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Hasselblad Auxiliary shutter question
hi all,
Wanted to but a hassy for the longest time and comparing with the bronica sqb. Got hands on on both bodies, but I realize something different when i realease the shutter. The SBQ releases the shutter in "one sound", as in when i press the shutter, the shutter and closes EVEN IF I still presses on the shutter button. On the other hand, the hassy, release the shutter after i press the button, BUT there is another sound after i let go of the shutter button. people have told me its because the hassy and a auxiliary shutter, and the second sound is the rear curtain coming down My question is, what is the rationale of the hassy shutter system? maybe i am just used to hearing 1 sound from camera for the shutter. IS there a significant difference in the shutters in the SQB and a hassy? Thanks in advance |
#2
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Hasselblad Auxiliary shutter question
"rolento" wrote in message om... [...] My question is, what is the rationale of the hassy shutter system? [...] The second curtain keeps any light that may get around the mirror from fogging the film. |
#3
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Hasselblad Auxiliary shutter question
I guess the rationale for the hassy aux (rear) shutter is both to protect the film from light until the mirror can be moved and viewfinder light blocked etc., and second to provide an auxiliary shutter for other uses the early 500c bodies even had a flash synch PC terminal on the body which was connected so as to trigger the flash when the aux shutter was fully open. So this really is an auxilliary shutter in the original design ;-) Using macro or in a darkened studio (where ghost images would not be an issue), you could use the aux shutter with oddball lenses mounted on bellows or other mountings, even though the lens might lack a leaf shutter. Without this feature, you have to supply a leaf shutter with these bodies, as they otherwise lack a focal plane shutter, yes? ;-) The disadvantage is that you had only a slow shutter speed (like 1/15th to 1/25th second downward) that was hard to control manually. That doesn't matter in a darkened studio using flash lighting, e.g., for macro work, so it was a solution for some types of work... But this speed can easily be extended, using neutral density filters to multiple seconds, which are easy to count. This is great if you want to use your old 500c outdoors with oddball lenses in a bellows adapter etc. provided you aren't shooting moving but static subjects like landscapes. Hasselblad had some machinable metal mount adapters early on for this etc. The feature was dropped from the later production models as not in demand? nowadays, most folks would simply get the focal plane hassy bodies with a full range of speeds and ability to mount odd-ball lenses easily. some related discussion is at http://medfmt.8k.com/mf/budgetblad.html hth bobm -- ************************************************** ********************* * Robert Monaghan POB 752182 Southern Methodist Univ. Dallas Tx 75275 * ********************Standard Disclaimers Apply************************* |
#4
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Hasselblad Auxiliary shutter question
Yes, i understand that. I also know that the Bronica SQB has the 2nd
curtain as well but it covers instantly after exposure is made. Why is it that for the hassy the 2nd curtain only close up after i releases the shutter button? is there some kind of protection rationale in these? or is it just old design? "jjs" wrote in message ... "rolento" wrote in message om... [...] My question is, what is the rationale of the hassy shutter system? [...] The second curtain keeps any light that may get around the mirror from fogging the film. |
#5
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Hasselblad Auxiliary shutter question
"Bob Monaghan" wrote in message ... [...] the early 500c bodies even had a flash synch PC terminal on the body which was connected so as to trigger the flash when the aux shutter was fully open. So this really is an auxilliary shutter in the original design ;-) I can hardly believe I _forgot_ all about that. Been a long time since I cared. I believe Hasselblad also had a flash-powder relay for that synch plug. It was part of a kit that also included ortho and pan cake makeup. (Yes, there was such a thing as orthocake.) |
#6
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Hasselblad Auxiliary shutter question
"rolento" wrote in message om... Yes, i understand that. I also know that the Bronica SQB has the 2nd curtain as well but it covers instantly after exposure is made. Why is it that for the hassy the 2nd curtain only close up after i releases the shutter button? is there some kind of protection rationale in these? or is it just old design? It is an old design. New photographers accustomed to auto-everything might find the 500c awkward. See the following picture from the manual. It's worse than you think. http://wind.winona.edu/~stafford/timecatch.jpg And then there is the famous Hasselblad Lens Jam problem. I got my second 'blad cheap because the owner thought the lens was hopelessly jammed. I fixed it 30 seconds after I handed him the cash. I use it almost exclusively in pre-fire mode: what Hasselblad called "Speed Up Mode". The term still makes me chuckle. All said, I really like the 500c and 500c/m, but I'm accustomed to the model. Best, John |
#7
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Hasselblad Auxiliary shutter question
the early 500c bodies even had a flash synch PC terminal on the body which
was connected so as to trigger the flash when the aux shutter was fully open. So this really is an auxilliary shutter in the original design ;-) I can hardly believe I _forgot_ all about that. Been a long time since I cared. I believe Hasselblad also had a flash-powder relay for that synch plug. It was part of a kit that also included ortho and pan cake makeup. (Yes, there was such a thing as orthocake.) Not only do I have a 500C/M that has that sync connector, but I've also got the little hook that goes in the hole next to the sync connector to hold the PC cable. |
#8
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Hasselblad Auxiliary shutter question
In article ,
Randall Ainsworth wrote: the early 500c bodies even had a flash synch PC terminal on the body which was connected so as to trigger the flash when the aux shutter was fully open. So this really is an auxilliary shutter in the original design ;-) I can hardly believe I _forgot_ all about that. Been a long time since I cared. I believe Hasselblad also had a flash-powder relay for that synch plug. It was part of a kit that also included ortho and pan cake makeup. (Yes, there was such a thing as orthocake.) Not only do I have a 500C/M that has that sync connector, but I've also got the little hook that goes in the hole next to the sync connector to hold the PC cable. Then you also probably have the two small holes, one by the shutter release and the other on the right side that were originally supposed to accept a motor that never came. -- To reply no_ HPMarketing Corp. |
#9
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Hasselblad Auxiliary shutter question
rolento wrote:
Yes, i understand that. I also know that the Bronica SQB has the 2nd curtain as well but it covers instantly after exposure is made. Why is it that for the hassy the 2nd curtain only close up after i releases the shutter button? is there some kind of protection rationale in these? or is it just old design? There is absolutely no link between auxillary shutter and leaf shutter. The release of both is timed and triggered by the mechanism in the camera, but the camera does not know (no mechanical feedback. No electronics, period) when the shutter in the lens has closed again. The simple and robust way to "solve" this problem is by controlling the closing of the auxillary shuter by finger pressu as long as you keep the release depressed, the auxillary shutter stays open. (Important to know, since you can terminate exposure prematurely by letting go of the release button too soon, allowing the auxillary shutter to slam shut before the lens shutter completed the preset exposure. Only can happen using shutterspeeds slower than 1/8). They could have tried to design a mechanical feedback, the shutter in the lens telling the body when the it has closed again, releasing a pal blocking the rear auxillary shutter mechanism. They however haven't done so. I guess it would have complicated the mechanism (making it less robust) without making very much sense, really. |
#10
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Hasselblad Auxiliary shutter question
jjs wrote:
[...] I use it almost exclusively in pre-fire mode: what Hasselblad called "Speed Up Mode". The term still makes me chuckle. Well, it reduces "shutter lag" from approx. 75 ms to about 10 ms... ;-) |
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