![]() The condenser lens was cemented in place and the cement was some oddball gunk (technical term) that required application at specific temperatures. But there were also construction issues involved. The mechanism was redesigned ostensibly to allow the meter LED's to be piped through. A condenser lens was removed from the frame masking mechanism, making the framelines and RF patch slightly brighter and contrastier (compare any M6 to any well-maintained M2 or M4 and you'll notice the difference. ![]() It's also the same as on the M4-P and, apparently, the later runs of the M4-2. The main reason for the intermittent white-out appears to be that rangefinder optics changed some time during Leica M4-2 production. Still unclear or maybe even in denial about RF patch flare? Read this May 2003 description of all the different types of VF flare at by John Collier. Furthermore, older users claim that their M3s never flare! Consensus amongst users is that it is slightly worse with the 0.85 high magnification M6 finders, and not so bad in older cameras like the M2 or M4. Unfortunately, until the advent of the Leica MP in 2003, this is a known problem and is inherent in the optical design of M rangefinder mechanisms. Sometimes when you are using your M in a brightly lit place and are trying to focus on something in the shadows, the rangefinder patch can experience a "white-out", making focusing impossible. What causes the rangefinder patch to flare? Introduction
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