Patent: Canon EF 35mm f/1.4L II

[zim]

Big lens , maybe it's not a new 35 1.4, maybe its a new 135 1.4!

 

[exquisitor]

I started with "140mm is very big" but perhaps the translation is misleading. Comparing the Canon lens arrangement with the Sigma ones I see no difference in the physical size if you take into account that f/1.4 is somewhat smaller for a 35mm focal length.

Perhaps the 140mm are measured from the outer front lens surface to the image plane - resulting in a net lens length incl. case of roughly 100mm which is not as intimidating than the 140mm ...

Hopefully... But could be true. Previous patented 35 f/1.4 designs were also in the 125-130 mm range. It is difficult too compare the size from the sketch only, with the similar arrangement Canon lens could be bigger for example to reduce vignetting and improve corner performance.

I wasn't very precise with my arguments. I will try again
The ratio of apertures between 1.4 35 and 1.4 50 is 35:50 or 0.7 . For similar lens formulae you can
scale both images to match both apertures for this ratio.
Measuring the corresponding distances in both images show me that the distance from first lens surface
last lens surface of the Canon patent is only 80% is only slightly larger (~10%) of that of the Sigma lens.
So there is a good chance that the lens is actually smaller than similar to the Sigma (depending on the lens chassis).

I think you right. I've checked another Canon patents and the length of the lens obviously means the distance from the front lens to the focus plane of image circle. So the real lens length in this case would be around 100 mm as you already mentioned.

 

[Viggo]

I like Canon the best when they go all in, no compromise, just as awesome as possible. If they make a 50 f1.2 L II the size of the 70-200 II to make it epic sharp into the corners and extremely well corrected, I'll be first in line. Same with the 35 L II, it can be bigger than the 85 L II if it's superb optically and killer AF.

 

[can0nfan2379]

I like Canon the best when they go all in, no compromise, just as awesome as possible. If they make a 50 f1.2 L II the size of the 70-200 II to make it epic sharp into the corners and extremely well corrected, I'll be first in line. Same with the 35 L II, it can be bigger than the 85 L II if it's superb optically and killer AF.

+1 I don't care if it's big and heavy as long as it delivers epic performance

 

[K]

The 35mm II interests me only because if and when it comes out, the 1st generation 35mm L will drop in price and perhaps I can find a better deal on it.

;D

 

[3kramd5]

Wow! Someone that values sharpness corner to corner over magic bokeh and creamy images that comes from lack of image detail in the corners. Wonders will never cease here on CR.

I bet you more people would desire sharpness edge to edge than intentional softening aberrations. Worth a poll?

 

[Loswr]

I think you right. I've checked another Canon patents and the length of the lens obviously means the distance from the front lens to the focus plane of image circle. So the real lens length in this case would be around 100 mm as you already mentioned.

That makes sense when you consider what is actually being patented – an optical design, not an actual lens.

 

[can0nfan2379]

I like Canon the best when they go all in, no compromise, just as awesome as possible. If they make a 50 f1.2 L II the size of the 70-200 II to make it epic sharp into the corners and extremely well corrected, I'll be first in line. Same with the 35 L II, it can be bigger than the 85 L II if it's superb optically and killer AF.

Wow! Someone that values sharpness corner to corner over magic bokeh and creamy images that comes from lack of image detail in the corners. Wonders will never cease here on CR.

I don't think the two parameters (creamy bokeh & sharpness) are mutually exclusive.........my 135 APO is blisteringly sharp and has creamy bokeh at the same time.

 

[Viggo]

I like Canon the best when they go all in, no compromise, just as awesome as possible. If they make a 50 f1.2 L II the size of the 70-200 II to make it epic sharp into the corners and extremely well corrected, I'll be first in line. Same with the 35 L II, it can be bigger than the 85 L II if it's superb optically and killer AF.

Wow! Someone that values sharpness corner to corner over magic bokeh and creamy images that comes from lack of image detail in the corners. Wonders will never cease here on CR.

I don't think the two parameters (creamy bokeh & sharpness) are mutually exclusive.........my 135 APO is blisteringly sharp and has creamy bokeh at the same time.

+1, I own the 200 f2 and it has the best bokeh, and the sharpness wide open is the best I have ever seen. Zero distortion and no aberations that my colorblind self can see.