/1ds mark IV
Patent: EF-M 9-17mm f/3.5-5 STM

Patent: EF-M 9-17mm f/3.5-5 STM

By Canon Rumors | May 23, 2016 | Canon Lens Rumors

Another EF-M optical formula patent has appeared, this time for a EF-M 9-17mm f/3.5-5 STM. The front element on the lens is quite interesting going by the image above.

Patent Publication No. 2016-85259 (Google translated)

  • Published 2016.5.19
  • A wish day 2014.10.23
  • Zoom ratio 1.79
  • Focus distance 9.27 13.32 16.58
  • F-number 3.60 4.38 5.11
  • AOV 51.83 45.17 38.94
  • Like high 11.79 13.40 13.40
  • Overall length of the lens 85.22 79.65 81.94
  • BF 14.99 16.82 15.41

As with all of the EF-M patents, this is for a crop camera and we believe that the next EOS M body announced will be APS-C as well.

Canon EOS 5D Mark IV Being Tested by Photographers

Canon EOS 5D Mark IV Being Tested by Photographers

By Canon Rumors | May 22, 2016 | Canon DSLR Rumors

We’re told that “more than a few” Canon preferred photographers have been out testing the EOS 5D Mark IV recently ahead of the expected August announcement. This should tell us that the camera hardware specifications have been finalized and the software remains the final piece of the puzzle to tweak and improve.

While solid specifications remain difficult to come by, we were told a few things about the video features of the camera.

  • Internal 4K confirmed (again)
  • 120fps @ 1080p confirmed

We couldn’t get confirmation on 4K @ 60fps, but if the camera is going to use CFast 2.0 as has been rumoured, I think this will be a likely feature. Canon seems to be putting some marketing dollars behind 4K frame grab photography, as they had some presentations on the technique at NAB this past April.

We’re also very interested to know if this DSLR will be the first to get DIGIC 7, which is currently only available in the PowerShot G7 X II.

Has the Sigma 85mm f/1.4 DG HSM Production Come to an End?

Has the Sigma 85mm f/1.4 DG HSM Production Come to an End?

By Canon Rumors | May 20, 2016 | Third Party Lenses

A Tokyo based camera store seems to be reporting that production of the Sigma 85mm f/1.4 DG HSM has ended.

Might we finally see the lens everyone has been waiting for, an 85mm f/1.4 DG HSM Art?

We haven’t been told this directly by anyone, but we’re definitely hoping that it turns out to be true.

More to come we hope…

Patent: Canon EF 28-560mm f/2.8-5.6

Patent: Canon EF 28-560mm f/2.8-5.6

By Canon Rumors | May 20, 2016 | Canon Patents

A patent for a super zoom optical formula from Canon has appeared. We heard a few months ago that Canon was working on a replacement for the EF 28-300 f/3.5-5.6L IS. This optical formula is for a truly impressive EF 28-560mm f/2.8-5.6 super zoom. The likelihood of such a product? I’m not sure, as the lens would be quite large in size.

Patent Publication No. 2016-80973 (Google Translated)

  • Published 2016.5.16
  • Filing date 2014.10.21
  • Zoom ratio 18.78
  • Focal length 28.80 139.49 540.91
  • F-number 2.88 4.77 5.88
  • Half angle of view (degrees) 36.91 8.82 2.29
  • Image height 21.64
  • The total lens length 298.13 341.13 398.13
  • BF 44.99 76.94 116.58

I looked a few times to make sure this idea wasn’t for a smaller sensor PowerShot camera, which it isn’t. This is for a full frame DSLR.

How To Fix Weird Visual Behaviour When Pairing the EOS-1D X Mark II & Sigma Lenses

How To Fix Weird Visual Behaviour When Pairing the EOS-1D X Mark II & Sigma Lenses

By Canon Rumors | May 20, 2016 | Canon DSLR News

A few years ago, very few people would be pairing a flagship Canon DSLR with Sigma lenses, but this has all changed with the change in direction Sigma has taken with their Art and Sports series lenses.

That said, there appears to be an issue with the Canon EOS-1D X Mark II and Sigma lenses when paired together, you see in the image above the type of visual defect we’re talking about. It appears the Canon EOS-1D X Mark II is attempting to correct vignetting and other characteristics of the Sigma lens attached. As you can see, it’s not doing a very good job.

To correct this issue do the following.

  • Navigate to red menu 1 and locate Lens abberation correction
  • Turn Peripheral illum corr to OFF

This should solve your issues so you can get back to enjoying your EOS-1D X Mark II and excellent Sigma lenses.

image credit // SLRLounge

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