Archive for: 85

Patents: Canon 85mm f/1.8 IS, 100mm f/2 IS, 135 f/2.8 IS

Patents: Canon 85mm f/1.8 IS, 100mm f/2 IS, 135 f/2.8 IS

Patents with three popular telephoto lenses with the addition of image stabilization have shown up. It’s long been expected to see IS added to Canons highly regarded 135 f/2.0, I don’t know where a 2.8 will fit into the lineup, and adding stabilization to the 85 and 100 would follow with Canons current practice of sticking IS on all their mid-range glass.

Patent Publication No. 2014-10283
Publication date 2014.1.20
Filing date 2012.6.29

Example 1
Focal length f = 85.56mm
Fno. 1.86
Angle of view 2ω = 28.4 °
Image height Y = 21.635mm

Example 2
Focal length f = 102.06mm
Fno. 2.00
Angle of view 2ω = 23.9 °
Image height Y = 21.635mm

Example 3
Focal length f = 131.00mm
Fno. 2.80
Angle of view 2ω = 18.8 °
Image height Y = 21.635mm

Canon patents
Positive and negative positive
Inner Focus (group 2)
(Part of the third group) antivibration

Source: [EG]

Update: I accidentally read the135 f/2.8 as f/2.0, apologies for any potential false hope we brought.

cr

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