October 24, 2014, 08:53:59 AM

Author Topic: Official: Sigma 24-105mm f/4 DG OS  (Read 13360 times)

beckstoy

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #15 on: October 14, 2013, 01:58:32 PM »
If this lens is awesome, I'll sell my EF 24-105 f4 to help pay for it.

However...in this range, I'm dying to see what the rumored Siggy 24-70 f2 will look like.  I'll probably hold off on anything until it's revealed (IF it's revealed).
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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #15 on: October 14, 2013, 01:58:32 PM »

dadgummit

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #16 on: October 14, 2013, 02:10:38 PM »
If this lens is awesome, I'll sell my EF 24-105 f4 to help pay for it.

However...in this range, I'm dying to see what the rumored Siggy 24-70 f2 will look like.  I'll probably hold off on anything until it's revealed (IF it's revealed).

If this lens has a 82mm filter size for an f4 lens I cannot wait to see what an f2 zoom would have....

beckstoy

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #17 on: October 14, 2013, 02:12:46 PM »
If this lens is awesome, I'll sell my EF 24-105 f4 to help pay for it.

However...in this range, I'm dying to see what the rumored Siggy 24-70 f2 will look like.  I'll probably hold off on anything until it's revealed (IF it's revealed).

If this lens has a 82mm filter size for an f4 lens I cannot wait to see what an f2 zoom would have....

Yeah, I had the same thought.  Start saving your $ for a B+W 100mm UV filter!  =)

...It probably will be huge...
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Axilrod

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #18 on: October 14, 2013, 02:15:38 PM »
People guessing about the price, keep in mind that if someone had said the 18-35mm f/1.8 was going to be $799 you would have said they were crazy.
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wsgroves

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #19 on: October 14, 2013, 02:16:50 PM »
Really interested in the price. Doube I would ever get one as I have a good copy 24-105 but still....
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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #20 on: October 14, 2013, 02:18:54 PM »
If this lens is awesome, I'll sell my EF 24-105 f4 to help pay for it.

However...in this range, I'm dying to see what the rumored Siggy 24-70 f2 will look like.  I'll probably hold off on anything until it's revealed (IF it's revealed).

Bear in mind that this whole 24-70mm f/2 rumour stems entirely from one fake image. Much as I'd love to think Sigma will announce such a lens, I don't believe for a second that they will. I'd be more than happy with the announcement of an Art series 24-70mm f/2.8 OS.

facedodge

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #21 on: October 14, 2013, 02:25:16 PM »
how do these charts compare to canon charts?
Canon:


Sigma:


However, comparing MTF charts from one manufacturer to another is largely meaningless due to differences in the way they measure it.

Canon MTF source: http://www.usa.canon.com/cusa/support/professional/lenses/ef_lenses/ef_24_105mm_f_4l_is_usm#Overview

Edited....

I looked up how Sigma does their MTFs. Both lines are wide open. Red is 10, Green is 30.

So, ignore Canon's blue lines. Focus on the black only, as Canon's blue line is at F/8. Canon
s black thick compares to Sigma's Red and Canon's thin black compares to Sigma's green.

Looks like they have similar contrast, but Sigma is a bit sharper in the center at both ends. Sigma also has better bokeh.

Looking at this page, http://www.sigma-global.com/en/lenses/cas/product/art/a_24_105_4/, the sigma has better barrel distortion and less vignetting.
« Last Edit: October 14, 2013, 02:38:42 PM by facedodge »

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #21 on: October 14, 2013, 02:25:16 PM »

distant.star

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #22 on: October 14, 2013, 02:45:15 PM »
.
I'll believe this when I see it.

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canon1dxman

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #23 on: October 14, 2013, 02:48:53 PM »
How long before a Canon Mk 2....? I love my 24-105 which I have had for years now but Sigma have moved the goal posts...

