i've been trying to use my sb800 as an off-camera flash along with my pop up flash(set it just to trigger the sb800 without affecting the exposure)
when i try to shoot at higher apertures such as F7.1 or F8 with shutterspeed of 1/160, the picture is just pitch black. When i set it to F2, it gets better
For the exact same settings but with the sb800 mounted on top of the camera, i get totally different results though. F7.1 or 8 is properly exposed while F2 is overexposed.
Am i missing something here or is there a problem with the flash/camera?
PS. im pretty okay with photography but this off-camera flash/strobes thing is pretty new to me