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Author Topic: Official: Sigma 24-105mm f/4 DG OS  (Read 25010 times)

mackguyver

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Re: 82mm
« Reply #60 on: October 15, 2013, 02:41:12 PM »
True, but the point he made still stands. A typical 50-55mm f/1.4 has a 58mm filter size. 77mm is huge for a 55mm f/1.4.

It seems lots of these lenses that do better at the edges than before are having extra larger fronts (70-300L, 24-70 II, 55mm Otus, etc.).
When the Zeiss 55 was first announced, many people believed that the only way to create superior IQ from the lens was if it had a huge image circle and only used the central (best) part.  I'm guessing that is a realistic possibility and might be what many of the "oversized" 77 / 82mm lenses are doing.
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Re: 82mm
« Reply #60 on: October 15, 2013, 02:41:12 PM »

Sporgon

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Re: 82mm
« Reply #61 on: October 15, 2013, 03:05:24 PM »

When the Zeiss 55 was first announced, many people believed that the only way to create superior IQ from the lens was if it had a huge image circle and only used the central (best) part.  I'm guessing that is a realistic possibility and might be what many of the "oversized" 77 / 82mm lenses are doing.

That doesn't seem to have helped edge of frame on the Sigma 50mm 1.4 though. I believe that has a 77 front end.

Rick

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Re: 82mm
« Reply #62 on: October 15, 2013, 04:00:40 PM »
The Zeiss Otus 55mm f1.4 has an 82mm filter size too.
... I believe the Otus 55/1.4 is a 77mm.
Yep:


The quote "The new 82mm front element was designed to produce sharpness across the entire frame " was copy/pasted directly form the Zeiss website, but I see in the pic the 77mm thread. Can the front element be 82mm while the thread is 77?  Just curious. :)

Jan Jasinski

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #63 on: October 15, 2013, 05:34:28 PM »
Lens isn't listed on Sigma's Global site. The links directed to it don't work, and error occurs.
Perhaps they aren't ready to release it?
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Jibz

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #64 on: October 16, 2013, 03:03:15 AM »
Hey,

The lens is now listed on SIGMA website, It's official : http://www.sigma-global.com/en/lenses/cas/product/art/a_24_105_4/
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Valvebounce

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #65 on: October 16, 2013, 04:03:19 AM »
Hi folks.
Available TBA.
Price ????

So not much change except it has reappeared on the site?

Cheers Graham.

Hey,

The lens is now listed on SIGMA website, It's official : http://www.sigma-global.com/en/lenses/cas/product/art/a_24_105_4/
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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #65 on: October 16, 2013, 04:03:19 AM »