxxxxxxx>>
To: pure-silver <pure-silver@xxxxxxxxxxxxx
<mailto:pure-silver@xxxxxxxxxxxxx>>
Sent: Mon, Apr 22, 2019 9:20 am
Subject: [pure-silver] large format photography books
Well I got some lens boards made. While I was in the
process, I decided to make four. One I will use now and
three I will stick back for when I add lenses later. Took more grinding than expected, but then again I went
to a guy for some advise on welding once. The advise I
got was to buy a quality grinder. He wasn't wrong.
About to punch the hole in one for the lens, and do a bit
of extra filing. After that its the final coats of paint
and it will be ready for the lens. Step forward
Also stopped through Barnes an Noble this morning. That
has so changed. There was almost nothing there on analog
photography and nothing at all related to large format. I know a lot of this is going to hands on learning, and
there is nothing that can replace time behind ground
glass. I also have already figured out that this could
get expensive if all the learning was done trial and
error. Any recommendations for good books related to
large format photography. I am just about to re read
Ansel Adams, "The Camera" just as a matter of course. Yet going through my mind, I don't remember much if
anything I have that goes into any depth with large
format cameras. A $30 book just might save $300 in film
and a lot of frustration to learn the same things.
The other next step is to find the necessary cables so
the flash can be used. Might have to get a PC to hot
shoe adapter, but will see what is available and what I
can do to get some flexibility on the flash side of things.
Thanks again for the help
Mark
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