bobbyz wrote in post #16597002
Just waiting for 135mm f1.8 OS.
Just waiting for 135mm f1.8 OS.
This. F/1.8 with IS sounds far more possible than f/1.4. I'd pay for that within reason.
Sibil Cream of the Crop 10,415 posts Likes: 54444 Joined Jan 2009 Location: SoCal More info | Jan 12, 2014 12:56 | #31 bobbyz wrote in post #16597002 Just waiting for 135mm f1.8 OS. This. F/1.8 with IS sounds far more possible than f/1.4. I'd pay for that within reason.
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frankchn Senior Member 460 posts Likes: 160 Joined Jun 2009 More info | Jan 12, 2014 21:59 | #32 tzalman wrote in post #16599465 In order to be f1.4 a 135 mm lens would need a physical opening of 96.4 mm. That means a barrel of more than 100 mm in diameter. That much glass is going to need a lot of correcting, so a lot of elements. Would Canon also supply a truck to carry it? It would be the same size as a 200 f/2L and at least as heavy and expensive >$6k.
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schlagle Senior Member  571 posts Likes: 12 Joined Feb 2012 Location: San Francisco Bay Area More info | Jan 12, 2014 22:01 | #33 tzalman wrote in post #16599465 In order to be f1.4 a 135 mm lens would need a physical opening of 96.4 mm. That means a barrel of more than 100 mm in diameter. That much glass is going to need a lot of correcting, so a lot of elements. Would Canon also supply a truck to carry it? Lol, the first thing i also thought of was the physics of it. It would be a beast with a DoF that would make us macro folks blush. 5D Mark III | EF 50 ƒ/1.4, EF 24-105L ƒ/4, EF 70-200L ƒ/2.8 IS II, EF 16-35L ƒ/2.8 II, MP-E65, EF 100L ƒ/2.8 IS Macro | 600EX-RT, 320EX, MT-24EX
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vengence Goldmember 2,103 posts Likes: 108 Joined Mar 2013 More info | Jan 12, 2014 22:11 | #34 It would be one hell of a ****ing lens. Don't think it could be made for 4k TBH. That being said, canon would include IS for sure. It would have a small market as it would probably be closer to 10K than 4K, but those who could afford it, would flock to it like mad.
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Jan 12, 2014 22:14 | #35 airfrogusmc wrote in post #16596832 No, I have the 200 2L. I would take a 135L F1.4 over a 200L even if priced the same (assuming F1.4 is as sharp as the 135F2 wide open.. Sony A7siii/A7iv/ZV-1 - FE 24/1.4 - SY 24/2.8 - FE 35/2.8 - FE 50/1.8 - FE 85/1.8 - F 600/5.6 - CZ 100-300 - Tamron 17-28/2.8 - 28-75/2.8 - 28-200 RXD
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Jan 13, 2014 15:21 | #36 OK then what about a 135L 1.2? A7rIII | A7III | 12-24 F4 | 16-35 GM | 28-75 2.8 | 100-400 GM | 12mm 2.8 Fisheye | 35mm 2.8 | 85mm 1.8 | 35A | 85A | 200mm L F2 IS | MC-11
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No. www.zivnuska.zenfolio.com/blog
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pulsar123 Goldmember More info | Jan 13, 2014 19:21 | #38 BTW, such lenses do exist (they were manufactured in 70s). One is true 135mm f1.4 (forgot the brand), the other one Vivitar 1 135mm f1.5. Fully manual, and apparently optics was pretty bad. You can find one for around 2-3 grand. 6D (normal), 6D (full spectrum), Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, 50mm f1.8 STM, Samyang 8mm fisheye, home studio, Fast Stacker
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pulsar123 Goldmember More info | Jan 16, 2014 13:20 | #39 Anyone knows people at Canon? Tell them about this 135mm f1.4 full frame lens design my research code (Random Lens Design) has just discovered, in a purely automatic fashion:  Random Lens Design: 135mm f1.4 lens by syamastro, on FlickrI've been developing the code for a couple of years, and usually do the testing and development on more traditional parameters - like FF 50mm f1.4. But this forum topic made me interested to try to discover a good IQ design for the more exotic 135mm f1.4 lens, and after ~3 days on 9 Tesla GPUs the above design was discovered and optimized. It is big and massive - 175mm length, 950g of pure glass, but actually not too bad compared to 200mm f2.0L - which is 208mm and 2,520g (total weight). It also must be super-expensive to make - all 16 surfaces (for 8 elements) here are aspheric (conic), and 5 elements use expensive glass. The positives: it has the same or better MTF curves as 135L and 200mm f2.0L, wide open. As far as I know, all past designs of 135mm f1.4 photography lenses had very poor resolution wide open. So this design could be a unique one. People collected large sums of money at kickstarter to make an ancient Petzval lens design . Perhaps the above 135mm f1.4 design would be a much more interesting project?  6D (normal), 6D (full spectrum), Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, 50mm f1.8 STM, Samyang 8mm fisheye, home studio, Fast Stacker