Albi86

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #24 on: October 14, 2013, 03:11:29 PM »
how do these charts compare to canon charts?
Canon:


Sigma:


However, comparing MTF charts from one manufacturer to another is largely meaningless due to differences in the way they measure it.

Canon MTF source: http://www.usa.canon.com/cusa/support/professional/lenses/ef_lenses/ef_24_105mm_f_4l_is_usm#Overview

Edited....

I looked up how Sigma does their MTFs. Both lines are wide open. Red is 10, Green is 30.

So, ignore Canon's blue lines. Focus on the black only, as Canon's blue line is at F/8. Canon
s black thick compares to Sigma's Red and Canon's thin black compares to Sigma's green.

Looks like they have similar contrast, but Sigma is a bit sharper in the center at both ends. Sigma also has better bokeh.

Looking at this page, http://www.sigma-global.com/en/lenses/cas/product/art/a_24_105_4/, the sigma has better barrel distortion and less vignetting.

Can't really do such comparisons.... we don't even know if the MTF are real or computer-generated. If they are real they are obtained moving the foveon around the 4 corners of the frame. This would result in a equivalent FF sensor close to the D800 in pixel density.

Rat

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #25 on: October 14, 2013, 03:12:46 PM »
I doubt its price will be higher than the Canon L one... It would not be a great marketing idea.
I'd happily assume Sigma came up with this lens when Canon introduced the 24-70/4, which Sigma probably interpreted as "the 24-105 is EOL". Of course Sigma wants that piece of the market. I don't think they care about the 24-105 price, they'll just want to undercut the 24-70/4 (and the Nikkor).

It's good to know that even if Canon retires the 24-105, there'll be an equivalent lens (well, sort of) but I'd still be very reluctant because of AF issues. I'd like to see that change, these folks are putting out a lot of nice glass lately.
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LetTheRightLensIn

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #26 on: October 14, 2013, 03:13:56 PM »
how do these charts compare to canon charts?
Canon:


Sigma:


However, comparing MTF charts from one manufacturer to another is largely meaningless due to differences in the way they measure it.

Canon MTF source: http://www.usa.canon.com/cusa/support/professional/lenses/ef_lenses/ef_24_105mm_f_4l_is_usm#Overview

Edited....

I looked up how Sigma does their MTFs. Both lines are wide open. Red is 10, Green is 30.

So, ignore Canon's blue lines. Focus on the black only, as Canon's blue line is at F/8. Canon
s black thick compares to Sigma's Red and Canon's thin black compares to Sigma's green.

Looks like they have similar contrast, but Sigma is a bit sharper in the center at both ends. Sigma also has better bokeh.

Looking at this page, http://www.sigma-global.com/en/lenses/cas/product/art/a_24_105_4/, the sigma has better barrel distortion and less vignetting.

It also has to be able to match the Canon 24-70 f/4 IS. I thought it might be able to match it, not sure now.

Eldar

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #27 on: October 14, 2013, 03:15:18 PM »
I am looking forward to the reviews of this one. After the success with the 35/1.4, I find it hard to believe Sigma would add a crappy lens to their ART-series. But I´m using the 24-70 f2.8L II and I don´t believe the Sigma will be good enough to tempt me to swap, but never say never ...
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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #27 on: October 14, 2013, 03:15:18 PM »

preppyak

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #28 on: October 14, 2013, 03:24:16 PM »
But I´m using the 24-70 f2.8L II and I don´t believe the Sigma will be good enough to tempt me to swap, but never say never ...
If you paid the premium for the 24-70 vII, Im not sure Sigma could make a 24-105 f/4 that would possibly match those standards.

It will be a very good $8-900 lens...it will not compete with a lens that retails at nearly 3x that price

RGomezPhotos

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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #29 on: October 14, 2013, 03:29:12 PM »
Yes, Price and IQ.  Let's see 'em!
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Re: Official: Sigma 24-105mm f/4 DG OS
« Reply #29 on: October 14, 2013, 03:29:12 PM »