Cosina has new patents for 25mm f/2, 75mm f/1.8, 135mm f/2, and 135mm f/1.2 lenses: Cosina’s patent application was published on March 18, 2021. There are some examples such as “APO-LANTHAR 50mm F2”, but some of them are interesting such as “135mm F2” and “135mm F1.2”. Voigtlander recently announced several new APO-LANTHAR lenses for Leica […]
Canon’s patent 2011-145518 for a 16-35mm f/2.8 lens: Publication date: Jule 28th, 2011 Patent filing date: January 15th, 2010 Focal length: 16.48 – 33.95 mm Aperture: 2.91 Half angle of view: 52.70 – 32.51 ° 4 aspherical elements Zoom ratio: 2.06
Cosina announced on their website that they will no longer produce Carl Zeiss ZK lenses series (for Pentax k-mount SLR cameras). Current models will be sold until they run out of stock.
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