Patent: Canon 18-105mm f/4-5.6 With Built-in Telconverter, But With a Twist.

[Canon Rumors]

Here’s a patent we missed that appeared in Japan and was reported by <a href="http://www.northlight-images.co.uk/canon-ef-lenses-rumours-and-news/">Northlight Images</a>. This is a 18-105mm f/4-5.6 With Built-in Telconverter, which isn’t a big departure, expect that the TC is to make the wide angle, wider!</p>
<p>At 18mm, the lens is f/4, but with the TC engaged, the lens becomes a 15mm f/3.3.</p>
<p><strong>Normal use</strong></p>
<ul>
<li>Focal length 18.40 37.44 104.0</li>
<li>Aperture 4.00 4.64 5.89</li>
<li>Half angle of view ω (degree) 36.59 20.04 7.48</li>
<li>Image height 13.66 13.66 13.66 (APS-C)</li>
<li>Lens total length 149.30 165.77 191.31</li>
</ul>
<p><strong>Wide-angle TC added</strong></p>
<ul>
<li>Focal length 15.40</li>
<li>Aperture 3.35</li>
<li>Half angle of view ω (degree) 41.57</li>
<li>Image height 13.66</li>
<li>Lens total length 149.30</li>
</ul>
<p>This is definitely an interesting concept and it’s likely we’re going to see some pretty innovating lens designs from Canon in the future.</p>
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[rrcphoto]

thats... kind of cool.

 

[ajfotofilmagem]

Having the 15mm F3.3 option on an 18-105mm lens is really cool as long as the picture quality does not suffer much. But could it activate the converter, just spinning?

 

[Don Haines]

With innovation like that, CANON IS DOOMED!

 

[Keith_Reeder]

Uuuummm...

Cool and all - but wrong forum?

 

[James Larsen]

That's quite interesting. This is pretty cool, but to be honest I'd rather see them work on getting some better video into their DSLR's instead of working on kinda cool but kinda random lenses that probably won't do super great...unless this is an EF mount? If it's EF-S then it'll be just another boring lens...

 

[chrysoberyl]

With innovation like that, CANON IS DOOMED!

Exactly my feeling, especially the sarcasm!

And I see that once again, Canon is not developing according to everyone's priorities.

 

[9VIII]

If flipping a TC around gets you the best Zoom lens formula, I'm all for it.
Most zoom lenses are pretty weak on the wide end.

 

[Mt Spokane Photography]

Normally, TC's do not work well with a 6:1 super zoom, the lens imperfections get magnified. But a TC that makes the image wider may not have that same effect.

 

[Antono Refa]

With innovation like that, CANON IS DOOMED!

Well placed cynicism.

Nikon released a fisheye zoom & ultra wide tilt shift lenses 7 years after Canon, and Canon's TS-E is wider, and people note how interesting and innovating the fisheye zoom is.

Canon released an ultra wide zoom (the EF 11-24mm) 8 years after Nikon (the 14-24mm), which is the widest rectilinear lens ever, and during which time there was a 3rd party ultra wide zoom (the Sigma 12-24mm), and people say Canon is conservative, and late to respond to the competition.

And people keep saying the same S___ even after the facts are presented.

Same thing when Laowa released a 2x macro lens. It's so innovative of Laowa to present a >1:1 macro, even though canon makes a 5x macro for nearly 20 years.
________________________________________________________________________________________

Edit: Voightlander makes a 10mm f/5.6 lens for Sony E mount, so Canon's EF 11-24mm is the widest rectilinear lens ever. It still proof of innovation, though.

 

[Markus D]

Why not make a 15 - 105 to start with?

 

[LonelyBoy]

And people keep saying the same S___ even after the facts are presented.

Yeah, it's a good thing Canon doesn't read forums, because the engineers would probably get depressed and quit making awesome things if they knew what half the world seems to think of their work.

 

[e_honda]

This sounds pretty nice, but most likely it's going to be for crop.

18-105 just doesn't sound like a FF zoom range.

 

[Mt Spokane Photography]

Yeah, it's a good thing Canon doesn't read forums, because the engineers would probably get depressed and quit making awesome things if they knew what half the world seems to think of their work.

Who told you that? Just because they do not post as Canon does not mean they don't belong to CR and read the forum. They are smart enough to spot trolls just like most of us. Besides, we all have built-in filters that screen out things we don't believe.

 

[LonelyBoy]

This sounds pretty nice, but most likely it's going to be for crop.

18-105 just doesn't sound like a FF zoom range.

The Image Height specifies that it is, in fact, APS-C.

 

[Deleted member 378664]

Shouldn't the converter rather be called a wideconverter instead of a teleconverter?

On the other hand: If you pull it out, you got more tele so it is a teleconverter the other way around.
Would the lens have a zoom range from 15 to 88 with the "wideconverter" applied?

Frank

 

[rrcphoto]

Why not make a 15 - 105 to start with?

much harder to do.

 

[scrup]

So the focal length seems to be for crop.

Now this would be a nice video lens on a full frame for the 4k crop.

 

[Chaitanya]

With innovation like that, CANON IS DOOMED!

Same thing when Laowa released a 2x macro lens. It's so innovative of Laowa to present a >1:1 macro, even though canon makes a 5x macro for nearly 20 years.
________________________________________________________________________________________

Edit: Voightlander makes a 10mm f/5.6 lens for Sony E mount, so Canon's EF 11-24mm is the widest rectilinear lens ever. It still proof of innovation, though.

Canon's MP-E 65 doesnt focus to infinity and its a FF lens while Venus 60mm focuses all the way to infinity from 2x mag and its a APS-C lens. So if you really want to compare Venus then it should be compared to Canon's EF-s 60mm or Tamron's 60mm f2 macro not MP-E 65. Both those lenses Mp-e and Venus fill separate niche for macro photographers.

 

[BurningPlatform]

Shouldn't the converter rather be called a wideconverter instead of a teleconverter?

On the other hand: If you pull it out, you got more tele so it is a teleconverter the other way around.
Would the lens have a zoom range from 15 to 88 with the "wideconverter" applied?

Frank

I guess it could be called a built-in speed booster as well. What is interesting is that it retains the same image height when applied. Makes me think the lens actually has to have a wider than APS-C image circle at the standard wide end.