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RF and EF 17-70mm f3.5-5.6 2020 patent applications
#1
Canon has designed lens designs for EF 16-60mm f3.5-5.6 / EF 17-70mm f3.5-5.6 / RF 17-70mm f3.5-5.6 optics.

The focal ranges might sound like APS-C lenses, but the image height mentioned (21.64mm) is used for FF designs (sounds odd, but it is that way).

They make for some very interesting kit lenses, with very serious wide angle.

https://www.j-platpat.inpit.go.jp/p0200
  


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RF and EF 17-70mm f3.5-5.6 2020 patent applications - by Brightcolours - 01-24-2020, 07:21 AM

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