Carl Zeiss Tessar Silver 12 Blade Heritage

Overview

The Tessar is one of the oldest optical designs in photography, dating to 1902, and stands among the very first consumer lens designs. The name 'Tessar' derives from the Greek 'Téssera,' meaning four, a reference to its four-element construction. The 50mm f/2.8 rendition traces to a pivotal moment in camera history: in 1932, when the Leica II by Leitz of Wetzlar ruled 35mm photography, Zeiss Ikon of Dresden set out to build a superior competitor. This became the Contax I, and to serve it Zeiss Jena redesigned the Tessar to cover the 24x36mm negative, birthing the first Tessar 50/2.8 for 35mm format. During its era the lens earned the German nickname 'Adlerauge' ('Eagle's Eye') because it was considered exceptionally sharp. After WWII, the Tessar was produced in both East and West Germany for numerous camera brands and in a wide variety of mounts. The postwar versions were recalculated shortly after the war and differ optically from the prewar design; the silver, collector-favored versions from around 1950 to the mid-1950s are especially sought after for their looks. The 50/2.8 is regarded as the fastest of the 50mm Tessars, stretching the classic design, since Tessars were typically made in moderate speeds from f/5.6 to f/3.5. People love it as one of the most prolific and 'immortal' classic designs, with the multi-blade postwar variants prized for their smoother, rounder aperture discs.

Verdict: The Carl Zeiss Tessar Silver 12 Blade is a compact, historically significant classic lens best suited to collectors and enthusiasts who appreciate the immortal Tessar design and the smoother discs of its 12-blade iris. As the fastest of the 50mm Tessars, it delivers a sharp center that lives up to its 'Eagle's Eye' reputation once stopped down, but you accept mediocre corners and inconsistent bokeh as part of its vintage character.

Optical Character

Bokeh

Mixed and inconsistent by nature of the Tessar design, though the 12-blade iris renders smoother, rounder out-of-focus discs than later 5-blade versions.

Sharpness wide open

Center is a little soft wide open at f/2.8 but becomes good and crisp at f/4 and beyond; corners are characteristically mediocre.

Community Insights

What people love

The 12-blade iris produces smoother, rounder out-of-focus discs than later versions with fewer blades
Reputation as the fastest of the 50mm Tessars, stretching a classic design known typically for f/3.5-f/5.6 speeds
Historic pedigree as one of the oldest optical designs (1902) and the 'Adlerauge' (Eagle's Eye) legacy for sharpness
Sought after by collectors for its looks, particularly the silver postwar versions
Compact and light with a focusing ring offering good grip, resistance, and impressively long ~270° travel

What people dislike

Mediocre corner performance inherent to the classic Tessar design
Inconsistent bokeh that can range from acceptable to bad
Center is a little soft wide open at f/2.8
The aluminum barrel resists stains but not corrosion, so poorly stored examples develop crusty corrosion and discoloration
Build feels lighter and less substantial than other Zeiss lenses
The compact size makes the focusing ring a bit tiny

Pro Tips

Stop down to f/4 and beyond for crisp, sharp center results; wide-open f/2.8 is a little soft
On preset versions, set the aperture on the preset ring, focus wide open, then turn the aperture ring to stop down exactly to your set value before exposure
Favor the 12-blade version over the 5-blade M42 versions for rounder, smoother out-of-focus rendering
Given the aluminum barrel's poor corrosion resistance, store it in a dry environment

Sources (1)

Web-grounded synthesissecondary

The Tessar is one of the oldest optical designs in photography, dating to 1902, and stands among the very first consumer lens designs. The name 'Tessar' derives from the Greek 'Téssera,' meaning four, a reference to its four-element construction. The 50mm f/2.8 rendition traces to a pivotal moment in camera history: in 1932, when the Leica II by Leitz of Wetzlar ruled 35mm photography, Zeiss Ikon of Dresden set out to build a superior competitor. This became the Contax I, and to serve it Zeiss Jena redesigned the Tessar to cover the 24x36mm negative, birthing the first Tessar 50/2.8 for 35mm format. During its era the lens earned the German nickname 'Adlerauge' ('Eagle's Eye') because it was considered exceptionally sharp. After WWII, the Tessar was produced in both East and West Germany for numerous camera brands and in a wide variety of mounts. The postwar versions were recalculated shortly after the war and differ optically from the prewar design; the silver, collector-favored versions from around 1950 to the mid-1950s are especially sought after for their looks. The 50/2.8 is regarded as the fastest of the 50mm Tessars, stretching the classic design, since Tessars were typically made in moderate speeds from f/5.6 to f/3.5. People love it as one of the most prolific and 'immortal' classic designs, with the multi-blade postwar variants prized for their smoother, rounder aperture discs.

https://phillipreeve.net/blog/carl-zeiss-jena-tessar-50mm-f-2-8-review/https://richardhaw.com/2021/08/05/repair-carl-zeiss-jena-tessar-50mm-f-2-8/