>From Vincente: > The transmision ration off the mirror may change from camera to camera. > Moreover, you don't need to have use a full semi-mirror. Part of the mirror > can reflect all the light to the focusing screen. > > The change of technology for the sensors from TTL-CT-SIR on the Elan II to > TTL-SIR CMOS on the Elan7 can also change the need of light of the sensors. > > There are a lot of variables involved in the design. > > Moreover, the fact that the Elan 7 is not capable of mettering acuratelly > using T or M42 lenses makes me think that something has changed in the > light paths of this camera.
Indeed, I can see some circle-patents on the mirror where the AF points are supposed to be. Thanks for pointing this out Vincente! I would never have thought they'd go introduce more weight and complexities to the mirror given that it will be slapped for every shot. I'd buy the explanantion of CMOS sensor needing more light. Seeing that Canon has now gone from CMOS in the D30 to CCD in the 1D, ever wonder if the next camera will also abandon the use of CMOS in AF sensor. Not metering with T or M42 lens sounds more like Elan 7 doesn't do TTL metering when the lens doesn't communicate properly with the body. Likely a firmware dicision rather than technical challenge. Thanks! BlueSky * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
