Archived posting to the Leica Users Group, 2000/03/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hey, Dave...I may be really off- base here, but I can't think of a reason why the white dot being misaligned would in any way effect exposure reading. The meter is measuring light coming through the lens hitting the shutter. Whether or not the lens is mounted at 12 o'clock, the same amount of light is getting through. What might be happening is that you are somehow getting thrown by the misaligned dot, and are setting exposures incorrectly. B. D. Down the road in Brookline, MA - -----Original Message----- From: owner-leica-users@mejac.palo-alto.ca.us [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of DavidS8451@aol.com Sent: Wednesday, March 29, 2000 1:34 PM To: raimo.korhonen@pp2.inet.fi; leica-users@mejac.palo-alto.ca.us Subject: Re: Vs: [Leica] adapter problem with 15mm Heliar Raimo, Thanks very much for your reply. I think the underexposure is being caused by the fact that the lens is not completely alligned (the white mark does not go all the way to the 12 o'clock vertical). However, I will take some test shots using an incident meter and another lens for comparison. Thanks again, Dave Schaller Newton, MA In a message dated 3/29/0 1:21:21 PM, you wrote: >I have the same kind of adapter - not at all well made Japanese thing - but no >exposure, vignetting or focus problems. > >I noticed that the threads were quite poorly made and very sharp. I used a sharp >tool to even out the bottoms of the grooves and sandpaper on the tops and it helped >a bit. Now I have found out that it gets better with use so every now and then >I unscrew the lens from mount and then screw it back. It aligns quite well now >but not perfectly. > >It would have been better to buy a good quality adapter in the first place and >a genuine Leica adapter was available but it keyed 35-135 frames and I wanted 50-75. > >How could an adapter cause underexposure? The lens is really wide so be careful >not to meter off too much sky. > >All the best! > >Raimo