Patent: A New Canon EF 300mm f/2.8L IS

[Canon Rumors]

<p><a href="http://www.canonrumors.com/canon-ef-600mm-f4-do-is-to-arrive-in-late-2017-cr2/">We posted a couple of days ago</a> that Canon was well into the development of new “big white” lenses. The first patent for a new optical formula has appeared for an EF 300mm f/2.8L IS.</p>
<p>Patent Publication No. 2016-173439 (Google Translated)</p>
<ul>
<li>Published 2016.9.29</li>
<li>Filing date 2015.3.17</li>
<li>Focal length 292.46</li>
<li>F-number 2.91</li>
<li>Angle of view 4.23</li>
<li>Image height 21.64</li>
<li>Overall length of the lens 273.95</li>
<li>BF 60.81</li>
</ul>
<p>We don’t expect to see the supertelephoto lenses updated until at least 2018.</p>
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[AdamFichna]

I'm wondering what they are going to improve

 

[candyman]

O, this may be the first of all the other supertelephoto lenses?
I guess people will hestitate the coming 3 to 5 years to buy the current supertelephoto lenses. On the other hand, knowing Canon, these new lenses will be presented with a much higher price. So maybe the current supertelephoto start to look like a bargain :-X

 

[GMCPhotographics]

I'm wondering what they are going to improve

Yes..I have wondered that too...what benefits will this lens bring? It's already the lightest in it's genre and it's incredibly sharp. I think there is more mileage in developing lighter longer lenses like the 400 f2.8 and 600 f4. But I guess they have to start some where. I would have thought lenses like the 200 f2 would see a redesign first.

 

[AdamFichna]

I'm wondering what they are going to improve

Yes..I have wondered that too...what benefits will this lens bring? It's already the lightest in it's genre and it's incredibly sharp. I think there is more mileage in developing lighter longer lenses like the 400 f2.8 and 600 f4. But I guess they have to start some where. I would have thought lenses like the 200 f2 would see a redesign first.

I think they should make 300/2.8 with build in x1.4 Tc maybe then I will sell my 300/2.8 IS II and buy the new one

 

[Alex_M]

"... According to the present invention, at the telephoto lens, a cemented lens and a non-spherical surface consisting of a glass material having an anomalous dispersion characteristic that used in the appropriate refractive power where appropriate, in the chromatic aberration of the correction and the entire optical system it is possible to achieve both of the reduction in size and weight to provide an optical system that has been made..."

I'm wondering what they are going to improve

 

[CanoKnight]

How many of these do we need.

 

[candyman]

I'm wondering what they are going to improve

Yes..I have wondered that too...what benefits will this lens bring? It's already the lightest in it's genre and it's incredibly sharp. I think there is more mileage in developing lighter longer lenses like the 400 f2.8 and 600 f4. But I guess they have to start some where. I would have thought lenses like the 200 f2 would see a redesign first.

Maybe support for a new type of AF system that Canon may release in future cameras. And, what about the increasement of mpix?

 

[Maximilian]

I'm wondering what they are going to improve

It will be interesting to see how they can improve something optically so close to "perfect".
Mechanics, AF and IS can be updated all the time.

 

[arcer]

Looks like the size will be 229 x 100mm for the optical design.
My guess that it will be 232 x 112mm for the real thing.
Compared with the current EF 300 f/2.8L IS II USM is 248 x 128mm.

Looks like we will be seeing a few deductions in both length and weight. Maybe we will see the inclusion of BR which can help optimize the formula?

Correct me if I'm wrong, it's my first time posting my own calculations.

 

[Alex_M]

It seems that size and weight reduction is the primary goal. It's either cost reduction excercise or.. To support a better overal weight distribution and/or balance when attached to a significantly smaller body. FF MILC, for an instance.

 

[Steve Dmark2]

Maybe they Design new Converters to. Mark lV i mean. And the Same as with The current Version The might build this lens along with The Converter. I Hope that The also Design along The 300mm f4...

 

[arcer]

Actually, I'm looking forward to a new 300F4 IS more.
FWIW, I've been seeing the 300F4 IS out of stock on Canon HK for quite a while already.

Edit: So is the 200F2..... Maybe we might see a refresh for it first before the 300mm. IMO, based on typical Canon market cycles, 2018 might be another Year of the Lens.

 

[GMCPhotographics]

While I recognise that the 300mm /f2.8 is a cash cow for Canon...it's not the first lens I would turn to for a weight reduction. There are other big whites that are a lot heavier and larger that would take a percentile weight reduction a lot better. The current 300 f2.8 LIS II is very light already. I see a lot of guys at wildlife shoots with one and a few teleconverters. It's a very light and usable rig....comparatively. If it becomes too light then what's the point of the 400mm DO II?

 

[mitchel2002]

very interested in this
i think there are other lens to be updated first like the 200 2
maybe we will start seeing built in 1.4 extenders in all big whites

 

[Chaitanya]

I would much rather like to see new macro lens replacing prehistoric: EF 50mm Compact macro with EF 60mm USM (IF) macro or update to EF 180mm USM with EF 180mm USM IS macro. After bad experience with Sigma 150mm OS I dont would much rather get both those lenses from Canon for my butterflies, flowers, frogs and venomous snakes.

 

[Dylan777]

The improvement on this lens is somehow making it cheaper and lighter....IQ wise, there is no room to improve.

 

[Vern]

I'm wondering what they are going to improve

Yes..I have wondered that too...what benefits will this lens bring? It's already the lightest in it's genre and it's incredibly sharp. I think there is more mileage in developing lighter longer lenses like the 400 f2.8 and 600 f4. But I guess they have to start some where. I would have thought lenses like the 200 f2 would see a redesign first.

Yes! and make it a 200 1.8 with all the latest optics and IS, that would be exciting.

 

[KiagiJ]

Well I hope the 200 f2 isn't in the lineup for an update as I only just got it this year! haha. It's 8 years since release and the 1 before it (200 f1.8 ) was 20 years before then so I was hoping mine was good for another 12 years! They seem to update the 300 and particularly the 400 2.8 way more often so I may be safe a while

 

[mnclayshooter]

LCD range window upgrade??? Anyone? Anyone?