Patent: Canon EF 58mm f/1.4
- Thread starter Antono Refa
- Start date
Re: Canon patent for a 58mm f/1.4 seen in photorumors
I'm hopeful that this is the parallel super lens "fifty" L that I'm expecting to compliment the more artful 1.2 "fifty"
Which could end up with....
50mm f1.2 L artful mistress left to age gracefully
58mm f1.4 L new kid bad boy sharply contrasty mega lens to beat Otus
50mm f1.8/2.0 IS running with the 35mm IS theme, the sensible type
50mm f1.8 STM nifty fifty for the experimental types
I'm kinda expecting the 58mm now to cost more than the 50mm f1.2 - which sounds odd, but with the focal length differentiator, Canon can PR themselves around a £2000 f1.4 lens
I'm hopeful that this is the parallel super lens "fifty" L that I'm expecting to compliment the more artful 1.2 "fifty"
Which could end up with....
50mm f1.2 L artful mistress left to age gracefully
58mm f1.4 L new kid bad boy sharply contrasty mega lens to beat Otus
50mm f1.8/2.0 IS running with the 35mm IS theme, the sensible type
50mm f1.8 STM nifty fifty for the experimental types
I'm kinda expecting the 58mm now to cost more than the 50mm f1.2 - which sounds odd, but with the focal length differentiator, Canon can PR themselves around a £2000 f1.4 lens
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
Are there good reasons to choose 58mm over 50mm? You always read that 50mm has such a "natural" viewing angle on FF. So why go slightly but not significantly higher? Or is the "natural viewing angle" more like 58mm but to have a round number always 50mm has been used in the past? Would you even notice for daily work?
Are there good reasons to choose 58mm over 50mm? You always read that 50mm has such a "natural" viewing angle on FF. So why go slightly but not significantly higher? Or is the "natural viewing angle" more like 58mm but to have a round number always 50mm has been used in the past? Would you even notice for daily work?
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
Take the "50mm is natural viewing angle" with a grain of salt.
For starters, the numbers vary anywhere from the sensor's diagonal (= 43.266mm for FF) to 55mm (again, for FF). Then, lenses might have focus breathing, which means the focal length would change based on the focusing distance, and manufacturing inaccuracies. Finally, because it isn't accurate science, manufacturers round focal lengths (and max apertures) a bit, so a 50mm lens might have been designed to be a wee longer or shorter.
[IIRC, it was explained the focal length is accurate only if the lens is focused to infinity. There are others on the forum who can explain this a lot better than me.]
Which answers your last question - people usually don't notice in daily work.
My guess Nikon and Canon have found they can make a better lens (in terms of not only IQ, but weight, price, profit, etc as well) if they make it a few millimeters longer, so they did.
midluk said:
Take the "50mm is natural viewing angle" with a grain of salt.
For starters, the numbers vary anywhere from the sensor's diagonal (= 43.266mm for FF) to 55mm (again, for FF). Then, lenses might have focus breathing, which means the focal length would change based on the focusing distance, and manufacturing inaccuracies. Finally, because it isn't accurate science, manufacturers round focal lengths (and max apertures) a bit, so a 50mm lens might have been designed to be a wee longer or shorter.
[IIRC, it was explained the focal length is accurate only if the lens is focused to infinity. There are others on the forum who can explain this a lot better than me.]
Which answers your last question - people usually don't notice in daily work.
My guess Nikon and Canon have found they can make a better lens (in terms of not only IQ, but weight, price, profit, etc as well) if they make it a few millimeters longer, so they did.
