Ben Z said:
I'd have to put my trust in the opinion of DAG or Sherry K on that issue, and they both say the MP is not better made than the M6, with the exception of the rangefinder mirror and condenser lens to reduce the blanking out of the rangefinder rectangle in very specific conditions.
quoting Erwin Puts:
"The M3 is composed of about 860 parts, counting every screw and washer. The M7 has 1300 parts, and again every electronic component has been counted as a separate part. 350 of these parts are new and/or improved parts when comparing to the M6TTL. Two hundred of those parts are electronic and 150 are mechanical. "
"The shutter has been improved and changed substantially. In addition the top cover is now machined out of one piece of brass. The slow speed geartrain is gone, but electronics have been added. The total weight has been increased to 610 grams (10 grams more than the M6TTL) and the Leica R6.2 has a weight of 625 grams. The weight of the M7 adds to the stability when using slow speeds and is also an indication of the solidity of the engineering and the ample use of steel and glass. M3 cameras from 1954 are still functioning perfectly after more than 50 years of use. They have a working life of at least 50 years and with some care will function for the next 50 years too. The M7 would be able to function till 2102 at least. That would cover three generations of photographers. The shutter is designed for 100.000 pictures before showing any sign of wear! You can shoot 2700 rolls of film before you could detect any tear or wear in the moving parts."
"The shutter curtains are more light tight and the occasional light leaks of the older shutter curtains are now extinct. Even more important is the improved mechanical geometry of the shutter. As has been explained in the M7 review the shutter curtains have an acceleration and deceleration moment, when speed is building up and the curtain mass must be braked. Here we have an area of variable geometry and a careful redesign of the rollers and springs and braking elements has resulted in a very even movement over the travel length. Occasionally users have noted very small darker bands at the sides of the frame as a result of the shutter movement being too slow at the start and stop moments. With the new design there should be no problem.
Gears and other moving parts have been improved by a new shape and surface treatment, which will increase the mean time before failure and enhances the smoothness of the operation. The current manufacturing procedures and assembly methods allow for a slight tolerance in the selection of matching parts and some users, when comparing the M6 or M7 with a finely tuned M3 will notice a certain roughness when transporting the film or pressing the two way shutter release. With the MP there is no such thing: all operations are extremely smooth and in direct comparison to my M3 even show improvements in smoothness and noise reduction. I checked several MP models and all were alike."
This is not to say anything against M4-2,M4-P,and M6 quality , who are to be interpreted as products of that period, and it was mandatory to control costs maintaning core quality as possible (bodie cast of zinc, some use of plastic in the components, less expensive coatings...), leaving photo quality unalterated.
This is just to say that in new millenium many customers are happy to pay a litte (still!) more if they can have a "state of the art" jewel, justifying costly materials, making something near swiss luxury watches rather than a easy obsolete camera.
Digital will be next round.... we'll see.