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Patent: EF 15mm f/4 & EF-M 9.5mm f/4

A new patent showing an optical formula for a new wide angle prime has appeared. The full frame lens in the application is an EF 15mm f/4, while the APS-C optical formula of a EF-M 9.5mm f/4 shows a shorter backfocus than an EF-S lens and could actually be EF-M. Japan Patent Application 2018-004726 Canon EF-M Read more......

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Published By: Canonrumors - 5 days ago

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