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Author Topic: Realistic wish lens  (Read 12903 times)

ianhar

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Re: Realistic wish lens
« Reply #45 on: November 07, 2011, 10:09:55 AM »
I'd like to see a 24mm f/1.8 or f/2 prime and a 17-50mm f/4L IS to round out my ideal landscape setup. 

Why would you want 24 1.8 there is 24 1.4 or you could go a bit narrower with 28 1.8 which is considerably cheap

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Re: Realistic wish lens
« Reply #45 on: November 07, 2011, 10:09:55 AM »

mackguyver

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Re: Realistic wish lens
« Reply #46 on: November 07, 2011, 10:34:50 AM »
A 135 f/2 IS lens - f/2 is fast, but there are times I'd like to keep the ISO down a bit when I hand hold and would love to be able to shoot it at 1/30s or so.  Jeff Ascough recently mentioned that he's swapped out the 135 for a 70-200 2.8 IS II for that very reason.
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dilbert

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Re: Realistic wish lens
« Reply #47 on: November 07, 2011, 11:29:38 AM »
Canon used to have a 20-35mm f/3.5-4.5 USM.

The IQ wasn't that great (and thus not very popular) but it was a small lens.

Now, if they could fix that up a bit...

AprilForever

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Re: Realistic wish lens
« Reply #48 on: November 07, 2011, 11:52:47 AM »
50mm 0.75  ;D
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Surgeonman

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Re: Realistic wish lens
« Reply #49 on: November 07, 2011, 11:53:03 AM »
400 f:4 L is   Or. 400 f:5.6  replacement with adding four stops IS.......

briansquibb

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Re: Realistic wish lens
« Reply #50 on: November 07, 2011, 12:44:57 PM »
A 135 f/2 IS lens - f/2 is fast, but there are times I'd like to keep the ISO down a bit when I hand hold and would love to be able to shoot it at 1/30s or so.  Jeff Ascough recently mentioned that he's swapped out the 135 for a 70-200 2.8 IS II for that very reason.
The 135f2 is a great lens even when shooting at f2. On a 5dII@f2 and 800 iso you really are in low light and probably shouldn't be taking portraits.

tron

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Re: Realistic wish lens
« Reply #51 on: November 07, 2011, 09:19:08 PM »
I believe CANON "owes" us 3 new 400mm lenses:
 
1. A second version of the 400mm f/4 DO lens , even lighter (all II telephoto versions are), with better contrast although not more expensive :-)
2. A 400mm f/5.6L IS
and
3. A new 100-400mm f/5.6L IS with the latest IS generation.

Am I asking too much? (Anyway I did not want to wait so I have just ordered the current 100-400mm)

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Re: Realistic wish lens
« Reply #51 on: November 07, 2011, 09:19:08 PM »

Jettatore

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Re: Realistic wish lens
« Reply #52 on: November 08, 2011, 09:01:15 AM »
I've got my eye on telephoto, as that's what I don't have in my current kit.

70-200L IS II seems great to me, and I've seen the shots that can be had with it, and 2.8 is as slow as I can go for my needs as I like to shoot in available light, but..  My style doesn't really support having huge lenses.  And with that focal range I would definitely need to be carrying two bodies for artistic consideration, both with lenses mounted (one of them being wide-angle), making the entire ordeal quite awkward.  To further confuse this, I also would want to be able to go well beyond 200mm without fiddling around or impossibly carrying a third setup....

So something really quite unique that would even push APS-C through to more pro usage, like an L quality equivalent of the 70-200 f/2.8L IS II that is shorter and lighter while at the same speed and IS rating *with a built in tele-extender!!!*.  If it was done with pro-usage and pro-build quality in mind, it'd be worth it's weight in gold and wouldn't need to be designed around budget constraints.  First L marked EF-S anyone?
« Last Edit: November 08, 2011, 09:04:44 AM by Jettatore »

Rocky

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Re: Realistic wish lens
« Reply #53 on: November 09, 2011, 05:31:51 PM »
50mm 0.75  ;D
Dream on!!! If Canon can make it, it may weight over 4 lbs, with a 110mm filter and sells for over $10,000. Would you like to have 6 to 7  pounds of camera plus lens hanging on your neck all day long???
« Last Edit: November 09, 2011, 05:33:29 PM by Rocky »

dr croubie

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Re: Realistic wish lens
« Reply #54 on: November 09, 2011, 05:36:23 PM »
50mm 0.75  ;D
Dream on!!! If Canon can make it...

Didn't they already, in the 60s? Or was that someone else...? (they've had a 50/1.0 EF-mount, and i'm pretty sure a 50/0.95 at some point).

But yeah, goes against the "realistic" specification either way.
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Re: Realistic wish lens
« Reply #55 on: November 09, 2011, 05:40:04 PM »
I think a 50/0.75 could be done quite small, since the front opening only needs to be 67mm. That's smaller than a 400/5.6. I think the problem will be that the extreme speed will be incredibly hard to correct optically so while you can optimise for few parameters, other areas will really suck.

On a similar note, in the past they did an EF 50mm f/1.0 which was later replaced by the f/1.2. If they were to have another go, could they do a f/1.0 much better now? The f/0.95 I think was a "TV lens".
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dr croubie

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Re: Realistic wish lens
« Reply #56 on: November 09, 2011, 05:47:05 PM »
http://en.wikipedia.org/wiki/Lens_speed has the big list.
I think the one I was thinking of was the Rodenstock 50/0.75, it's been adapted to Leica M and micro 4/3, it covers the 4/3 image circle so might get as far as APS-C, but the flange distance is just too short to use on any DSLR. Bring on Canon Mirrorless!
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RC

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Re: Realistic wish lens
« Reply #57 on: November 09, 2011, 07:54:59 PM »
I don't think it is asking too much for an APS-C version of the 24-105 f/4L.  There are plenty of serious crop shooters out here who want HQ lens.  Yes, someday I'll get a 5D3 but I'm not getting rid of my 7D.

I want a 15-65 f/4L IS USM!  I want IS, weather resistant, constant aperture, and for heck sakes Canon, include the hood and case.  Excellent IQ goes without saying.  I'm even OK with an EF-S version but prefer EF of course.  If this was a 2.8 constant lens that would be even better but I'd be thrilled with a f/4.  Furthermore, I think the price (for an f/4) should be about what the 24-105 f/4L is. 

Am I missing something?  Is this too difficult or pricey to build?

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Re: Realistic wish lens
« Reply #57 on: November 09, 2011, 07:54:59 PM »

Rocky

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Re: Realistic wish lens
« Reply #58 on: November 10, 2011, 02:50:16 AM »
50mm 0.75  ;D
Dream on!!! If Canon can make it...

Didn't they already, in the 60s? Or was that someone else...? (they've had a 50/1.0 EF-mount, and i'm pretty sure a 50/0.95 at some point).

But yeah, goes against the "realistic" specification either way.

Yes,  Canon made a 50mm f 0.95 for their range finder in the 60s. Leica is making a 50mm f 0.95 ($11,000) for their M series Range finder camera now. It is a lot easier to make a fast 50mm lens for the range finder camera than the for SLR. As far as I know, the fastest 50mm lens for SLR is f 1.2.  0.75 is more than another stop faster. it will be quite a challenge.

Bateman75

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Re: Realistic wish lens
« Reply #59 on: November 10, 2011, 04:42:08 AM »

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Re: Realistic wish lens
« Reply #59 on: November 10, 2011, 04:42:08 AM »