4th Compare: Zeiss C Sonnar vs Leica Summilux-M (and 1955 Summicron)

Full review will be coming in the next few weeks. These compares right now are quick analysis I use and compare the two lenses. Please see Compare #1, Compare #2 and Compare #3 posted earlier.

Carl Zeiss C Sonnar 1.5/50
Carl Zeiss C Sonnar 1.5/50

So, I decided to throw the 1955 Summicron 2/50 Collapsable into the mix.  Muhahaha!  For this first test, the three were shot at their respective wide-openness from relatively the same vantage point (I was too low to use a tripod).  Above is the modern f/1.5 Zeiss Sonnar.  Below find the modern f/1.4 Summilux-M ASPH and 1955 f/2 Summicron versions.  Nothing scientific here - just a bunch of SOOC files to look at.  Click for large:

Leica Summilux-M 1.4/50 ASPH
Leica Summilux-M 1.4/50 ASPH
1955 Leica Summicron 2/50 Collapsable
1955 Leica Summicron 2/50 Collapsable

I also took these to the swamp for some f/11 compares. Again, all RAW, all SOOC.  I kept the shutters identical (a little on the dark side, though):

Leica Summilux-M 1.4/50 ASPH f/11
Leica Summilux-M 1.4/50 ASPH f/11
Carl Zeiss C Sonnar 1.5/50 f/11
Carl Zeiss C Sonnar 1.5/50 f/11
1955 Leica Summicron 2/50 f/11
1955 Leica Summicron 2/50 f/11

Finally, a compare of just the modern glass -  settings ISO 160 f/2:

Carl Zeiss C Sonnar 1.5/50
Carl Zeiss C Sonnar 1.5/50
Leica Summilux-M 1.4/50 ASPH
Leica Summilux-M 1.4/50 ASPH