Imaging recource: Canon patent shows off what could become the world’s widest non-fisheye prime lens

An intriguing new patent from Canon shows off the optical formula for a non-fisheye EF 10mm f/2.8 lens. Filed back in November of 2013, Patent Publication No. 2015–102620 (translated) shows off what could very well become the widest non-fisheye lens Canon has ever produced. From the illustration, it appears the lens will consist of 15 elements in 7 groups. As noted by Canon Rumors, this patent could simply be part of an optical formula used to develop Canon’s EF 11–24mm f/4 lens. However, there’s the possibility it could also...
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