i'm sure you're quiet knowledgeable on other matters of style, but with regards to the leica m i don't think you know what you're talking about.
leica mp
does have a built in light meter, which does comprise of electronics... perhaps you're talking about "electronic configurations" of leica m7 which additionally has auto exposure?
either way, your statement with regards to "reservation" is about as asinine as me saying toyota only reserves their hybrid engines to the prius model and not to a '92 camry.
do you have much experience with shooting an m3 and m6? do you own a leica m for that matter?
has the lighter weight significantly hindered your ability to take photos? to be honest, and not to be rude, you just seem to be throwing in your 5 cents just to show that you know something, of which you've read a glimpse somewhere else.
and if you do, and you honestly went for an m3 because it was heavier than an m6 and now you feel inferior to a zeiss owner, i feel sad because you're probably missing out on a whole point of a range finder.
Quote:
Originally Posted by
LabelKing 
Leica has for some time not used brass in their M-models, and the M6 was no exception; apparently they only reserve brass materials for their MP model which is supposed to be the "purist" edition since it lacks a meter and other electronic configurations. However, even the MP is far lighter in heft than the old M3s, or for the sakes of the discussion, the original MP, which was marketed towards professional journalists.
The M3's body was done in brass and finished in chrome which I believe to be a more difficult method of finishing than what the M6 or later Ms have. Also, there is a certain--intangible if you will--delicacy and refinement that the M6 lacks and which the earlier M-series cameras possess, such as the M1 or M2. Lots of people have also complained about things breaking off their newer Leicas, which is not a problem associated with early M-series cameras.