Go Back   PhotographyCorner.com Forums > Photography Resources > Photography News

Welcome to the PhotographyCorner.com Forums.

You are currently viewing our forum as a guest which gives you limited access to view most discussions, photographs and access our other FREE features. By joining our free community you will have access to post topics, communicate privately with other members (PM), vote on contests like the Photograph of the Month and Contest Corner Challenges, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact support.

Archive Suite top banner
 
Thread Tools Rate Thread
  #1    Top
Old July 20th, 2016, 12:17 PM
JAshley JAshley is offline
Administrator
Recent Photo: potm5
Silver Commitment Award: This award is given to those who have shown great community dedication & commitment and have over 2,000 posts. - Issue reasonBronze Commitment Award: This award is given to those who have shown great community dedication & commitment and have over 1,000 posts. - Issue reason
Crazy patent: Canon ef 40-800mm f/4.5-5.6

Here’s another one for the “probably never going to get made but WOW” file. A month and a half after Canon patented a massive 1000mm f/5.6 DO lens and two months after the crazy 28-560mm f/2.8-5.6 patent, the company is at it again. This time they’ve patented an EF 40-800mm f/4.5-5.6!




Here’s a crazy optical formula patent from Canon, an EF 40-800mm f/4.5-5.6 superzoom lens. The folks at Egami say it’s for a full frame DSLR and is an internal zoom lens.

Patent Publication No. 2016-128846:

Published 2016.7.14

Filing date 2015.1.9

Zoom ratio 19.42

Focal length 41.09 92.80 152.20 225.00 797.99

F-number 4.67 4.66 4.65 4.67 5.71

Angle of view 27.79 13.13 8.10 5.50 1.55

Image height 21.65

Overall length of the lens 489.32

BF 39.28

Inner zoom
Sponsors
Go Back   PhotographyCorner.com Forums > Photography Resources > Photography News




Bookmarks

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Canon Files Patent for Impressive EF 28-560mm f/2.8-5.6 Lens JAshley Lenses & Accessories (Film & Digital) 0 May 20th, 2016 09:32 AM
Bluey @ 800mm gjtoth Things 4 May 6th, 2012 12:35 PM
Real Photo Advice: The Nikon 600mm vs. Sigma 300mm-800mm Showdown Tim L. Walker The Corner Blog 0 January 25th, 2011 03:14 PM
Review: Canon 800mm f/5.6L IS USM Corner Reporter Photography News 0 November 6th, 2008 07:31 PM
Canon patent details biometric watermarking Corner Reporter Photography News 0 February 12th, 2008 07:41 PM


All times are GMT -5. The time now is 09:02 PM.

Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.