Official: Sigma 24-105mm f/4 DG OS

[AdamJ]

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]

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.

 

[distant.star]

.
I'll believe this when I see it.

 

[canon1dxman]

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]

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]

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.

 

[LetTheRightLensIn]

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]

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 ...

 

[preppyak]

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]

Yes, Price and IQ. Let's see 'em!

 

[canon1dxman]

As I understand it, availability September 2013. Must check my calendar!

 

[mackguyver]

Can't really do such comparisons.... we don't even know if the MTF are real or computer-generated.

From everything I've read, Zeiss, Hasselblad, (and maybe Leica and the other MF mfgs) are the only ones that use "real" MTF charts.

I'll be excited about this lens if it's as big a bargain as the 18-35 - i.e. less than the white box BigValueInc, etc. price of the Canon 24-105.

 

[unfocused]

As I understand it, availability September 2013. Must check my calendar!

Sigma is notorious for missing their target dates. Take that however you want. Some might say it's an indicator of poor planning, others might say they don't want to release a lens until it's ready. You decide.

 

[fox40phil]

On the Sigma homepage I can't find anything about "weather sealing"... this sucks -.- .... would be a nice travel/bad weather zoom lens!! :-\

 

[Sporgon]

... and where are all of those who said "fake!" now?

Hiding ;D. :-[

Guess Sigma are going to bring the ubiquitous 24-105 to Nikon and Sony.

I presume they must be aiming at 24-70 f2.8 II image quality at a price below the 24-70 f4 IS. I don't see how they can match discounted EF 24-105's price let alone the used ones which are out there in their thousands.

The 24-70 f4 IS is a very different lens it would seem. Small and handy, goes well on an ungripped body whereas the Sigma looks like it's a beast.

 

[brad-man]

... and where are all of those who said "fake!" now?

Hiding ;D

Guess Sigma are going to bring the ubiquitous 24-105 to Nikon and Sony.

I presume they must be aiming at 24-70 f2.8 II image quality at a price below the 24-70 f4 IS. I don't see how they can match discounted EF 24-105's price let alone the used ones which are out there in their thousands.

The 24-70 f4 IS is a very different lens it would seem. Small and handy, goes well on an ungripped body whereas the Sigma looks like it's a beast.

That will depend on Canon's game plan. Is the 24-70IS a replacement for the 24-105, or just an additional lens choice? I would expect the Sigma to trounce the 24-105, and handily beat the 24-70 f/4. I doubt it will approach the 24-70II. They will pick that fight with their own 2.8 (or lower) offering. This Sigma will likely be the best single lens solution for folks that don't have the cash or incentive to buy the Tamron or the Canon 24-70 2.8. Naturally, until we see the price, this is all speculation. I would expect it to come in at around $900-1000, but who knows?

 

[RLPhoto]

Yawn.

 

[jdramirez]

how do these charts compare to canon charts?

my question exactly. I'm really curious if this lens will warrant paying more than 650 for the Canon version.

 

[that1guyy]

Why is Sigma so opposed to adding weather sealing? This could be a top lens if it had weather sealing. Same goes for their other recent lenses.

 

[LetTheRightLensIn]

... and where are all of those who said "fake!" now?

The Sigma 24-105 was announced today.

Lalalalalalal I can't hear you lalallalalaalalala can't hear you lalalalalala. There will NEVER be a sigma 24-105.

But I just said that it was ann.....

Lalalalalala I can't hear you lalalalala.