Vinman

I have an Impact 3 / 500Watt studio system. It came with a transmitter that mounts on the Nikon D750 hotshoe. When I mount it on the camera it only works when I set the camera to Auto mode. It also triggers in test mode.
When I switch to manual mode nothing happens when I take a shot. I have a light meter and I would like to set my camera settings myself.
Any ideas. Is it a special camera setting, flash mode or what.
Very frustrated here. Can anyone help?

burkphoto Loc: High Point, NC

Check for a menu setting that switches between built-in flash and external flash. If your camera has a built-in strobe, it should be there.

You should be sure that sync voltage does not exceed 12 volts...

Apaflo Loc: Anchorage, Alaska

The Nikon D750 is rated at least to 250 VDC on the trigger contacts.

Rick36203 Loc: Northeast Alabama

Is it not firing in manual mode, or does it not affect your image in manual mode? If the latter, be sure your shutter speed is 1/200 sec or slower when using the strobe.

If custom menu e1 is "not" set to an auto fp mode, the camera should not allow the user to exceed 1/200 when it detects an active device in the hot shoe (or the pop-up is raised).

PalePictures Loc: Traveling

That's what I would do. I believe Nikon sync speed for the camera is 1/250.
I usually shoot studio at 1/125 shutter. Keep in mind that most studio work is not ambient dependent. You can shoot at any shutter speed such that ambient light does not come into play. 1/60 -1/30 would also work. The flash will freeze the subject such that there will be no blur.
If you take a test photo without the flash and the image is black you will be safe at that shutter.
Sometimes you may want to capture a subject where you bring a non solid background into play. In those cases shutter may be more important.
Most professional portrait photographers I know will shoot a test shot to get the exposure of a background and then move the subject into frame and meter for flash only.

Theoretically the camera should fire at higher shutters than 250 but it will still cause banding. Not sure if your camera has a check built in. There are ways to get around this. Depending on your flash this can get pretty complex and is not conventional.

See section four of this link for menu settings on your camera and where to find them.

http://neilvn.com/tangents/nikon-d750-camera-settings-custom-settings/

Best regards,
Russ

CO

As UHH members have already stated make sure your shutter speed is at or below the sync speed. Make sure the camera is not in Auto FP mode and not in Commander mode. I do a lot of studio photo shoots with photography meetup groups. We have the cameras in manual mode and use a light meter. We usually use settings around f/8, ISO 100, 1/100 or 1/125 second shutter. The flash from the strobe is so fast that it will freeze motion so shutter speed is not so critical. The shutter speed will change how much ambient light contributes to the photo a little.