Archived posting to the Leica Users Group, 2009/04/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On 2-apr-2009, at 5:39, Lawrence Zeitlin wrote: > > On Apr 1, 2009, at 10:20 PM, Doug wrote: > >> Lawrence Zeitlin wrote: >> >>>>> >> a scanning sensor need only cover the frame in >> 1/30 to 1/50 second. That's the speed the shutter slit moves in film >> Leicas. Rotating the sensor strip would not be a problem at that slow >> speed. Still a mechanical kludge however. >> <<< >> > Doug answered: > >> Even if the sensor strip could scan at that speed and rotate enough >> (variable rotation for a variety of lenses) anyone who wants to use >> electronic flash is SOL. The scan strip would also have to cover >> the frame >> at a constant speed, something which mechanical shutter blades >> don't do. > > > Doug, > > I'm not about to design a full frame Leica. BUT moving a sensor 1 > 1/2" at a constant speed is no big deal in this day of linear > motors and electronic speed measurement. Tilting a sensor a couple > of degrees as it travels is no big deal either. The disc drive in > your computer moves a read/write head to a variety of positions in > a 30 degree arc in a tiny fraction of a second. It is hard to > believe that all the imaginative people in Solms couldn't come up > with a way make a full frame Leica, at least for lenses 50 mm or > longer, perhaps a digital M3. Reserve the M8 for wide angle > fanatics. I'm still hoping for a digital back to replace the film > inspection door on my M series film cameras. If one sold for $1000 > or less I'd buy it in a minute. The whole point of a full-frame M is to use the full image circle of wide-angle lenses, and there's no need to go to a 'scanning back' or any other full-frame solution to avoid angle-of-incidence problems if the camera is restricted to 50mm or longer lenses. Doug Herr Birdman of Sacramento http://www.wlidlightphoto.com -------------------------------------------------------------------- mail2web.com ? Enhanced email for the mobile individual based on Microsoft? Exchange - http://link.mail2web.com/Personal/EnhancedEmail