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tagnal Goldmember 1,255 posts Likes: 64 Joined Aug 2010 Location: Bay Area, CA More info | Jan 16, 2014 14:26 | #40 |
ZoneV Goldmember More info | Jan 16, 2014 14:31 | #41 135mm/1.4 or faster sounds very interesting! pulsar123 wrote in post #16610737 ... The positives: it has the same or better MTF curves as 135L and 200mm f2.0L, wide open. As far as I know, all past designs of 135mm f1.4 photography lenses had very poor resolution wide open. So this design could be a unique one. .. Did you make a tolerance analysis? Could it be build in normal optical assembly factories? Second and 8. lens elements looks pretty thin - is this really easy enough to build? DIY-Homepage
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pulsar123 Goldmember More info | Jan 16, 2014 14:47 | #42 ZoneV wrote in post #16610902 135mm/1.4 or faster sounds very interesting! But not as AF lens Currently I try to get such a lens, but not on EF 200/2 IQ level, more for the short DOF effect. Before Christmas I had my first more or less working setup. But with very low IQ and restricted working distances. Did you make a tolerance analysis? Could it be build in normal optical assembly factories? Second and 8. lens elements looks pretty thin - is this really easy enough to build? 11. surface - the plane one - could create a hot spot reflection? Did you make a ghosting analysis? Very valid points! No, my code is not advanced enough to optimize things like flares, and doesn't have all the manufacturing constraints (I am working on this right now - will set the maximum aspect ratio for the elements at say 10; right now it is simply 1mm for the minimum center thickness). The code strength is not in the ability to produce a ready-to-manufacture designs - it will probably never do that - but in its ability to spit out fully optimized automatically discovered (no human intervention) designs from scratch (no prior designs are used as a first guess), given enough of computing power. So one run actually produces a bunch of good designs, and then one can cherry pick them, using off-the-shelf lens design packages, which measure everything you need to know to manufacture the design (flare etc). 6D (normal), 6D (full spectrum), Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, 50mm f1.8 STM, Samyang 8mm fisheye, home studio, Fast Stacker
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A7rIII | A7III | 12-24 F4 | 16-35 GM | 28-75 2.8 | 100-400 GM | 12mm 2.8 Fisheye | 35mm 2.8 | 85mm 1.8 | 35A | 85A | 200mm L F2 IS | MC-11
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amfoto1 Cream of the Crop 10,331 posts Likes: 146 Joined Aug 2007 Location: San Jose, California More info | Jan 16, 2014 19:05 | #44 A 135mm f1.4 lens would need to have a 96mm diameter max aperture. To accomodate that, the lens would need to be about the size of the 200/2L IS. Alan Myers
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Jan 16, 2014 20:26 | #45 amfoto1 wrote in post #16611591 A 135mm f1.4 lens would need to have a 96mm diameter max aperture. To accomodate that, the lens would need to be about the size of the 200/2L IS. I think I can live with the 135/2L. I would like to see it updated with curved aperture blades, but other than that I don't think there's a whole lot of room for improvement. Well my 135 F2 arrives tomorrow. I'll see how good it is, last time I used it was on crop so I'm expecting better results. A7rIII | A7III | 12-24 F4 | 16-35 GM | 28-75 2.8 | 100-400 GM | 12mm 2.8 Fisheye | 35mm 2.8 | 85mm 1.8 | 35A | 85A | 200mm L F2 IS | MC-11
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