[Patent] Canon Files Patent For A New 35mm f/1.4 Prime Lens

Egami (machine translated) spotted a new Canon patent. This time it is for a 35mm f/1.4 prime lens. The existing EF 35mm was released in 1998, so it makes sense for Canon to work on a new release of this lens. According to Egami, it looks as if Canon has been working since four years on this lens.

Details (machine translated):

  • Patent Publication No. 2012-123155
    • 2012.6.28 Release Date
    • 2010.12.8 filing date
  • Example 1
    • Focal length f = 34.73mm
    • Fno. 1.45
    • Half angle of 31.92 deg.
    • Image height 21.64mm
    • Length 128.11mm lens
    • 38.48mm back focus
    • An effective diameter of 52.03mm lens
    • Effective diameter aperture 25.52mm
    • Lens Construction 12 elements in 9 groups sheet
    • 2 2 aspherical surface
  • Retrofocus
    • And retro focus lens optical system focal length is shorter than the length of the optical system
    • Increasingly asymmetric refractive power arrangement must be strengthened a negative refractive power of the front group in particular
      • Coma aberration, astigmatism, spherical aberration occurs
    • Order to secure a back focus must be to increase the ratio retro
      • Pettsuvu~aru sum is reduced and off-axis aberration (field curvature, distortion) is worse

 

Samyang Lenses for Canon In Stock at B&H

B&H has four Samyang lenses with Canon mount in stock and ready to ship. These are mechanical things: no AF nor camera controlled aperture, but very good build quality at a decent price. All listed lenses are compatible with the APC-S format. The following lenses are available:


  • Samyang 14mm Ultra Wide-Angle f/2.8 IF ED UMC for $399.00 (click here). Core specs (review):

    • Ultra Wide-Angle 14mm Lens
    • Compatible With Full Frame Cameras
    • Compatible With APS-C Cameras
    • Hybrid Aspherical Lenses — Sharp Images
    • Multi-Layer Coating to Reduce Flare
    • Manual Focus Lens
    • Built-In Petal-Type Lens Hood

 


  • Samyang 85mm f/1.4 Aspherical Lens at $299.00 (click here). Core specifications (review):

    • Telephoto Portrait Lens
    • Designed For Full-Frame Cameras
    • Manual Focus
    • Minimum Focusing Distance of 3.3′
    • Hybrid Aspherical Lense — Sharp Images
    • Multi-Layer Coating to Reduce Flare

     

 


  • Samyang 8mm Ultra Wide Angle f/3.5 Fisheye Lens
    at $299.00 (click here). Core specifications (review):

    • Ultra Wide-Angle 8mm Fisheye Lens
    • For APS-C Size Image Formats
    • Hybrid Aspherical Lenses — Sharp Images
    • Multi-Layer Coating to Reduce Flare
    • Minimum Focusing Distance of 12″
    • Built-In Petal-Type Lens Hood

 


  • Samyang 35mm f/1.4 WIDE ANGLE UMC lens at $499.00 (click here). Core specifications (review):

    • 12 elements in 10 groups inc. 1x aspherical & 2 HR elements
    • 8 blades
    • 0.3m min. focus distance
    • 111x83mm
    • 77mm filter size
    • petal-shaped lens hood, bayonet mount