Archived posting to the Leica Users Group, 2006/11/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Actually Nikon SB800's do the same "pre-flash" but it is so fast it is not visible to think there are 2 flashes going off. Chris ----- Original Message ----- From: "Tina Manley" Subject: Re: [Leica] Anyone test SF-20 with M8 yet? > As far as I know, that's only available with the new SF24. I don't > think anybody's got that one yet. Here's what Dpreview says: > > "The modern metal blade slot shutter in the LEICA M8 enables very > short flash synchronisation times down to 1/250 of a second. In > addition, the LEICA M8 for the first time uses the new M-TTL flash > technology. The special feature of this is that immediately before > the actual flash illumination, a calibration pre-flash is fired. The > TTL metering detects the light reflected from the surface of the > subject, and determines the exact power requirement for the main > flash. The smooth addition of the flash lighting power to the > ambient light allows flash pictures that have the appearance of being > under natural lighting. > > The "Auto Slow Sync" function permits the use of aperture priority > mode in combination with flash technology. This provides a balanced > background to the picture, even if the intensity of the continuous > lighting changes. To achieve the correct lighting, an appropriately > metered brightening flash is used. Depending on the desired effect > or experience, varying lengths of lighting time can be set for the > aperture priority mode. This can be input manually, or if coded > lenses are being used, is can be determined automatically, using the > proven rule of thumb "1/focal length = lighting time in seconds". > > It sounds fine unless you do the kind of photography that I do, where > I try to be invisible. Nothing like 2 flashes to say "Hey! Look at > the camera!" > > Tina