I am using a TT500 speedlite external flash and a Nikon D500 DSLR camera.i've got a radio slip set up so that the flash should go off when I hit the shutter. I've checked the channel the radio slip is on and tried turning it off and on.the batteries are full.any help?
Added (1). Yeah, I did mean D5000
>>> Why isn't my external flash going off?