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April 17, 2014
Posted in patents

Another Canon Patent For A 24-70mm f/2.8 Image-Stabilized Lens

Canon Patent

Egami (translated) spotted a Canon patent for a 24-70mm f/2.8 IS lens. This is the fourth time I am posting about such a patent (the other patents: 1 | 2 | 3).

  • Patent Publication No. 2014-52413,2014-52445
    • Publication date 2014.3.20
    • Filing date 2012.9.5
  • Example 1
    • Zoom ratio 2.75
    • Focal length f = 24.7-35.21-68mm
    • Fno. 2.9
    • Half angle ω = 41.21-31.57-17.65 °
    • Image height 21.64mm
    • 223.94-207.87-180.56mm overall length of the lens
    • BF 38.31mm

Canon Patent

[via Egami]

April 14, 2014
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Canon Patent For New 22-46mm Lens For EOS-M System

Canon Patent

Egami (translated) spotted a patent filed by Canon for a 22-46mm f/3.5-5.6 lens for the Canon EOS M system (price & specs). Canon always said there will be more lenses for the EOS M system.

  • Patent Publication No. 2014-63025
    • Publication date 2014.4.10
    • Filing date 2012.9.21
  • Example 7
    • Zoom ratio 2.09
    • Focal length f = 22.10-34.22-45.19mm
    • Fno. 3.60-4.59-5.60
    • Half angle ω = 31.72-21.76-16.48 °
    • Image height 13.66mm
    • 65.76-62.07-64.72mm lens length
    • BF 28.16-36.88-45.09mm
April 5, 2014
Posted in patents

Canon Patent To Make Display Of RAW Images Quicker

Canon Patent

Egami (translated) found a patent filed by Canon to accelerate the display of RAW files. The machine translated text says:

By using an extracted region of the focus area in focus, it is placed at the beginning of the file, the display of the file seems to be faster in practice

  • Patent Publication No. 2014-53701
    • Publication date 2014.3.20
    • Filing date 2012.9.6
  • Canon patents
    • From the in-focus position, to determine the area to be displayed in preference
    • To be recorded in the file rearranges the area
    • Face detection, or if you have focused on the focus area of ​​multiple consideration
March 31, 2014
Posted in patents

Canon Patent For New 85mm, 100mm, and 50mm Lenses

Canon PatentCanon Patent

Egami (translated) spotted a new patent filed by Canon.

The patent refers to 85mm f/1.8, 85mm f/1.2, 50mm f/1.4, and 100mm f/2 lenses. The next reiteration of some of Canon’s lenses?

Patent Publication No. 2014-52412

  • Publication date 2014.3.20
  • Filing date 2012.9.5

Example embodiment
Example     Focal length     Fno.     Length     BF
One             85.00     1.24     125.55     38.98
Two            85.00     1.80     113.57     39.50
Three         51.70     1.41     88.04     39.00
Four         100.00     2.00     120.00     39.60
Image height = 21.64mm

 

March 17, 2014
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Sigma Patent For 28-85mm OS Lens For Mirrorless Cameras

Sigma Patent

Will there soon be another lens for the EOS M system? The patent was spotted by Egami (translated).

At least Sigma is working on an image-stabilized 28-85mm f/3.5-5.6 lens for APS-C mirrorless systems. Exciting news, though I am a bit puzzled because of the 28mm – rather unusual for a crop sensor camera.

  • Patent Publication No. 2014-44246
    • Publication date 2014.3.13
    • Filing date 2012.8.24
  • Example 1
    • Zoom ratio 2.84
    • Focal length f = 29.01-50.00-82.48mm
    • Fno. 3.63-4.59-5.78
    • Angle of view 2ω = 53.08-31.21-19.16 °
    • Image height Y = 14.20mm
    • 92.04-103.13-116.62mm overall length of the lens
    • Inner Focus (Group 4)
    • Anti-vibration (group 2)

Sigma Patent

March 12, 2014
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Canon Patent For New Macro Lenses With Hybrid IS (180mm, 200mm, 300mm)

Canon Patent

180mm f/3.5 Macro IS

Canon Patent

200mm f/3.5 Macro IS

 

Canon Patent

300mm f/3.5 Macro IS

Egami (translated) spotted another patent filed by Canon, this time for new macro lenses with hybrid image stabilization: 180mm f/3.5 IS, 200mm f/3.5 IS, and 300mm f/3.5 IS.

  • Patent Publication No. 2014-41224
    • Publication date 2014.3.6
    • Filing date 2012.8.22
  • Example 1
    • Zoom ratio 1.37
    • Focal length f = 180.03-167.06-131.08mm
    • Fno (3.6-4.8-5.8 actual aperture). 3.6-3.3-2.59
    • Half angle ω = 6.85-7.38-9.37 °
    • Image height 21.64mm
    • The overall length of the lens 228.39mm
    • BF 68.14mm
  • Example 2
    • Zoom ratio 1.58
    • Focal length f = 198.49-164.7-125.48mm
    • Fno (3.6-4.8-5.8 actual aperture). 3.6-2.99-2.28
    • Half angle ω = 6.22-7.48-9.78 °
    • Image height 21.64mm
    • The overall length of the lens 231.65mm
    • BF 71.4mm
  • Example 3
    • Zoom ratio 1.92
    • Focal length f = 289.97-213.39-151.33mm
    • Fno (3.6-4.8-5.8 actual aperture). 3.6-2.65-2.21
    • Half angle ω = 4.27-5.79-8.14 °
    • Image height 21.64mm
    • The overall length of the lens 294.36mm
    • BF 68.05mm
  • Canon patents
    • Inner focus
    • (Part of the fourth lens group) antivibration
    • Supports Shifutobure
    • Floating

 

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