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
Translated link:
http://translate.google.com/translate?sl=auto&tl=en&u=http://egami.blog.so-net.ne.jp/2015-10-02
Patent Publication No. 2015-172611
Published 2015.10.1
Filing date 2014.3.11
Focal length 57.99
F-number 1.45
Half angle (in degrees) 20.46
Image height 21.64
Overall length of the lens 117.64
BF 38.23
Translated link:
http://translate.google.com/translate?sl=auto&tl=en&u=http://egami.blog.so-net.ne.jp/2015-10-02
Patent Publication No. 2015-172611
Published 2015.10.1
Filing date 2014.3.11
Focal length 57.99
F-number 1.45
Half angle (in degrees) 20.46
Image height 21.64
Overall length of the lens 117.64
BF 38.23
Upvote
0
HTML:
<p>A new patent for an EF 58mm f1.4 optical formula has appeared. Nikon currently has a Nikkor 58mm f/1.4G. Could we be getting closer to a replacement for the EF 50mm f/1.4?</p>
<p>Patent Publication No. 2015-172611 (Google Translated)</p>
<ul>
<li>Published 2015.10.1</li>
<li>Filing date 2014.3.11</li>
<li>Focal length 57.99</li>
<li>F-number 1.45</li>
<li>Half angle (in degrees) 20.46</li>
<li>Image height 21.64</li>
<li>Overall length of the lens 117.64</li>
<li>BF 38.23</li>
</ul>
Upvote
0
It is very easy to beat the mediocre (and overpriced) Nikon 58mm, but is difficult to overcome the Sigma 50mm Art. :
Nikon 58mm F1.4
Sigma 50mm F1.4 Art
Nikon 58mm F1.4
Sigma 50mm F1.4 Art
Upvote
0
bertrandG said:
Not for the same subject magnification it doesn't, and surely that is how most people frame their images?
Upvote
0
JonAustin
Telecom / IT consultant and semi-pro photographer
Re: Canon patent for a 58mm f/1.4 seen in photorumors
* This is the lens I'm waiting for, although I'd like it to be faster, and I wouldn't mind if it turns out as a 58mm. (Getting by fine with my 12-year-old 50/2.5 CM in the meantime.)
Haydn1971 said:
* This is the lens I'm waiting for, although I'd like it to be faster, and I wouldn't mind if it turns out as a 58mm. (Getting by fine with my 12-year-old 50/2.5 CM in the meantime.)
Upvote
0
My guess would be that its a potential lens along the same lines as the Nikon 58mm, that lens might be hated by net gearheads but it seems to have become quite popular with portrait shooters, an area Canon has previously been quiet dominant with the 50mm and 85mm F/1.2's.
Perhaps it would make sense for Canon to release a 58mm to cater to that market with smoother bokeh/rendering and then release a 50mm F/1.2 or F/1.4 that goes after Sigma for extreme sharpness?
Perhaps it would make sense for Canon to release a 58mm to cater to that market with smoother bokeh/rendering and then release a 50mm F/1.2 or F/1.4 that goes after Sigma for extreme sharpness?
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
Nikon has a long history of making 58mm lenses. Their famous 58mm f/1.2 Noct AI and AIS for example.
http://www.ebay.com/itm/Nikon-Noct-Nikkor-58mm-f-1-2-AIS-Noctilux-Manual-Focus-A15I0046-/181890773369?hash=item2a5988f179
I can't say why 58mm, but the extra few mm probably makes it easier to increase sharpness and other characteristics of such a wide aperture.
midluk said:
Nikon has a long history of making 58mm lenses. Their famous 58mm f/1.2 Noct AI and AIS for example.
http://www.ebay.com/itm/Nikon-Noct-Nikkor-58mm-f-1-2-AIS-Noctilux-Manual-Focus-A15I0046-/181890773369?hash=item2a5988f179
I can't say why 58mm, but the extra few mm probably makes it easier to increase sharpness and other characteristics of such a wide aperture.
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
What would you like to see improved in the 50mm f/1.2 that serves it's purpose, rather than to make it more like the new uber fifties lenses?
zim said:
What would you like to see improved in the 50mm f/1.2 that serves it's purpose, rather than to make it more like the new uber fifties lenses?
