Archived posting to the Leica Users Group, 2003/03/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Ernest Nitka wrote: > I have an M7 with the SF 20 flash unit - I 'm not sure it's working or > that I know what I'm doing. I don't do much flash work which is why I > need help. > > i attache the SF 20 to the M7 , turn both on with the SF20 being set to > TTL. Camera has no film in it so it defaults to ISO 100 I would > suspect. My question is that when i shoot towards a wall of books abut > 8 feet away at f/4 neither the SF20 or the M7 indicate that it was an > adequate exposure ( the flash icon goes away immediated and the 'ok' LED > on SF 20 does not lite up) the SF20 is set on f/4. why is this because > prior to shooting the SF20 says i should be ok up to 16 feet ( GN=66/4 > =~ 16). I have to open up to f/2.8 to get both the SF20 and M7 to say > that there was adequate exposure. What am I doing wrong? Ernie, The thing that is not clear from the SF20 manual is that in TTL mode, you don't have to set *anything* on the flash at all. It picks up all the information it needs from the camera. The aperture setting on the flash is for information only, just so you will know what distance ranges are possible at what apertures but you don't usually need to consult it at all. So, I'm not sure that you *are* doing anything wrong... Rolfe - -- Rolfe Tessem | Lucky Duck Productions, Inc. rolfe@ldp.com | 96 Morton Street (212) 463-0029 | New York, Ny 10014 - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html