Leica Carl Zeiss Jena 5cm F1.5 Sonnar "T", LTM Mount

[Brian]

The Wartime 5cm F1.5 Sonnar "T" in Leica mount- this one from 1943. The sonnar was recomputed in 1939, improved resolution and sharpness of field compared with the pre-war version. A lighter alloy used for the barrel, and hidden set screws used to secure the namering and rear fixture.

Wide-Open on the M9.

Gunston Hall 2, 1943 Sonnar 5cm F1.5, Wide-Open by fiftyonepointsix, on Flickr

At F4,

Gunston Hall 2, 1943 Sonnar 5cm F1.5 by fiftyonepointsix, on Flickr

F1.5,

Gunston Hall 2, 1943 Sonnar 5cm F1.5 by fiftyonepointsix, on Flickr

F4,

Gunston Hall 2, 1943 Sonnar 5cm F1.5 by fiftyonepointsix, on Flickr

 

[Brian]

Distance, F1.5

Gunston Hall 2, 1943 Sonnar 5cm F1.5 by fiftyonepointsix, on Flickr

F4,

Gunston Hall 2, 1943 Sonnar 5cm F1.5 by fiftyonepointsix, on Flickr

 

[Brian]

At F1.5,

Manassas Battlefield by fiftyonepointsix, on Flickr

Manassas Battlefield by fiftyonepointsix, on Flickr

Manassas Battlefield by fiftyonepointsix, on Flickr

This lens has a lot of contrast even wide-open.

 

[Brian]

At F4,

Manassas Battlefield by fiftyonepointsix, on Flickr

Manassas Battlefield by fiftyonepointsix, on Flickr

The focus mount of this version Sonnar is fragile. This one is good, probably not used much: the middle triplet was loose when I got it, did not hold focus. I have another one that saw heavy use, the helical was loose and the focus had a lot of slop in it. For that one; I made a sleeve for the mechanism to hold the inner helical steady as it was used.