Canon Patent for EF 28mm f/1.4L USM Lens

Canon has patented a new prime lens in Japan. The new patent describes the EF 28mm f/1.4L USM lens designed for Canon DSLRs with full-frame image sensors.

The current EF lenses with maximum aperture of f/1.4L lineup includes EF 35mm f/1.4L USM, EF 35mm f/1.4L II USM and EF 24mm f/1.4L II USM models. The EF 28mm f/1.4L USM prime lens comes with the same f/1.4 fast maximum aperture which is ideal as an everyday lens and is very effective in low light conditions.

From the patent application we can say it will be a L-series lens known as more durable, incorporating dust-resistant and water-resistant rubber seal. L lenses also contain optics of higher quality, with many lenses containing fluorite or ultra-low dispersion glass elements, ground aspherically.

Canon EF 28mm f/1.4L USM Lens Patent

Patent Publication No. 2016-31414 (Google Translated)

• Published 2016.3.7
• Filing date 2014.7.28
• Example
• Focal length 28.00
• Fno 1.45
• Image height 21.64
• Overall length of the lens 125.07
• BF 38.73

via: Egami