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Author Topic: Patents: New 50mm, 85mm & 135mm Lenses  (Read 12925 times)

candyman

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #15 on: June 11, 2013, 11:25:09 AM »
If the New 135L is non-IS, fail.


And no f/1.8 too  >:(
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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #15 on: June 11, 2013, 11:25:09 AM »

tron

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #16 on: June 11, 2013, 11:46:15 AM »
If the New 135L is non-IS, fail.
+1. The current 135L is excellent optically already!

Dylan777

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #17 on: June 11, 2013, 12:00:58 PM »
If the New 135L is non-IS, fail.
+1. The current 135L is excellent optically already!

agree...be able to shoot, handheld @ 1/60 or slower is even better ;)
« Last Edit: June 11, 2013, 12:03:03 PM by Dylan777 »
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Zoom: 16-35L f4 IS -- 24-70L II -- 70-200L f2.8 IS II
Prime: 40mm -- 85L II -- 135L -- 200L f2 IS -- 400L f2.8 IS II

Caps18

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #18 on: June 11, 2013, 05:48:24 PM »
So there is no word on a new 50mm f/1.2L...?

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Mt Spokane Photography

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #19 on: June 11, 2013, 09:20:06 PM »
Yet another patent based on Canon's new DO technology that has yet to be put into production.  Thery carefully avoid the word DO, and talk about particle dispersion in a resin.  The advantages arte substantial if they can actually make it.  It allows for shorter lenses.
 
There is a mixture which distributed the following inorganic oxide nano particles in the synthetic resin as an optical material with the different characteristic from general ** material. There are TiO2 (Nd=2.758, nud=9.54, thetagF=0.76) etc. When TiO2 fine particles are distributed by a volume ratio suitable in a synthetic resin, the optical material with which it is satisfied of a conditional expression (2) is obtained. If it is the material with which it is satisfied of a conditional expression (2), it will not limit to these. 
 [0028]
 TiO2 is a material used for various uses, and it is used as a charge of vacuum evaporation material which constitutes optical thin films, such as an antireflection film, from an optical field. The TiO2 fine particles as [ a photocatalyst, a white pigment, etc. ] and are used for others as a cosmetic material. 
 [0029]
 Considering the influence of dispersion etc., as for the pitch diameter of the fine particles which resin is made to distribute in each working example, 2 nm - about 50 nm are good, and in order to suppress an aggregation, it may add a dispersing agent etc. As a medium material which distributes fine particles, polymer is good and high mass production nature can be acquired by photopolymerization-molding or thermal polymerization molding using a molding die etc. The dispersion property N of the mixture which distributed nano particles (lambda) is easily calculable with the following formula drawn from the formula of Drude known well. 
 [0030]
 Namely, the refractive index N in the wavelength lambda (lambda) 
 N(lambda) = [1+V{Npar(lambda) 2-1}+ {Npoly(lambda) 2-1} (1-V)] 1/2
 It comes out. Here, lambda is a molar fraction of the whole fine particle product [ as opposed to / as opposed to / as opposed to / in any wavelength and Npar / the refractive index of fine particles / in Npoly / the refractive index of polymer / polymer volume in V ]. Thus, the organic composite which distributed fine particles in resin or resin is an optical material which fills a conditional expression (2). 
 [0031]
 The above-mentioned organic composite is used as a material which uses optical inorganic materials, such as glass, as a material which fills the above-mentioned conditional expression (1) with each working example, and fills a conditional expression (2). Thus, when it is a positive lens contained in the 1st lens group L1 in each working example and abnormal portion dispersibility of material is set to deltathetagF, 
 0.0100<deltathetagF 
 At least one of at least two positive lenses to satisfy is the material consisting of an organic composite. At least one consists of inorganic materials. 

Rienzphotoz

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #20 on: June 12, 2013, 01:28:37 AM »
135 f/2.0 with IS would be awesome ... if they do release it, I hope Canon goes easy on its pricing.

RLPhoto will like this rumor. He might wait for BigValue sale though ;D
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ewg963

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #21 on: June 14, 2013, 08:08:13 AM »
Hey I would be in the market for a 50 1.4II   :)
« Last Edit: June 14, 2013, 08:10:15 AM by ewg963 »
5D Mark III, 5D Mark II, 24-105mm 70-200mm 2.8 Non IS, 100-400mm 50mm 1.4, 85mm 1.8, 580EX II, 600EX-RT

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #21 on: June 14, 2013, 08:08:13 AM »

tron

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #22 on: June 14, 2013, 10:01:18 AM »
If the New 135L is non-IS, fail.


And no f/1.8 too  >:(
May I ask if you have anything against a wonderful f/2.0 aperture ?  8)

ddashti

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #23 on: June 14, 2013, 11:22:58 AM »
These have been due for a while now, it's about time!

RLPhoto

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #24 on: June 14, 2013, 11:27:29 AM »
135 f/2.0 with IS would be awesome ... if they do release it, I hope Canon goes easy on its pricing.

RLPhoto will like this rumor. He might wait for BigValue sale though ;D
;D ;D ;D

:|

Its in consideration.

Etienne

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #25 on: June 15, 2013, 11:02:40 PM »
Sharp, great-contrast 50 1.4 with IS and I'm in!

dilbert

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #26 on: June 16, 2013, 01:51:37 AM »
The mechanics are interesting.

The 50/1.4 is 37mm longer than the current 50/1.4.
The 85/1.8 is 45mm longer than the current 85/1.8.

That'll change how well they fit in various people's camera bags but I suppose this is what's required to add image stabilisation to each of these lenses.

sandymandy

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #27 on: June 16, 2013, 04:04:56 AM »
Hope we will finally get a 50mm thats good (not perfect) at everything. At the moment i feel the choice with 50mm lenses is not about the aperture but more about which negative aspects im willing to accept. With all other lenses im looking for the advantage im gaining but not with the 50s.... Feels wrong to me.

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #27 on: June 16, 2013, 04:04:56 AM »

mb66energy

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #28 on: June 16, 2013, 04:07:30 AM »
The mechanics are interesting.

The 50/1.4 is 37mm longer than the current 50/1.4.
The 85/1.8 is 45mm longer than the current 85/1.8.

That'll change how well they fit in various people's camera bags but I suppose this is what's required to add image stabilisation to each of these lenses.

Im not shure that "length of the lens" means the physical length of the real lens assembly - I think it is the length between front surface and the image plane. The values you have calculated are in the region of the flange-sensorplane-distance ...

I have made a simple overlay of the cut views of the current 1.4/50 and the proposed (in the patent) lens. Both scaled to the aperture which should be similar.

I do not see any dramatic difference between both - no IS elements, no retrofocus scheme - just small changes which allow to introduce additional lenses to correct aberrations. So it will not be a reincarnation of the Carl Zeiss 1.4 55mm ...

Best, Michael
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symmar22

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #29 on: June 19, 2013, 05:54:07 AM »
I'd love to see new 50mm 1.4, 85mm 1.8, and 100mm f2, I think there is still some improvement margin on these lenses; however if the 135mm has no IS, I don't really see the point, except for weather sealing. Optics, USM, focusing distance are already top notch.

Would be nice as well to revamp the 20mm 2.8 and 28mm 1.8, as well as to get a modern 50-60mm macro, in order to get a more comprehensible optic range; old style micro motor (50mm macro, 135mm SF), gold ring (20, 28, 50, 85, 100mm), silver ring (24, 28, 35mm IS) and red ring (L lenses), is a bit uneven.

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Re: Patents: New 50mm, 85mm & 135mm Lenses
« Reply #29 on: June 19, 2013, 05:54:07 AM »