Archived posting to the Leica Users Group, 2002/04/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]- --On Monday, April 1, 2002 5:14 PM +0200 Pascal <cyberdog@attglobal.net> wrote: > > my experience with the SF20 pertains to the R8 only since I do not have > the M6TTL model (only M6). However, the principles involved are identical. > > In most typical cases, putting everything in automatic will produce good > results (flash on TTL, R8 in P etc). But don't forget that the R8's flash > metering is not zone/matrix (unlike Nikon's 3D system) but of an older > generation (centerweighted). > Thus, if your subject contains very bright or very dark parts, the meter > will be fooled easily, resulting in under- or overexposure. > Case in point: I took lots of indoor images of white marble statues in a > church, in full automatic mode. They were all underexposed because the > meter had taken overweighted the reflected light off the white statues. > The solution would have been to adjust the flash with +1 EV. > The same goes for a dark background, but then you have to adjust - EV. > > When I use the SF20 outdoors, typically for daylight fill-in flash, I put > the R8 in Program mode and the flash in TTL. This will produce very good > results. Never had problems with this. > If the M6TTL behaves differently outdoors, I don't know ! Pascal, The R8 in Program mode *does* behave differently than the M6TTL if we're talking about daylight fill flash. On the R8 in P mode (with a suitable SCA3501/02 flash such as the SF20), a speed of 1/250 sec. is selected, the aperture is selected for a correct exposure with the available light, and the flash is regulated to a minus 1 2/3 EV for "correct" fill ratio at the selected aperture. Since the M6 does not have a P mode (thank God!), you have to select the aperture for correct exposure at 1/50 sec., then dial in minus 1 or 1 1/2 EV on the back of the flash. In manual or shutter priority modes, the R8 behaves similarly to the M6TTL. Aperture priority mode is basically not very useful with the R8 and a TTL flash since the aperture priority is turned off and the shutter speed is locked at 1/250 sec. - -- Rolfe Tessem rolfe@ldp.com Lucky Duck Productions, Inc. - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html