Patent: New Canon Teleconverters

Canon Rumors Guy

EOS 1D MK II
Jul 20, 2010
7,534
289
Canada
www.canonrumors.com
HTML:
Northlight has found a <a href="http://pdfaiw.uspto.gov/.aiw?PageNum=0&docid=20180095255">USPTO</a> patent showing new Canon teleconverters in development.</p>
<p>Three different teleconverters are mentioned:</p>
<ul>
<li>TC 1.4x</li>
<li>TC 1.8x</li>
<li>TC 2.0x</li>
</ul>
<p><a href="https://www.canonnews.com/canon-patent-application-new-teleconverters">Canon News</a> has also uncovered the teleconverter patent in Japan. Japan Patent Application 2018-54991</p>
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Talys

Canon 6DII
Feb 16, 2017
2,052
317
Vancouver, BC
Well, that's interesting. I wonder how the 1.4 and 2x are different from the current ones? The current 1.4 is very good, optically.

1.8x could be very enticing.
 

Don Haines

Beware of cats with laser eyes!
Jun 4, 2012
7,950
1,336
Canada
What about the rarely seen 3X teleconverter?

Has anyone made one in the last 30 years?
 

padam

EOS 7D MK II
Aug 26, 2015
541
191
Talys said:
Well, that's interesting. I wonder how the 1.4 and 2x are different from the current ones? The current 1.4 is very good, optically.

1.8x could be very enticing.
It is mainly destined for the upcoming newer generation tele lenses, they should match better together.

Of course it may be slightly better than the older ones but the gain should be more noticeable with those.
 

NancyP

EOS 6D MK II
Dec 17, 2013
1,297
14
3X teleconverters were never worthwhile in the film days - too much image degradation. That said, there have been people who stack teleconverters with spacers in order to get "any" image, however suboptimal.