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| creators |
Half the image missing using remote flash.Does anyone know what might be causing this problem, it's happened with my studio flash and a remote flash unit, but does not happen using the on board flash?
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| Evolution104 |
I used to see this with film and my OM-1.
It was caused by a too short shutter speed, or a delay in the flash going off. What this looks like to me is that the mirror in front of your sensor is either opening or closing when the flash goes off. I think it's a synchronization problem. But I could be wrong... |
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| creators |
That would make some sense, as it's worse at low f-stop numbers. I've written to Nikon as well, but wondered if it was a known problem that others here had come across. Heaven only knows what to do about it if it is synchronization because it ruined a whole studio session the other day. |
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| Evolution104 |
If the mirror is closing, that would indicate a too short shutter time for the flash.
Try a longer shutter time and compensate for the exposure. If you're at wide open aperture settings because you want the dof, try using a 1- or 2-stop ND filter so you can lengthen the shutter speed. |
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| creators |
You've cracked it. Anything over 1/250 and the shutter starts to intrude.
1/350th. 
1/250th. 
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| adam |
i see....thats why my canon only lets me go to 1/200 when i have the onboard flash up!!!!
makes sense!!! |
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| creators |
Mine to, but with a remote, no such limitation. |
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| creators |
I have discovered that the D70 was designed to under expose so never met this problem, in fact studio work was a nightmare trying to get enough light in without resorting to stupidly low shutter speeds which were hopeless for portraits, and one of the things I am having to learn with the D80 is that it definitely doesn't. | ||
| jonH |
it's all about the sync speed, babyThe D70 is awesome for flash - max sync speed of 1/500 - it's not only a class leader, it beats just about any dslr out there in this respect. (it's due to it having a combination of mechanical and electronic shutter)you'll probably find your D80 has a max sync speed of 1/250 http://www.kenrockwell.com/tech/syncspeed.htm |
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| creators |
Having now checked it out, t'would seem the D80 has a flash sync of 1/200, not withstanding the faster synch speed of the D70, the under exposure was still a problem that endlessly niggled. I might dig it out again and do a few comparison shots. | ||