December 22, 2014, 07:16:20 AM

Author Topic: Rumor: Sigma 16-20 f/2 DG Art [CR1]  (Read 4837 times)

bereninga

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #15 on: December 19, 2013, 11:56:38 AM »
This would be an interesting astrophotography and landscape option if the price is right for the quality! I'm glad it's f/2, but I worry about its size.

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #15 on: December 19, 2013, 11:56:38 AM »

Pag

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #16 on: December 19, 2013, 12:31:46 PM »
This could be a great replacement for my Tokina 11-16mm f/2.8 now that I'm on full frame.

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #17 on: December 19, 2013, 02:04:12 PM »
4mm of zoom? Why bother? I guess there is quite a difference between 16mm and 20mm on FF but why not just pick one focal length and make it awesome. Like 16mm or 17mm f/2.8 would be perfect.

Would this lens be the worlds shortest zoom if it was made??

Yeah, it might be even less, depending on how marketing "rounds" the numbers.  For all we know, it could be a 17-19, lol.

Viggo

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #18 on: December 19, 2013, 02:05:32 PM »
This could be a great replacement for my Tokina 11-16mm f/2.8 now that I'm on full frame.

I was about mention the Tokina, it only has 5mm of zoom so 4mm isn't completely insane. The f2 is though, and in a great way  ;D
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rs

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #19 on: December 19, 2013, 02:20:21 PM »
This could be a great replacement for my Tokina 11-16mm f/2.8 now that I'm on full frame.

I was about mention the Tokina, it only has 5mm of zoom so 4mm isn't completely insane. The f2 is though, and in a great way  ;D
Its all about the zoom ratio, not the zoom difference in mm. A 200-400 lens spans a 200mm zoom range, yet its only a 2x zoom. Compare that to a 24-105; 81mm zoom range, yet it's 4.4x.

The Tokina 11-16 has a 1.45x zoom range, compared to a more conventional 10-22 or 16-35 at 2.2x. This rumoured Sigma has about half the Tokina's zoom range at 1.25x, which can't provide a dramatic framing difference however you look at it.
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preppyak

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #20 on: December 19, 2013, 02:23:38 PM »
That's a narrow range.  f/2?  Really?  On an UWA?  Why?  I'd be happy with a 16-24/2.8.   Just my $.02
It's targeting people who work in really low-light (street/night) where the difference between f/2 and f/2.8 is whether the milky way shows up, or whether they get motion blur. Not really sure the point of a zoom, I think an 18mm f/2 would be a nice split. And obviously when you don't need to shoot at f/2, it would sharpen up nicely at f/5.6-8

But a 16-24 f/2.8 lens appeals to a different user base than 16-20 f/2. I can get primes in the f/2.8 range that wide for much cheaper than a 16-24 f/2.8 would cost. I cant get primes/zooms wider than 20mm that go <f/2, and I can't get a good prime/zoom wider than 24mm that goes below f/2.8. There's definitely a market there for it.

This could also technically be targeted at videographers, as it becomes a different focal length with all the video crop factors, and the depth of field is important. But I'm guessing that's not the main market for it.
« Last Edit: December 19, 2013, 02:26:21 PM by preppyak »

Rienzphotoz

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #21 on: December 19, 2013, 02:56:35 PM »
unusual zoom range
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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #21 on: December 19, 2013, 02:56:35 PM »

CR00

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #22 on: December 19, 2013, 03:03:33 PM »
Wow.  1.25X zoom.

iowapipe

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #23 on: December 19, 2013, 04:08:31 PM »
This would be an interesting astrophotography and landscape option if the price is right for the quality! I'm glad it's f/2, but I worry about its size.

yep - as long as coma is minimal, astro use would be nice.
« Last Edit: December 19, 2013, 04:16:50 PM by iowapipe »

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #24 on: December 19, 2013, 07:01:18 PM »
That's a narrow range.  f/2?  Really?  On an UWA?  Why?  I'd be happy with a 16-24/2.8.   Just my $.02
It's targeting people who work in really low-light (street/night) where the difference between f/2 and f/2.8 is whether the milky way shows up, or whether they get motion blur. Not really sure the point of a zoom, I think an 18mm f/2 would be a nice split. And obviously when you don't need to shoot at f/2, it would sharpen up nicely at f/5.6-8

But a 16-24 f/2.8 lens appeals to a different user base than 16-20 f/2. I can get primes in the f/2.8 range that wide for much cheaper than a 16-24 f/2.8 would cost. I cant get primes/zooms wider than 20mm that go <f/2, and I can't get a good prime/zoom wider than 24mm that goes below f/2.8. There's definitely a market there for it.

This could also technically be targeted at videographers, as it becomes a different focal length with all the video crop factors, and the depth of field is important. But I'm guessing that's not the main market for it.

+1.

With that maximum aperture, you could forget that it's a zoom and buy it / use it just because it's a 16mm f/2. The moderate amount of zoom, provided it doesn't meaningfully reduce image quality compared with what a prime lens in that range could deliver, would be just a bonus. This seems to be the approach with Sigma's 18-35mm.

Whether or not there is any truth behind this rumour is another matter.

tron

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #25 on: December 19, 2013, 07:24:09 PM »
This would be an interesting astrophotography and landscape option if the price is right for the quality! I'm glad it's f/2, but I worry about its size.

yep - as long as coma is minimal, astro use would be nice.
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dilbert

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #26 on: December 19, 2013, 11:15:11 PM »
With a small zoom range like that then the distortion may be well managed. That would kick the 16-35 and 17-40 quite hard in the pants at the wide end

9VIII

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #27 on: December 20, 2013, 10:23:31 AM »
 Zoom lenses are constantly criticized for having non-useful focal lengths, offering a wide zoom range but only giving usable results within a specific part of that. Hopefully Sigma is working to address that issue, giving people top quality within a specific zoom range and not frustrating us with substandard results from unrealistic lens designs.
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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #27 on: December 20, 2013, 10:23:31 AM »

Radiating

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #28 on: January 16, 2014, 12:33:22 AM »
Man do I love Sigma. I wish they'd make this lens. :)

Or like CR said, a 16-24mm f/2

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Re: Rumor: Sigma 16-20 f/2 DG Art [CR1]
« Reply #28 on: January 16, 2014, 12:33:22 AM »