Canon patent combining Phase Detect with Light-Field technology for accurate Auto-Focus

Canon Patent Combining Phase Detect With Light-Field Technology For Accurate Auto-Focus

Canon patent that appears to merge Phase Detect with Light-Field technology to improve auto-focus accuracy.

In current Canon Hybrid AF sensors, Phase Detect AF is used to quickly lock AF and Contrast Detect is employed to accurately set focus. The present patent employs Light-Field technology instead of the Contrast Detect part. That’s a cool trick, since Light-Field allows to set the focus after having shot the photo. If I get the patent right, Phase Detect is used to lock AF, and then Light-Field is used for the fine-tuning. This is not the first Canon patent referring to Light-Field technology (1 | 2). Light-Field technology is featured on Lytro cameras.

Will we see this tech on future Canon sensors? Possibly, the question is when.

  • Patent Publication No. 2015-161785
    • Published 2015.9.7
    • Filing date 2014.2.27
  • Canon patents
    • The image plane phase difference AF, the light field I comprises a
    • First, it is focusing on the image plane phase difference AF
    • Then, detect the focus from refocus image
    • To determine the driving range from the re-focus information in the case of out-of-focus
[via Egami]

Canon EOS 70D bundle deal, PRO-100 printer, 32GB, bag – $599 (after $350 MIR)

Canon EOS 70D Bundle Deal, PRO-100 Printer, 32GB, Bag – $599 (after $350 MIR)

BuyDig on eBay (99.3% positive ratings) has a very good EOS 70D bundle deal. The EOS 70D comes bundled with the EF-S 18-55mm IS STM lens, PIXMA Pro-100 photo printer, 32GB memory card, camera bag, photo paper – all on sale for $599 after $350 mail-in rebate.

Tamron SP 35mm f/1.8 Di VC and SP 45mm f/1.8 Di VC video review

Tamron’s new primes captured a lot of attention since they were announced. For a good reason. The SP 35mm f/1.8 Di VC USD and the SP 45mm f/1.8 Di VC USD are affordable, and have weather sealing and image stabilisation. That’s a lot of bang for $599.

In the video above, photographer Dustin Abbott takes a close look at the build quality of the new Tamron primes, the SP 35mm f/1.8 Di VC USD and the SP 45mm f/1.8 Di VC USD, and compares the them with their main competitors. Dustin Abbott posted also an image gallery on his blog.

In the video below, he is examining Tamron’s claims about the lenses’ performance. Do the lenses stand up in real world shooting? Resolution, image stabilization, flare resistance, close focus performance, chromatic aberration control, and autofocus are tested.


[via Dustin Abbott]
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Canon patent for built-in flash with bounce only functionality

canon patent

Hope I got it right. Canon patent for a buit-in flash that can operate as a bounce flash without popping-out the flash. If you just need the bounce effect, there is no need to pop-out the flash, you just have to rotate the light bulb.

  • Patent Publication No. 2015-166789
    • Published 2015.9.24
    • Filing date 2014.3.4
  • Canon patents
    • Rotatable light-emitting part
[via Egami]