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Patent: Canon EF-S 18-200mm f/3.5-5.6 IS STM

By Canon Rumors | December 30, 2017

Patent: Canon EF-S 18-200mm f/3.5-5.6 IS STM

There has been a lot of patents post lately as the rumor mill has become quiet likely due to the time of year. As most of you know, there is a new patent translating expert on the scene, which is much appreciated. I am personally the worst at reading engineering & legal speak and I welcome having a replacement to the long gone egami blog. Oddly enough, the latest flurry of patents has lead to some sites claiming they post better patents than other sites. Seriously, you can’t make this stuff up. We generally post the optical formula patents, as I cannot answer questions about sensor and processing technology other than to defer you to Canon News and Northlight Images.

The new year kicks off with CES in January, a show Canon generally only announces some PowerShot cameras and maybe some VIXIA camcorders. We’ve also seen some random accessories and printers announced for the show too. The next major show for Canon is CP+ in February held in Yokohama, Japan. Canon usually announces at least one DSLR for that show.

The rumor mill should start picking back up in the coming weeks, as we expect a lot of DSLRs from Canon in 2018.

This latest optical formula patent comes as an EF-S 18-200mm f/3.5-5.6 IS STM, a follow-up to what is probably my least favourite lens in the Canon lineup.

Japan Patent Application 2017-219655:

  • Focal distance: 18.60 49.08  193.00
  • F number: 3.59 4.89 5.88
  • Field angle: 36.29 15.55 4.05
  • Image height: 13.66 13.66 13.66
  • Length of the lens: 145.04 172.07 200.21
  • BF: 38.23 59.69 74.12

Canon would be well served to get this lens to market and fix the ailments that have driven me bonkers with it. Most notably the lens creep, dust accumulation and average optical performance.

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