Many threads about Nikon CLS have contributions stating that the D50 cannot wirelessly control an SB800. In SU4 mode on auto (NOT the same as A/AA auto) the speedlights are both controlled by TTL signals. This is however not the same as Commander mode, which may be where the confusion arises. Below is a D50 and a remote SB800. Camera set to TTL and the remote to auto. Aperture f5.6. Considering the difficult situation ie 2 flashes and a mirror, a pretty good exposure. The D50 speedlight is covered with an old white plastic film canister, with a hole cut in it to act as a diffuser and increase the contribution from the SB800. So no excuses for those of you with a D50! Regards.