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October 20, 2014
Tags:
Posted in Patents

Canon Patent For 10-22mm Lens With Liquid Element (it’s not the first)

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Lens With Liquid Element

Egami (translated) spotted a patent filed by Canon for 10-22mm f/3.5-4.5 lens with a liquid element. Liquid lenses work by applying an electric voltage to an electrolytic solution (that’s the liquid) in order to curve its surface (called meniscus). This is not the first patent of this kind filed by Canon (1 | 2). Hard to say if such a lens will come to the market any time soon.

  • Patent Publication No. 2014-145883
    • Published Date 2014.8.14
    • Filing date 2013.1.29
  • Example 4
    • Zoom ratio 2.07
    • Focal length f = 10.30-13.12-21.35mm
    • Fno. 3.23-3.62-4.63
    • Half angle ω = 52.86-46.03-32.50 °
    • Image height 13.60mm
    • The overall length of the lens 135.13-133.91-135.09mm
    • BF 0.15mm
  • Canon patents
    • And by varying the shape of the boundary surface, thereby changing the refractive power
    • Zooming, and has a refractive power element is positive, the element is negative
    • And reduce the variation of the curvature

[via Egami]

November 25, 2013
Tags: , ,
Posted in Deals

Canon Lens Discounts at B&H (10-22mm, 50mm f/1.4, 85mm f/1.8)

Canon Lens Discounts Canon Lens Discounts Canon Lens Discounts

New discounts on Canon lenses at B&H:

 

 

 

 

 

October 10, 2013
Posted in Reviews

Canon EOS 70D Sample Shots with Sigma 18-35mm f/1.8 (and other Canon lenses)

EOS 70D Sample Shots

dc.watch.impress (translated) posted a set of samples shot with the Canon EOS 70D and various lenses, among them the awesome Sigma 18-35mm f/1.8 DC HSM (price & specs). The other lenses are the EF-S 10-22mm f/3.5-4.5 (price & specs), the EF 8-15mm f4L Fisheye (price & specs), and the EF 70-200 f/4L IS (price & specs). I was particularly curious to see the performance of the Sigma 18-35mm with the 70D – not bad at all! :)

EOS 70D Sample ShotsEOS 70D Sample Shots

 

November 21, 2012
Posted in Rumors

Latest Canon EF-S Lenses And EOS 7D Mark II Rumors

Canon Rumors reports that Canon

has plans to introduce new EF-S lenses in the first couple of quarters of 2013. There will be a new push on the crop segment of the EOS lineup and new lenses are going to be a part of that revival. A few lenses are mentioned as highly probable and will appear alongside a new “pro” APS-C camera, currently expected to be the EOS 7D Mark II.

The rumored lenses are:

Moreover, delays in lens production are named, caused by new manufacturing technologies introduced by Canon in their factories.

Finally, the EOS 7D Mark II rumor got another mention, and the Rebel T3/EOS 1100D and the EOS 60D are said to get discontinued (see the rumor we posted a few weeks ago) with no imminent replacement planed.

[via CR]

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