- Joined
- Jan 14, 2012
- Messages
- 52
- Format
- 35mm
Flashbulbs are the only way to do flash in combination with the focal-plane shutter. The FP shutter will not sync with an electronic flash. QUOTE]
Is that only applicable to the Speed Graphic? Other FP cameras such as SLRs sync but at relatively slow speed. Usually 1/60th but 1/125th applies to many and some Nikons as I understand it sync at 1/250th
What is different in the Speed Graphic's FP?
pentaxuser
Flashbulbs are the only way to do flash in combination with the focal-plane shutter. The FP shutter will not sync with an electronic flash. QUOTE]
Is that only applicable to the Speed Graphic? Other FP cameras such as SLRs sync but at relatively slow speed. Usually 1/60th but 1/125th applies to many and some Nikons as I understand it sync at 1/250th
What is different in the Speed Graphic's FP?
pentaxuser
The Speed shutter was only fully open at B. Every other speed was another slit size that traveled across the film. On a 35 there is only the opening and closing shutter that followed behind it. On a Speed, the shutter was a very long piece of fabric with several slit openings in it, in relation to how far you turned the winding key. Only on B was the both open at the same time.
Uh... I dunno what to say. I guess "holy shit" will suffice.I have enough flashbulbs to last the rest of my life. Roughly 3,000 or so. Mostly edison base, with about 500-600 Press 25's & 5B's And 2 unopened cases of Bantaom 8's. I used about 100 or so a year, mostly when I want to try something different or have a style I want to mimic.
I have 4 more tupperware cases filled with bulbs.
View attachment 63563
I have 4 more tupperware cases filled with bulbs.
I used flash bulbs and electronic flash with Speed Graphics in the 1950s and early 1960s . I don't know of any resaon to use flash bulbs but this is just one person's humbug opinion.
However, I did acquire a stock of bulbs over the last couple of years. I like using them with my press cameras. Somehow a modern strobe just does not seem fitting.
I've also found that when shooting people, they get quite a kick out of it.
For me, I enjoy it as part of the process.
I am confused again. I've had a reply from an APUGer( Henry Finley) telling me why you can't electronic flash with Speeds other than on the B setting and yet you have managed it.The Speed shutter was only fully open at B. Every other speed was another slit size that traveled across the film. On a 35 there is only the opening and closing shutter that followed behind it. On a Speed, the shutter was a very long piece of fabric with several slit openings in it, in relation to how far you turned the winding key. Only on B was the both open at the same time.
Were there Speeds that were usable with electronic flash. There must be a difference between what Henry Finley is referring to and what you are referring to.
Is there a simple explanation that reconciles what seem to be irreconcilable statements? The only one I can think of is that you did it on the B setting but this would seem to pose great if not impossible difficulties unless the scene was pitch black and the only illumination was the flash so opening to B and shutting it again resulted in no other light reaching the film
Thanks
pentaxuser
Flashbulbs are the only way to do flash in combination with the focal-plane shutter. The FP shutter will not sync with an electronic flash.
There are flashbulbs available which are more powerful than electronic flash, also. (in case you need extreme amounts of light).
Interesting, I didn't know the Speed Graphic didn't have an equivalent to the 35mm world's SLR flash sync speed, like 60, where the first curtain opens, syncs and then second curtain closes...
Lens shutters would solve that problem, certainly.
Flash bulbs meant for focal plane shutters had a longer burn time to accommodate the moving slit. Electronic flash cannot do this, AFAIK. I think the bulbs were labeled FP or something similar.
I understand FP to stand for focal plane. However, regarding X-sync- I have several cameras with separate sockets for X sync and FP sync.If I remember correctly, FP bulbs were bayonet-base, gas filled fast peak bulbs designed to be used with X sync at faster shutter speeds. Regular flash bulbs didn't work well at high shutter speeds because you only got to use a small part of the burn (and thus got a low guide number).
There were long peak bulbs designed for focal plane shutters; I think they were all screw-base.
Flashbulbs were/are often used in large reflectors. And they put out a deliciously large amount of light.
Electronic flashes are often designed to be as small as possible. That means smaller amounts of light pumped into smallish reflectors.
The size and the shape of the reflectors and the quantity of light emitted by the source makes a big difference on how the photos appear.
Flashbulbs in a large reflector
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?