February 25, 2013
Posted in patents

Canon Patent For Two New Fluorite Treated Lenses

Canon Patent

17-35mm f/2.8-4

Canon Patent

14mm f/2.8

Egami (translated) spotted a patent referring to two new lenses, a 14mm f/2.8 and a 17-35mm f/2.8-4, both with fluorite treatment. According to WIkipedia…:

Fluorite (also called fluorspar) is a halide mineral composed of calcium fluoride, CaF2. It is an isometric mineral with a cubic habit, though octahedral and more complex isometric forms are not uncommon. Crystal twinning is common and adds complexity to the observed crystal habits.


Optically clear transparent fluorite lenses have low dispersion, so lenses made from it exhibit less chromatic aberration, making them valuable in microscopes and telescopes. Fluorite optics are also usable in the far-ultraviolet range where conventional glasses are too absorbent for use.

Click here to see a Canon video about fluorite and lenses.

The patent:

  • Patent Publication No. 2013-37339
    • 2013.2.21 Release Date
    • Filing date 2011.7.12
  • Example 1
    • Zoom ratio 1.00
    • Focal length f = 1.00mm
    • Fno. 2.90
    • Half angle of view ω = 56.66 °
    • Image height Y = 1.52mm
    • 9.51mm length lens
    • BF 2.82mm
    • 6 aspherical surfaces, the first surface 25
    • Punctually
  • Example 3
    • Zoom ratio 2.06
    • 2.06mm – f = 1.00 focal length
    • Fno 2.79 -. 4.00
    • Half angle of view ω = 51.27 – 32.82 °
    • 1.33mm – Y = 1.25 image height
    • 8.55mm – 8.79 length lens
    • BF 2.41 – 3.46mm
    • Aspheric first surface, the fifth surface, the first surface 26
    • Positive and negative positive negative
  • Example 6
    • Zoom ratio 1.00
    • Focal length f = 1.00mm
    • Fno. 2.90
    • Half angle of view ω = 87.35 °
    • Image height Y = 21.60mm
    • 9.51mm length lens
    • BF 2.82mm
    • 6 aspherical surfaces, the first surface 25
    • Punctually
February 24, 2013
Posted in Rumors

Possible Next EOS M Specifications Leaked (24MP, Better AF, Viewfinder, $999)

Next EOS M Specifications

We know that Canon is most probably working on a successor of the not so popular Canon EOS M (price & specs). Not so very well selling because of all the bad press it got for the sluggish auto-focus system. Now we have the first possibly next EOS M specifications leaked:

  • 24mp APS-C Sensor
  • New generation AF system
  • Removable Electronic Viewfinder (Very high resolution)
  • Optional grip attachment
  • 5fps
  • Slightly larger than the current EOS M
  • Introduced with 3 more lenses
  • $999 USD

Sounds somewhat like a wish list, but who knows. We know there will be more EF-M lenses. Finally, an entry level EOS M with a price tag of around $500 is also rumored.

Canon EOS M price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay
Canon EF-M 18-55mm f/3.5-5.6 IS STM price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay
Canon EF-M 22mm f/2 STM price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay

[via Canon Rumors]


February 22, 2013
Posted in Deals

Canon EOS C300 $2000 Off For Both Mount Types

EOS C300

The Canon EOS C300 and C300/PL are discounted to $13,999 at B&H (click here) and Adorama (click here).

Product description (taken from Adorama’s product page):

Bringing Canon’s expertise and decades of experience designing sensors, lenses, image processing and design to the world of motion picture capture, the EOS C300 camera has been designed to meet the demanding needs of cinema industry professionals, providing a modular, portable and eminently adaptable system of cameras, lenses and accessories built for moviemaking in the 21st century.

Featuring a unique Super 35mm Canon CMOS sensor, revolutionary Canon DIGIC DV III Image Processor and 50 Mbps 4:2:2 codec, the EOS C300 provides outstanding cinema quality movie capture. Compact, modular and compatible with Canon’s existing line-up of EF and new EF Cinema lenses as well as accessories from third parties, the stunningly simple to operate EOS C300 is designed to please cinematographers for any production large and small, on location or in the studio, from shoestring to Hollywood budgets.

The EOS C300 has a Canon EF lens mount and is compatible with all of Canon’s new EF Cinema lenses and current EF lenses, including compact primes, super telephotos, specialty tilt-shift, macro and fisheye – over 60 in all. Designed with SMPTE HD production standards, its MPEG-2 codec is an internationally recognized standard compatible with major NLE applications while additional features such as Canon Log ensure seamless integration with existing production workflows, making post-production easy. And with an entire support infrastructure designed to help you get the most from your equipment before, during and after production, the EOS C300 is ready to go to work.


February 22, 2013
Posted in Deals

Deal: Canon EF 50mm f/1.8 II For $94

Canon EF 50mm

B&H has imported Canon EF 50mm f/1.8 II prime lenses for $94 (click here). Price shows up after having added the item to the cart.

February 22, 2013
Posted in News

A Bit Of Everything (EOS M, EF 85mm, EOS-1D C, And More)

February 21, 2013
Posted in Deals

UPDATE – Deal: Sigma 30mm f/1.4 Plus 32GB Sony SDHC Class 10 Card For $309

 Sigma 30mm f/1.4

Update: B&H has the Sigma 30mm f/1.4 EX DC HSM without the memory card for $289 (click here).

Nice deal by top rated eBay seller buydig (110765 ratings, 99.5% positive): brand new Sigma 30mm f/1.4 EX DC HSM lens plus a 32GB Sony SDHC Class 10 memory card for $309 (click here). Free shipping and USA warranty.

Product description:

This large aperture 30mm F1.4 EX DC HSM lens is designed to match the APS-C size image sensors of digital SLR cameras. Two SLD glass elements are especially effective in the compensation of magnification chromatic aberration. Glass mold aspherical lens at rear group of lens reduces color aberration and provides high-quality image results. From 40cm (15.7″) minimum focusing distance to infinity, this lens creates very sharp images with high contrast. The HSM models provide quiet high-speed auto-focus shooting, as well as full-time manual focus. Large Maximum Aperture of F1.4 can perform superbly in a great range of applications, including snapshots, portraiture, indoor shooting and landscape photography.


  • Large Maximum Aperture of F1.4
  • The most appropriate coating for digital SLR cameras
  • Two SLD (Special Low Dispersion) glass elements and an hybrid aspherical lens, provides the utmost correction for all types of aberrations
  • Equipped with HSM (Hyper Sonic Motor) system
  • This large aperture standard lens was exclusively designed for digital SLR cameras featuring APS-C size image sensor

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