Difference between revisions of "Sonnar"
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| + | '''Sonnar''' is a product name, derived from the German word for sun: ''Sonne'' . | ||
| + | # It was used by [[Contessa-Nettel]], as lens name for a [[Tessar]]-type F/4.5 lens. The company used the lens for a Contessa-Nettel folding plate camera named ''Sonnar'', too. | ||
| + | # After Contessa-Nettel was merged into [[Zeiss-Ikon]], the name ''Sonnar'' was used for a better lens that was a ground-breaking lens design developed by [[Ludwig Bertele]] for [[Carl Zeiss Jena]], derived from Bertele's [[Ernostar]], but with one lens element more and - for flare reduction - one group of elements less. Soon it was available for the [[Contax]] rangefinder camera with breath-taking lens speed F/1.5 ! | ||
| + | # It became a trademark owned by [[Carl Zeiss]], whilst the company lost the full rights on the patents on the lens type due to lost WWII. Zeiss may license this name to other manufacturers regardless of which design the lens actually uses. Actually postwar Sonnar variants differed from the original Sonnar. Partially their construction returned to principles of the preceeding Ernostar construction, with more groups, since the new postwar ''coated'' lens elements allowed flare reduction despite of more air between certain lens elements. | ||
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| + | [[Category:Lenses]] | ||
Latest revision as of 20:57, 24 April 2024
Disambiguation Page
Sonnar is a product name, derived from the German word for sun: Sonne .
- It was used by Contessa-Nettel, as lens name for a Tessar-type F/4.5 lens. The company used the lens for a Contessa-Nettel folding plate camera named Sonnar, too.
- After Contessa-Nettel was merged into Zeiss-Ikon, the name Sonnar was used for a better lens that was a ground-breaking lens design developed by Ludwig Bertele for Carl Zeiss Jena, derived from Bertele's Ernostar, but with one lens element more and - for flare reduction - one group of elements less. Soon it was available for the Contax rangefinder camera with breath-taking lens speed F/1.5 !
- It became a trademark owned by Carl Zeiss, whilst the company lost the full rights on the patents on the lens type due to lost WWII. Zeiss may license this name to other manufacturers regardless of which design the lens actually uses. Actually postwar Sonnar variants differed from the original Sonnar. Partially their construction returned to principles of the preceeding Ernostar construction, with more groups, since the new postwar coated lens elements allowed flare reduction despite of more air between certain lens elements.
