June 11, 2013
Tags:
Posted in patents

Canon Patent: 85mm f/1.2, 85mm f/1.8, 135mm f/2, 50mm f/1.4

Canon Patent

50mm f/1.4

Canon Patent

135mm f/2

Canon Patent

85mm f/1.8

Canon Patent

85mm f/1.2

Egami (translated) spotted new patents for lenses filed by Canon: 85mm f/1.2, 85mm f/1.8, 135mm f/2 and 50mm f/1.4.

  • Patent Publication No. 2013-114133
    • Publication date 2013.6.10
    • Filing date 2011.11.30
  • Example
    embodiment
    Focal length Fno. The overall length of the lens BF Lens constitution
    One 85.00 1.24 122.56 38.35 10 pieces of six groups
    Two 83.30 1.80 116.11 39.11 10 sheets in 7 groups
    Three 132.30 2.06 162.67 43.23 10 sheets in 7 groups
    Four 51.70 1.41 87.84 38.94 7 group nine

    Image height Y = 21.64mm

  • Factors that chromatic aberration of magnification chromatic aberration or axial chromatic aberration occurs
    • Reducing the total length
    • Focal length for a long time
  • Glass material Abbe number 70-90, of 1.4-1.5 refractive index
    • Possible correction of axial chromatic aberration
    • Must increase a curvature, spherical aberration and curvature of field is generated
  • Canon patent
    • I use a glass material having an anomalous partial dispersion of the predetermined
    • Consisting of organic and inorganic compound

Performance

[via Egami]

June 11, 2013
Tags:
Posted in Reviews

Tilt-Shift Lens Comparison: Rokinon Tilt-Shift 24mm f/3.5 vs Canon TS-E 24mm f/3.5L II

tilt-shifttilt-shift

Ron Martinsen compared the Rokinon/Samyang/Bower Tilt-Shift 24mm f/3.5 ED AS UMC vs the Canon TS-E 24mm f/3.5L II, two tilt-shift lenses with a huge price difference: around $989 for the Rokinon, $2000 for the Canon. About the Rokinon’s build quality he says: the Rokinon didn’t feel like a cheap lens. It has more substance and quality feel than a typical Canon EF-S lens.

In the conclusion Ron writes:

My overall conclusion was that you have to look pretty hard to see the differences, so the Rokinon impressed me quite a bit. Really all that I could fault the Rokinon for was a seemingly inferior bokeh and the fact that it was a little darker.  Sure, the Rokinon controls are garbage but they work so if you are gentle on your gear it should probably be fine. Image quality wise I’d call it “as good as” Canon.

Be sure to check out Ron’s blog for more samples.

tilt-shift

Rokinon – Practical Shift Test (image courtesy: Ron Martinsen)

tilt-shift

Canon – Practical Shift Test (image courtesy: Ron Martinsen)

Rokinon Tilt-Shift 24mm f/3.5 ED AS UMC price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay
Canon TS-E 24mm f/3.5L II price check: Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay

Product descriptions after the jump.

Read the rest of this entry →

June 11, 2013
Tags: ,
Posted in Reviews

Canon EF 28mm f/2.8 IS and EF 35mm f/2 IS Reviews (The Phoblographer)

EF 28mm

Canon EF 28mm f/2.8 IS USM
Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay

The Phoblographer reviewed both the Canon EF 28mm f/2.8 IS lens (review) and the Canon EF 35mm f/2 IS lens (review). Both reviews come with plenty of sample images.

About the EF 28mm f/2.8 IS:

Canon 28mm f2.8 IS is a stunning lens. It has an excellent build quality, can deliver wonderful images, focuses fast, and is nice and small

About the EF 35mm f/2 IS:

[...] delivers some wonderful image quality, has a solid construction to it, focuses quickly, and is extremely portable.

Canon EF 35mm f/2 IS
Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay

35mm Comparison

June 11, 2013
Tags: ,
Posted in Reviews

Canon Rebel T5i (EOS 700D) In-Depth Review (dpreview)

eos 700d

Canon Rebel T5i/EOS 700D
Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay

Photographic authority dpreview published their in-depth review of the Canon Rebel T5i (EOS 700D). They are not very happy with the hybrid AF performance in live view and video modes. These is what they liked:

  • Comprehensive touchscreen interface that is intuitive and efficient
  • High image quality with good balance between detail and noise reduction in JPEG output
  • Good subject tracking AF in viewfinder shooting mode (compared to mirrorless competition)
  • 5 fps with ample buffering in JPEG-only mode
  • Very responsive operation, with menu access available even when buffer is full
  • Good-looking video output with manual exposure and audio controls
  • Built-in lens correction for vignetting and CA
  • Effective HDR, lowlight and noise reduction multi-exposure modes
  • Wireless strobe triggering via built-in flash
  • Eye sensor to toggle LCD on and off
  • Built-in stereo mics
  • External microphone socket
  • Updated LCD screen minimizes fingerprint smudges from touchscreen use
  • High quality raw converter in software bundle

The Rebel T5i (EOS 700D) got an overall score of 76% and a silver award. The sample pictures gallery is here.

DxOMark tested 130 lenses to see how well they perform on the Rebel T5i.

[via dpreview]

June 11, 2013
Posted in News

Adobe Lightroom 5 Download Version Available For Purchase

Lightroom 5

Adobe Lightroom 5 is available as download at B&H | Adobe

June 10, 2013
Posted in Reviews

Looking for a Lens for Your Rebel T5i (EOS 700D)? – DxOmark Tested 130 Lenses

Rebel T5i

Rebel T5i / EOS 700D
Amazon, B&H, Adorama, Canon USA, J&R, Digitalrev, Borrow Lenses, eBay

If you are lookin for the lens that best fits your new Rebel T5i (EOS 700D), or any other Canon APS-C DSLR, and your photographic needs, then you should head over at DxOMark and have a look at their latest lens review. I mean: 130 lenses tested to see how well they perform on the Canon Rebel T5i/EOS 700D.

Five first ranked primes:

  1. Sigma 85mm F1.4 EX DG HSM
  2. Canon EF 35mm f/2 IS USM
  3. Sigma 35mm F1.4 DG HSM
  4. Canon EF 85mm F1.2L USM
  5. Carl Zeiss Distagon T 35mm f/1.4 ZE

Five first ranked zooms:

  1. Canon EF 24-70mm f/2.8L II USM
  2. Tamron SP 70-200mm F/2.8 Di VC USD
  3. Tamron SP 24-70mm F2.8 Di VC USD
  4. Sigma 50-150mm f/2.8 EX DC APO OS HSM 
  5. Canon EF 70-200mm f/2.8L IS II USM

 

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