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
Interesting. Pronounced concave meniscus front element. Rarely seen. new Zeiss Milvus 50/1.4 has a bi-concave front element.
http://www.zeiss.at/camera-lenses/de_at/camera_lenses/milvus/milvus1450.html
Is the Canon patent also a floating element design?
rs said:Translated link:
http://translate.google.com/translate?sl=auto&tl=en&u=http://egami.blog.so-net.ne.jp/2015-10-02
Interesting. Pronounced concave meniscus front element. Rarely seen. new Zeiss Milvus 50/1.4 has a bi-concave front element.
http://www.zeiss.at/camera-lenses/de_at/camera_lenses/milvus/milvus1450.html
Is the Canon patent also a floating element design?
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
Canon have an equally long history with the 58mm lens, starting with the R58 f1.2 back in 1962. They carried that through to the FL mount in the 1964 FL58 f1.2 and a MkII version of the same lens in 1966.
In 1968 they changed to a 55mm focal length for their premier '50' and retained the f1.2, which continued into the next generation FD mount in 1971 with the FD55 f1.2 and FD55 f1.2 AL, the later earning the title as the "worlds first interchangeable lens for 35mm SLR employing an aspherical lens element".
In 1973 we got two more 55mm f1.2 lenses, one aspheric and the other not, both with the new for the time S.S.C coatings. The aspheric version got another update in 1975. Indeed it wasn't until the two versions of the New FD 50 f1.2, one an L the other not, that the 55mm focal length was dropped.
I was a heavy user of the FDn 50 f1.2L and looked forwards to the release of the EF version, but I was bitterly disappointed with the EF's performance and although I have used several I never bought one, much preferring the performance of my long lasting EF 50 f1.4.
P.S. I believe the FD55 f1.2 AL was the first, defacto, 'L' lens. The first actual L lens wasn't until the 1978 FD300mm f4L.
Mt Spokane Photography said:
Canon have an equally long history with the 58mm lens, starting with the R58 f1.2 back in 1962. They carried that through to the FL mount in the 1964 FL58 f1.2 and a MkII version of the same lens in 1966.
In 1968 they changed to a 55mm focal length for their premier '50' and retained the f1.2, which continued into the next generation FD mount in 1971 with the FD55 f1.2 and FD55 f1.2 AL, the later earning the title as the "worlds first interchangeable lens for 35mm SLR employing an aspherical lens element".
In 1973 we got two more 55mm f1.2 lenses, one aspheric and the other not, both with the new for the time S.S.C coatings. The aspheric version got another update in 1975. Indeed it wasn't until the two versions of the New FD 50 f1.2, one an L the other not, that the 55mm focal length was dropped.
I was a heavy user of the FDn 50 f1.2L and looked forwards to the release of the EF version, but I was bitterly disappointed with the EF's performance and although I have used several I never bought one, much preferring the performance of my long lasting EF 50 f1.4.
P.S. I believe the FD55 f1.2 AL was the first, defacto, 'L' lens. The first actual L lens wasn't until the 1978 FD300mm f4L.
Upvote
0
Upvote
0
Re: Canon patent for a 58mm f/1.4 seen in photorumors
blue: The EF-M has it too: http://cweb.canon.jp/ef/lineup/ef-m/ef-m22-f2stm/spec.html
and is a fine lens.
red: L1, L2 and L3 are three lens groups which gives the hint that it has floating elements - a standard with modern high aperture wide and standard lenses ...
AvTvM said:rs said:Translated link:
http://translate.google.com/translate?sl=auto&tl=en&u=http://egami.blog.so-net.ne.jp/2015-10-02
Interesting. Pronounced concave meniscus front element. Rarely seen. new Zeiss Milvus 50/1.4 has a bi-concave front element.
http://www.zeiss.at/camera-lenses/de_at/camera_lenses/milvus/milvus1450.html
Is the Canon patent also a floating element design?
blue: The EF-M has it too: http://cweb.canon.jp/ef/lineup/ef-m/ef-m22-f2stm/spec.html
and is a fine lens.
red: L1, L2 and L3 are three lens groups which gives the hint that it has floating elements - a standard with modern high aperture wide and standard lenses ...
Upvote
0
Similar threads
