On Fri, 19 Mar 1999 15:09:57 -0800 Logan Leachman wrote: > I recently purchased an SB-28 to go with an N90s. My question is this. > How does one go about figuring exposure when bouncing the flash of the > ceiling? Thus far I have been very happy the flash and letting it (the > flash) handle determining power output level. Your question implies you'd like to use the flash in manual mode, rather than TTL-auto-flash. In this case, you'd have to measure the total distance the light takes from leaving the flash unit and hitting the subject. You'd then set an f-stop as follows: f-stop = guide-number / distance. Of course, this doesn't take into account the reflectance and colour of what you're bouncing off of. I once read in a photo book to open up maybe another stop to take account of these parameters when you're bouncing off a white wall or ceiling. Bye, Mike [EMAIL PROTECTED] www.NetworX.ie ---
