Patent: Canon EF-M 15-45mm f/1.8-3.5

Canon Rumors Guy

EOS 1D MK II
Jul 20, 2010
7,719
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HTML:
A patent showing a faster version of the EF-M 15-45mm has appeared in the form of three separate optical formulas.</p>
<ul>
<li>EF-M 15-45mm f/1.8-3.5</li>
<li>EF-M 15-45mm f/2.0-4.0</li>
<li>EF-M 15-45mm f/2.8-5.0</li>
</ul>
<p><strong><a href="https://www.canonnews.com/some-fast-mirrorless-zoom-patents">Canon News</a> Summarizes:</strong></p>
<blockquote><p>It also looks like it may be the first canon lens patent application that I’ve seen that specifically mentions that distortion abberation control happens in camera versus being controlled by the lens.</p>

<p>This would tend to make more of a compact camera approach as the powershots do this already, however Canon M’s do not.</p>
<p>As with all patent applications that we show, this is a patent application.  This illustrates to us what Canon is looking at in their research labs.  It may or may not become a patent, and may or may not even after that be used in a camera system.</p></blockquote>
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ritholtz

EOS 7D MK II
Mar 25, 2014
577
9
brad-man said:
I would like a constant aperture zoom, but this is a pleasant tease...
I am going to wait until Canon releases this lens to switch it to M series. Common walk around lens similar to 17-50mm f/2.8 with IS is very important. That is exactly what Sony is missing all these years.
 

rrcphoto

EOS 5D MK IV
Jun 20, 2013
2,505
147
brad-man said:
I would like a constant aperture zoom, but this is a pleasant tease...
it is!

I am wondering if canon has set it's own design limits with EF-M lenses. it seems to me very interesting that every single lens, regardless of focal, etc is exactly 61mm in diameter within .1mm.
 

brad-man

Semi-Reactive Member
Jun 6, 2012
1,315
85
S Florida
rrcphoto said:
brad-man said:
I would like a constant aperture zoom, but this is a pleasant tease...
it is!

I am wondering if canon has set it's own design limits with EF-M lenses. it seems to me very interesting that every single lens, regardless of focal, etc is exactly 61mm in diameter within .1mm.
The 61mm "limit" probably has to do with manufacturing economics. Since all M lenses so far (other than the pancake) have been f/3.5 and slower, these new len(s) will break new ground (if they materialize). I doubt an f/1.8 zoom could exist in a 61mm housing. The nifty 50 is around 67mm wide and it don't zoom. But then again, it is full frame...
 

Antono Refa

EOS 6D MK II
Mar 26, 2014
851
130
What's with group G? Are there really two flat elements, one of them right on the image plane?
 

neuroanatomist

I post too Much on Here!!
Jul 21, 2010
24,610
2,072
Chaitanya said:
Finally EF-M might be getting some good zoom lenses.
The M11-22 is very good, better than the EF-S UWA zooms. But I'd certainly be interested in this as a walk around lens.
 

woodman411

EOS 80D
Aug 1, 2017
107
68
USA
I hope this materializes. The current efm 18-55 and 15-45 are underwhelming. To be fair, their market value is less than $150 US, so they are budget class. Would love to see a mid-to-high range zoom in efm-like size, would probably be about 400-500 US dollars if this goes through.
 

AvTvM

EOS 5D MK IV
Nov 4, 2011
3,165
0
not interested in any of the those variable aperture versions. Would prefer a 15-45/2.8 CONSTANT aperture. or even a 15-45/3.5 constant aperture.
 

okaro

EOS 80D
Oct 10, 2015
129
9
AvTvM said:
not interested in any of the those variable aperture versions. Would prefer a 15-45/2.8 CONSTANT aperture. or even a 15-45/3.5 constant aperture.
I do not get why constant aperture should be relevant. Sure having a fast lens is better than just having a constant aperture.

Will they provide software update for cameras to handle the correction? For which models?
 
Mar 14, 2012
2,301
189
AvTvM said:
not interested in any of the those variable aperture versions. Would prefer a 15-45/2.8 CONSTANT aperture. or even a 15-45/3.5 constant aperture.
Set the aperture to of the 15-45 f/1.8-3.5 to f/3.5 and done! Constant aperture ratio!
 

rrcphoto

EOS 5D MK IV
Jun 20, 2013
2,505
147
Chaitanya said:
Finally EF-M might be getting some good zoom lenses.
The Canon EF-M zooms already there sans 15-45 are already good.

outside of speed, the 11-22 and, 55-200, 18-150 are very good. 18-55 as well if you get a good copy.
 

BillB

EOS 6D MK II
May 11, 2017
1,151
386
AvTvM said:
not interested in any of the those variable aperture versions. Would prefer a 15-45/2.8 CONSTANT aperture. or even a 15-45/3.5 constant aperture.
The aging EF-S 17-55 is an example of a constant F2.8 designed for crop coverage and it is not small light or low cost. If you are willing to use it with an adapter, you can put it on your M whenever you want.
 

angrykarl

R, M5
Jul 19, 2017
51
33
Prague
www.flickr.com
Canon Rumors said:
EF-M 15-45mm f/1.8-3.5
If this means something like
  • 15mm, f/1.8
  • 22mm, f/2.0
  • 32mm, f/2.8
  • 45mm, f/3.5

then it's a lens I would pre-order instantly! It would replace two lens I currently use the most (EF-M 22mm 2.0, EF-S 35mm 2.8 ). Just please it's not soft like the current 15-45 and it does not have that stupid collapsible mechanism. :-\
 

privatebydesign

Would you take advice from a cartoons stuffed toy?
Jan 29, 2011
7,907
1,050
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longtallkarl said:
Since I know that Canon is waiting for my input, let me just say, YES PLEASE!
It would definitely push me over the fence to get the M5, but I am less than a squeak, certainly not even a voice, in the thinking of Canon product development. Oh well...
 

brad-man

Semi-Reactive Member
Jun 6, 2012
1,315
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privatebydesign said:
longtallkarl said:
Since I know that Canon is waiting for my input, let me just say, YES PLEASE!
It would definitely push me over the fence to get the M5, but I am less than a squeak, certainly not even a voice, in the thinking of Canon product development. Oh well...
In another thread about EF-M lenses, I defiantly stated that I would not purchase another M product until Canon started to release quicker primes and zooms for the system. Then the Halloween refurb special came and a $637 M5 pushed me over the fence like a Friday night drunk. So much for resolve...