Search
× Search

News

A flurry of super telephoto patent applications appear
CanonNews
/ Categories: Canon Patents
This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link, without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a coffee.

A flurry of super telephoto patent applications appear

Japan Patent Application 2017-215495

This patent appears to be two fold, lightweight (relatively here!) with a good correction of aberrations such as axis chromatic and chromatic aberrations of due to magnification.  This element design most likely has IS, it's simply not labelled by Canon.

  • 400mm 2.8
  • 300mm 2.8
  • 500mm 4.0

Japan Patent Application 2017-215494

Reduction of chromatic abberrations and secondary spectra (specific type of chromatic aberrations) are reduced in this patent. This element design most likely has IS, it's simply not labelled by Canon.

  • 400mm 2.8
  • 500mm 4.0
  • 600mm 4.0
  • 800mm 5.6

Japan Patent Application 2017-215493

DIfferent technique to reduce aberrations such as axis chromatic and chromatic aberrations of due to magnification.  This element design most likely has IS, it's simply not labelled by Canon.

 

  • 300mm 2.8
  • 400mm 2.8
  • 500mm 4.0
  • 600mm 4.0
  • 800mm 5.6

Japan Patent Application 2017-215492

DIfferent technique to reduce aberrations such as axis chromatic and chromatic aberrations of due to magnification.  This element design most likely has IS, it's simply not labelled by Canon.

  • 300mm 2.8
  • 400mm 2.8
  • 500mm 4.0
  • 600mm 4.0
  • 800mm 5.6

Japan Patent Application 2017-215491

This application changes the element location for focus to reduce weight, and also to reduct chromatic aberrations.  This element design does not have IS, which probably makes it exploritory or defensive in nature.

  • 400mm 2.8
  • 800mm 5.6
  • 200mm 2.0

All of these patent applications do not explicited mention IS.

However in most of canon's lens designs, this element grouping is the IS group.

On these respective patents, you can clearly see that element group in most of these lens group diagrams on the individual patent applications, it's simply not labelled as IS.

 

 

Previous Article New patent application for a variety of high end APS-C UWA zoom lenses
Next Article Blog (and DCI) muse mount complexity limit the EOS-M and Fuji-X mounts.
Print
blog comments powered by Disqus

Keep In Touch

FacebookTwitterLinkedIn

Our Sponsors

Want to buy me a coffee?

Free Shipping to the USA and Canada*

Use CANONNEWS for $10 off AuroraHDR

Use CANONNEWS for $10 off Luminar

*Conditions may apply

 

Terms Of UsePrivacy Statement© 2020 by CanonNews. This site is not affiliated with Canon Inc. or it's subsidiaries.
Back To Top