Aurance,
WOW> . pretty impressive breakdown.
Honestly, using the process of elimination,
the camera itself do not deliver a particularly different file...
The sensor is not really magic
the lens is not shockingly fast - particularly the cron's
the lenses ARE very sharp wide open, so that is something.
We can pretty quickly agree that any high-end SLR, equipped with a fast 50mm 1.4 or better, can match the general technical description.
I will not pursue the comparison of lenses further, as many of the lengendary leica look images was captured with 1950 lens which are easily matched by the big camera makers today, so lets not get into the otherwise interesting lens discussion just now.
This leaves us with at least one interesting variable.
How the camera get between you and the object. Its more than a matter of keeping it simple, its a matter of the camera controls and function supporting your photography of the above said image. Having spend most of my life using pro SLR/DSLR's for my work, I can safely say that your head works differently when working with a M style camera. interestingly you will find this also applies to the use of Zeiss Ikons, Voigtlander Bessa's, Leica CL and surely other rangefinders which I forgot to include... I call it "not getting in the way".
another is emulsion. a lot of the iconic images was captured on different film, Im scanning my grandfathers old HP3 negs, wow they are contrasty, grainy and quite different from a roll of ilford today. They were all more contrasty, the D-lux have a setting called dynamic which might provide some of that.
What the D-lux also have is ease of use, it don't much get in the face of the shooter or the subject. so that might help it get a look to the images.
Go to your camera store and rent a Leica and a 50lux or 35lux for the weekend.. its either going to shake you off right there or you will be sold and then you have the problem of being hooked on a very lovely camera system.
Bo
DOWNLOAD template for handcoding M lenses
http://bophoto.typepad.com/bophoto/2009/01/m8-coder-simple-manual-handcoding-of-m-lenses.html
Random d-lux4 images -
http://bophoto.zenfolio.com/p978526368
Experimental blog -
http://www.bophoto.typepad.com
Homepage -
http://www.bophoto.com/panos