2010/6/6 Jeff Kelley <jlkphoto@xxxxxxxxx>: > What metering technology is used in the current generation of > Rolleiflex TLRs ,the FX, FW, FT? How accurate is it? Jeff: FX, FW and FT use the same electronic metering system used for the GX. It is made on the basis of the metering system developed for the SLX/6000 cameras from 1973 and applied for the SL66 E from 1982, the GX lightmeter is linked to the SL66 E metering system directly and the flash TTL metering for the GX-SL66E-SLX/6000 cameras is linked to the SL 2000F flash metering developed previously. These GX, FX, FW and FT Rolleiflex TLR cameras have two Silicium cells behind the mirror within an area with a special treatment to allow light readings, this way the cells are pretty protected from the light coming through the viewfinder focusing screen; although Rollei considers the meter "center-weighted average" it could be considered "semi-spot" or "large-spot" because the measuring area is pretty small. According most pro and semi-pro users comments, the metering system is very accurate and it is one of the most appreciated features for the new TLR cameras. The light readings are shown via five LED beside the viewinder focusing screen: A (red) = at least 1 exposure value under-exposed, B (yellow) = about 1/2 exposure value under-exposed, C (green) = Correct exposure, D (yellow) = about 1/2 exposure value over-exposed, E (red) = at least 1 exposure value over-exposed. The cameras have a third Silicium cell for TTL flash metering placed in the taking lens chamber, close to the film plane to read the light on the film plane, this flash metering system is linked to the Metz flash SCA300 system and Rollei SCA356 adapter. The cameras use a PX28 battery for the lightmeter only. Carlos --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list