> > Apparently an internal sensor switch, like a mercury switch. A number > of Canon digicams have had them for a while, like the S230 I had. A > number of software viewers, like iView, can recognize these tags and > use them properly. Even on my old EOS 50E (pre digital) there was an internal "sensor" to distinguish horizontal from vertical format [for the eye controlled focus]. I believe it was little more than a trapped ball bearing (mercury too toxic and all that).
> If the camera is pointed to the zenith or nadir, 'up' and 'down' with > respect to points on the picture plane is meaningless. Also, of > course, gravity sensors relating to that picture plane won't work, > and that is quite logical. That's why you need the full kaboodle ... * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
