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Nikon D90 SB900 and wireless mode?
I have a Nikon SB900 and Nikon D90. Can the flash of my camera trigger flash from a distance? I put the flash behind a model, and shoot from the front. If I can do that with this team, what settings on the camera and flash should I use?
The flash can be triggered wirelessly. You basically need to adjust the camera as a flash menu command, then the SB900 in remote mode (using the mode dial on the back). You may have to match the groups and the channels between the flash and the camera, whose details will be at the user manuals for the camera and flash. When shooting is possible that two of the three attempts before the camera detects the flash and start working so be patient and try to not leave the flash range. For more information, see page 188 of the D90 manual.
Unboxing Cactus V4 – Wireless flash trigger