Originally Posted by narutard101
kind of dumb question. I've been wanting to do a wireless light setup but I've been reading that the D3100 isn't capable of doing so?
I'm not familiar with Nikon, but my guess is that it doesn't have built-in wireless communication to the flash, but you can almost certainly use other means of doing off-camera flash:
1) Get a wireless transmitter that fits on the hotshoe, and an accompanying wireless receiver that fits on the flash. Examples, Yongnuo RF-602 or Cactus V5.
2) Or, get off-camera flashes that will work as optical slaves - that is, they watch for any other nearby flash, and flash simultaneously. Use the D3100's pop-up flash to trigger the optical slaves; turn the power of the pop-up flash way down if you don't want it to influence the exposure. Examples: Yongnuo YN-560.
I use a combination of both, depending on what I'm doing. My common setup is the wireless transmitter on the camera, the wireless receiver on my 430EXII, and two YN-560s set to optical slave mode. When I squeeze the shutter button, the wireless trigger makes the 430EXII flash, and when the YN-560s see it they also flash.
Note that optical slaves won't work so well if there are other flash users in the vicinity. Rather, they'll work too well - they'll go off any time anyone's flash fires, thereby rapidly draining your batteries, potentially overheating, or simply not being recycled and ready to flash when you need them.