Canon Files Patent for 40-800mm f/4.5 Lens for Full Frame DSLRs

Canon’s research division has been busy so far this year, entering several exciting patent applications for products that may not ever see the light of day. Back in March, they patented a moving sensor design, and then in May they filed for an EF 28-560mm f/2.8-5.6 super lens. Last month a new filing emerged for an EF 1000mm F/5.6 IS DO lens, and just yesterday we reported Canon’s patent for a 15-75mm f/2.0-5.6 fixed lens APS-C camera.

Now, if we’re to put any weight to patent applications, we can assume Canon is looking into manufacturing four EF 40-800mm f/4.5-5.6 lens – two for full frame DSLRs and two for PowerShot SuperZooms.

The patent was spotted by Egami, the same Japanese blog which first reported Canon’s moving sensor application.

While a 40-800mm lens would be a boon for sports photographers, the technical challenges of producing one that will deliver while remaining useable makes it hard to believe Canon is actually going to make them – but never say never.

Cover image: cabodevassoura on Flickr.