Carlo, My SB-28 has an AF assist beam that functions just fine when mounted on my SC-17. I hardly ever use the SB-28 on the hot shoe. However, when hand holding the speedlight, you have to be sure to aim the unit directly at the subject so that the beam will illuminate it. This may be tough in low light with both hands quite busy! Personally, I think focus aid beams should be on the camera body, not the flash or remote cord. This way AF is useable even when no flash is used (or desired). Minolta has this on some of their AF bodies. With respect to the lock pin, my SC-17 does in fact have the socket for the SB-28's pin to drop into when the lock ring is turned. However, the end which attaches to the hot shoe just has the clamp portion, which I think is suficient, since little if any stress is placed on this connection in a direction which would cause it to slip off. Hope this helps. Merry Christmas! Jim Korczak Pocono Mountains, USA >>>>>>>>>>>>>>>>>>>> Date: Wed, 23 Dec 1998 00:55:47 -0800 (PST) From: carlo guerrero <[EMAIL PROTECTED]> Subject: Christmas wish [v04.n175/4] Message: 4 Merry Christmas to everyone. has anybody used their sb-xx handheld with an sc-17 cord, and tried autofocusing it in a really dark place? or has used their sb-xx on a storboframe in darkness? If you have, you might be very well aware thet it is almost impossible to autofocus and get a sharp shot. will nikon ever come up with a replacement for the sc-17 which incorporates a focus aid beam? and another thing, the sc-17 does not have the posi-mount provision which prevents the sb-xx from sliding off its hot shoe. i wish Santa will send me one this christmas... the sc-29? carlo _________________________________________________________