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#22
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In a studio, one has control over the lighting. HSS is a trick for use
when you don't. So why does it matter that flash gun tricks don't work with studio lights? Alan Browne wrote: However for use with studio strobes, HSS is useless. |
#23
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In a studio, one has control over the lighting. HSS is a trick for use
when you don't. So why does it matter that flash gun tricks don't work with studio lights? Alan Browne wrote: However for use with studio strobes, HSS is useless. |
#24
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"Alan Browne" wrote in message
.. . Apteryx wrote: "Christoph Breitkopf" wrote in message ... Colin D writes: If so I would guess since the curtain travel is a bit shorter that they could shorten the time... but 1/500 is a real I understand they don't use the focal-plane shutter for the 1/500 sec. shots, but an electronic shutter, like digicams. That's right. With some third party flashes the D70 will even sync at all shutter speeds down to 1/8000. (I've seen this in practice with a Metz flash). Me too (with a tiny and ancient Starblitz). But it does require a Don't-try-this-at-home warning that the manual warns that "Negative voltages or voltages over 250 volts applied to the accessory shoe could not only prevent normal operation, but damage the sync circuitry of the camera or the flash" That's High Speed Sync which is a different beast altogether. I assure you my 20yr old, pocket sized Starblitz does not support High Speed Sync -- Apteryx Treat anger like gold. Spend it wisely or not at all. |
#25
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"Alan Browne" wrote in message
.. . Apteryx wrote: "Christoph Breitkopf" wrote in message ... Colin D writes: If so I would guess since the curtain travel is a bit shorter that they could shorten the time... but 1/500 is a real I understand they don't use the focal-plane shutter for the 1/500 sec. shots, but an electronic shutter, like digicams. That's right. With some third party flashes the D70 will even sync at all shutter speeds down to 1/8000. (I've seen this in practice with a Metz flash). Me too (with a tiny and ancient Starblitz). But it does require a Don't-try-this-at-home warning that the manual warns that "Negative voltages or voltages over 250 volts applied to the accessory shoe could not only prevent normal operation, but damage the sync circuitry of the camera or the flash" That's High Speed Sync which is a different beast altogether. I assure you my 20yr old, pocket sized Starblitz does not support High Speed Sync -- Apteryx Treat anger like gold. Spend it wisely or not at all. |
#26
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Alan Browne writes:
No Alan, it's not HSS. The flashlights mentioned certainly do not support HSS. This is real thing. Of course, you need some experimentation and adjustments to get correct exposures at faster shutter speeds, but this is quickly done with a digital SLR. I'll take your word for it ... however this implies that a "software" shutter is used rather than mechanical (whether or not is is Yes, exactly. The mechanical shutter is basically only used to protect the sensor. It always opens fully. The actual exposure is done with the sensor only, like in compact digtal cameras. And to put a point on it ... I don't see how this would work with studio strobes (except haphazardly). That's the "experimentation and adjustments" thing :-) If the flash duration is longer than the used "shutter" speed, you will get underexposure. Should be easy enough to correct, but then again I don't know anything about studio flashes. Regards, Chris -- Bokeh test images: http://www.bokeh.de/en/bokeh_images.html |
#27
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Alan Browne writes:
No Alan, it's not HSS. The flashlights mentioned certainly do not support HSS. This is real thing. Of course, you need some experimentation and adjustments to get correct exposures at faster shutter speeds, but this is quickly done with a digital SLR. I'll take your word for it ... however this implies that a "software" shutter is used rather than mechanical (whether or not is is Yes, exactly. The mechanical shutter is basically only used to protect the sensor. It always opens fully. The actual exposure is done with the sensor only, like in compact digtal cameras. And to put a point on it ... I don't see how this would work with studio strobes (except haphazardly). That's the "experimentation and adjustments" thing :-) If the flash duration is longer than the used "shutter" speed, you will get underexposure. Should be easy enough to correct, but then again I don't know anything about studio flashes. Regards, Chris -- Bokeh test images: http://www.bokeh.de/en/bokeh_images.html |
#28
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Christoph Breitkopf wrote:
That's the "experimentation and adjustments" thing :-) If the flash duration is longer than the used "shutter" speed, you will get underexposure. Should be easy enough to correct, but then again I don't know anything about studio flashes. Studio strobes discharge in about 0.0001 (or faster) to 0.0015 s. So 1/500 would fit just right. But it's the way the electronic 'gating' of the image takes place that may cause unusual exposure effects. In nay case, thanks to everyone for the replies. Cheers, Alan -- -- rec.photo.equipment.35mm user resource: -- http://www.aliasimages.com/rpe35mmur.htm -- e-meil: there's no such thing as a FreeLunch.-- |
#29
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columbotrek wrote:
In a studio, one has control over the lighting. HSS is a trick for use when you don't. So why does it matter that flash gun tricks don't work with studio lights? Please don't top post. Alan Browne wrote: However for use with studio strobes, HSS is useless. I don't really care that HSS is useless with studio strobes, the whole post is about "what is the deal with the 1/500 sync speed of the D70" My cameras sync at 1/300 and 1/200. Most leaf shuttered lenses sync up to 1/500. I was surprised to see the D70 seemingly have a shutter speed to match a leaf. Given the smaller imaging area, I suppose some shutter speed improvement could be attained... OTOH, the only Nikon that shoots 1/300 sync is the F5. (F6 backs down to 1/250). It turns out that the D70 1/500 sync is sensor based not shutter based. Cheers, Alan -- -- rec.photo.equipment.35mm user resource: -- http://www.aliasimages.com/rpe35mmur.htm -- e-meil: there's no such thing as a FreeLunch.-- |
#30
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columbotrek wrote:
In a studio, one has control over the lighting. HSS is a trick for use when you don't. So why does it matter that flash gun tricks don't work with studio lights? Please don't top post. Alan Browne wrote: However for use with studio strobes, HSS is useless. I don't really care that HSS is useless with studio strobes, the whole post is about "what is the deal with the 1/500 sync speed of the D70" My cameras sync at 1/300 and 1/200. Most leaf shuttered lenses sync up to 1/500. I was surprised to see the D70 seemingly have a shutter speed to match a leaf. Given the smaller imaging area, I suppose some shutter speed improvement could be attained... OTOH, the only Nikon that shoots 1/300 sync is the F5. (F6 backs down to 1/250). It turns out that the D70 1/500 sync is sensor based not shutter based. Cheers, Alan -- -- rec.photo.equipment.35mm user resource: -- http://www.aliasimages.com/rpe35mmur.htm -- e-meil: there's no such thing as a FreeLunch.-- |
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