Archived posting to the Leica Users Group, 2003/04/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I suppose next you will take apart one of your R lenses and discover it is a disguised T&S lens! April Fools? John Collier On Tuesday, April 1, 2003, at 01:29 AM, Martin Howard wrote: > I've been playing around with my R6 over the weekend. It needed a > spring > clean, mostly because the metering mode selector was getting sticky, > so, > armed with Tomosy (which doesn't describe the R6, but does have the > R4), I > pryed off the top plate to get at the gunk lodged around the controls. > What I discovered was quite interesting and I thought I'd ask if anyone > else has had similar experiences. > > I should prefix all this by saying that I'm no camera repair expert (or > even camera expert). However, when I was removing the shutter speed > selector dial, I noticed that there was a small washer with a protuding > stop that prevents the dial from being turned past the 1/1000s > setting. I > noticed this, because I initially forgot to remount it when I was > putting > the dial back together again and discovered that I could turn the dial > past > the 1/1000s. In the viewfinder, the little indicator showing the > selected > shutter speed was blank. > > Interestingly enough, the shutter still works on this setting. Even > more > interesting, as I was playing around with it, the shutter speed sound > changed depending upon how I was holding the camera (no lens was > mounted > on it at this time). Curious, I mounted a lens and did some more > systematic experiments. > > As far as I can tell, the shutter speed is being changed (somehow!) by > the > camera in response to the light coming in through the lens. Changing > the > aperture also changes the shutter speed. In essence, this is how > aperture > priority automatic exposure works. > > I have no idea how this is accomplished, since I thought the R6 was all > mechanical. However, according to a mesage in the Leica FAQ it is > apparently really some kind of hybrid shutter. See the following link: > http://www.nemeng.com/leica/002c.shtml > > Is it possible to mechanically achieve this result? Is it a standard > feature of all R6 cameras, or has someone modified my camera in its > past? > Did Leica experiment with A-mode R6s, or did they save on costs by > using > circuit boards/circuits/mechanics from previous R4/R5 cameras? - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html