Roger Hicks
Veteran
You're saying there's been no advance in lens design since Zeiss in the 1930s? This is not a very defensible viewpoint.A Kiev 4 in good working order with a well-calibrated lens can take photos as good or better than the most expensive film Leica with the equivalent Leica lens.
Both in terms of sharpness, resolution, etc, as well as the more subjective "artistic" qualities.
This is also true of thousands of other film cameras.
Digital cameras vary to a small degree because of sensor size, quality, and so forth, but almost any modern digital camera can take technically excellent photographs that rank in the highest percentiles.
There is no compelling reason to use a digital M Leica that costs $7000, for example. The photos will not be that much better than other digital photographs, if at all.
The only reason to use one is because you like to. (which is a perfectly good reason)
Cheers,
R.