Okay, during a shoot today, I had a weird thing happen -- can anyone help me determine what the issue is?
"Weird Images" from my Nikon D300 -- just follow the link.
D300, 17-55, Manual, ISO 400, 5.6 at 250, pocket wizard. Brand new SB900 on a pocket wizard
This seems to me to be a shutter issue and happened intermittently throughout the session. The last image shows that the other images were crisp, not a problem, but periodically throughout the session, images such as 1 - 4 would show up.
I'm pretty sure your shutter is simply hanging up. 1/250th is supposed to be fully open, and clearly it's not. I don't see how this could possibly be the pocket wizard, because even if it were late firing, the amount of light in the exposed part of the frame suggests very strongly that there'd be at least a ghost image.
I'd have a discussion with Nikon immediately about this, as I can't imagine how this would not be covered under warranty as long as the camera hasn't been dropped or otherwise abused.
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!
This is a classic shutter/flash synchronization issue. Both shutter and flash are operating as they should, but the flash is firing when the shutter is not fully open.
Try running the same operation, but use the camera's built-in flash to fire the SB-900 (Custom Settings Menu e3, Commander mode, Built-in flash Mode=M Comp.=1/128, Group A Mode=M Comp.=1/1, Group B Mode=M Comp.=1/2, for example). By using the lowest setting for the built-in flash, you minimize or even eliminate its contribution to the exposure. Sometimes a slightly higher level for the built-in flash is necessary in order for the remote units to be able to "see" it, depending on their positions relative to the camera and the nature of the shooting environment. If the problem does not persist when using this method, then there is something going on with your pocket wizard.
Also, try shooting with the pocket wizard at a shutter speed of 1/125. The problem may simply be that they can't synchronize at 1/250.
>Hi guys! > >Thanks for all of your answers -- all of these things ran >through my head. I'm just now sure how to determine which >issue it really is other than to send it to Nikon. > >Any suggestions on how to test it? > >Thanks, > >Mindy
Mindy, have you tried as i suggested in my origional post?
1. mount the sb900 on camera eliminating the pocket wizard variable. If the problem goes away, its a pw issue.
2. if #1 solves the problem, replace the batteries in the pw's and retest. Also try switching the pw's around. the unit you use as transmitter may be reacting a little slow.
3. if #1 does NOT solve the problem, with the sb900 on camera, try lower shutter speeds to see if the problem dissapears.
4. if possible, try the above combinations on another camera to help confirm or eliminate the problem being an issue with your body only.
5. Try different connecting cords on both flash and camera to pw. though not likely it could be a resistance problem within the cable itself.
Radio remotes are notorious for causing sync problems at high shutter sync speeds when the batteries get low. If the issue is only with the radio remotes attached, change the batteries.
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