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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 14 Oct 2013 (Monday) 12:14
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OFFICIAL: Sigma 24-105mm f/4 DG OS Art

 
Ginga
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Oct 14, 2013 13:36 |  #16

As long as it is sharp across the frame at all FL's (which the 24-105L is not), it will be a big win. Especially for the landscapers and urban photographers.


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facedodge
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Oct 14, 2013 13:44 |  #17

Sigma

IMAGE: http://www.sigma-global.com/en/lenses/cas/product/art/a_24_105_4/data/mtf.gif

Canon
IMAGE: http://www.usa.canon.com/CUSA/assets/app/images/lens/ef24-105mtf_wide.gif
IMAGE: http://www.usa.canon.com/CUSA/assets/app/images/lens/ef24-105mtf_tele.gif

It looks like they have similar contrast. Sigma is a bit sharper in the center, but both trail off hard at the edges of the frame.

According to their website (external link), it has better barrel distortion and less vignetting.

Those here looking for incredible sharpness may be disappointed. It does look like it has better bokeh, though.

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lovemyram4x4
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Oct 14, 2013 13:50 |  #18

I was excited about this until I saw the MFD is the same as the 24-105L and which end of the lens the zoom/focus rings are. So this still leaves the 24-70 f4 as the preferred standard zoom w/ IS for underwater.

Hopefully the 24-70 f2 OS will exist and it will have a closer MFD and the zoom/focus rings in right place. As it is right now I'd need 3 standard zooms if I want to cover faster than f4, long than 70mm and IS for underwater(24-70 f4 hass the only usable MFD on a lens with IS). I do believe the Tamron has the MFD but it also has the zoom/focus rings in the wrong places and on top of that they turn the wrong direction.




  
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Ginga
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Oct 14, 2013 13:51 |  #19

@Facelodge.
Comparing MTF charts from one manufacturer to another is meaningless due to differences in the way they measure it.


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DreDaze
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Oct 14, 2013 13:59 |  #20

Ginga wrote in post #16370235 (external link)
What's that sound I hear? It's the sound of Canon 24-70/4 IS sales imploding.

If this lens walks in the footsteps of the Sigma 35 Art, and the Sigma 18-35 f/1.8, it's going to be razor sharp.

there were 24-70IS sales to begin with?...where? :)

FEChariot wrote in post #16370336 (external link)
I'm sure its going to be great, but the current 24-105L being so cheap when purchased as part of kits or in white boxes, seems to me like they are going to have to go pretty cheap with this. I think it would have made more sence for them to come out with a 24-70/2.8 OS art first.

that's my thoughts as well...i bet it comes in at like $800 or so...which if it performs better than the 24-105L still will get them sales from canon users...and will bring the 24-105L value down even more...


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YashicaFX2
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Oct 14, 2013 14:02 |  #21
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All I saw were rumors and a release date that has already passed: 9/2013. Where is the lens?


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FEChariot
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Oct 14, 2013 14:21 |  #22

tkbslc wrote in post #16370359 (external link)
I'm guessing they saw a hole in this category when looking at all the mounts this lens will be made for. Maybe the competition is tighter for Canon mount, but Sony and Nikon don't have anything good in this category.

Very good point. I'm so ingrained with Canon, having too many lenses already, that I don't often give thought to the other brands.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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Hogloff
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Oct 14, 2013 14:31 |  #23
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bobbyz wrote in post #16370396 (external link)
Agree. Unless this thing is like $400 or so.

Why. If it follows in the footsteps of the 35 and 18-35 lens, then this will be a great lens anywhere under $1,000. Especially when considering the just normal 24-70 f4 lens goes for ( cough..cough ) $1499.




  
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Hogloff
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Oct 14, 2013 14:34 |  #24
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facedodge wrote in post #16370472 (external link)
Sigma
[GIFS ARE NOT RENDERED IN QUOTES]

Canon
[GIFS ARE NOT RENDERED IN QUOTES]
[GIFS ARE NOT RENDERED IN QUOTES]

It looks like they have similar contrast. Sigma is a bit sharper in the center, but both trail off hard at the edges of the frame.

According to their website (external link), it has better barrel distortion and less vignetting.

Those here looking for incredible sharpness may be disappointed. It does look like it has better bokeh, though.

Canon's charts are theoretical, not truly measured and always show better than charts produced by 3rd parties that actually measure the lens. I wouldn't even look at charts from Cannon.




  
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Hogloff
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Oct 14, 2013 14:35 |  #25
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lovemyram4x4 wrote in post #16370493 (external link)
I was excited about this until I saw the MFD is the same as the 24-105L and which end of the lens the zoom/focus rings are. So this still leaves the 24-70 f4 as the preferred standard zoom w/ IS for underwater.

Hopefully the 24-70 f2 OS will exist and it will have a closer MFD and the zoom/focus rings in right place. As it is right now I'd need 3 standard zooms if I want to cover faster than f4, long than 70mm and IS for underwater(24-70 f4 hass the only usable MFD on a lens with IS). I do believe the Tamron has the MFD but it also has the zoom/focus rings in the wrong places and on top of that they turn the wrong direction.

See my other post. The Canon charts are theoretical, not actual measurements.




  
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bobbyz
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Oct 14, 2013 14:36 |  #26

Hogloff wrote in post #16370616 (external link)
Why. If it follows in the footsteps of the 35 and 18-35 lens, then this will be a great lens anywhere under $1,000. Especially when considering the just normal 24-70 f4 lens goes for ( cough..cough ) $1499.

35mm f1.4 art is already $750 or so. Sigma 120-300mm f2.8 OS (non sports) was what like $3500, a year later selling for $2250 and one can get for $2000.


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Talley
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Oct 14, 2013 14:45 |  #27

$899 and sharp as a tack.

but many will report AF issues. My issue is the OS units in Sigmas. I've seen many fail.


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Hogloff
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Oct 14, 2013 14:47 |  #28
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bobbyz wrote in post #16370634 (external link)
35mm f1.4 art is already $750 or so. Sigma 120-300mm f2.8 OS (non sports) was what like $3500, a year later selling for $2250 and one can get for $2000.

The 35 is selling for $899 and the art version of the 120-300 for $3500. Where are you getting your prices from?




  
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Ginga
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Oct 14, 2013 14:50 |  #29

Talley wrote in post #16370665 (external link)
$899 and sharp as a tack.

but many will report AF issues. My issue is the OS units in Sigmas. I've seen many fail.

I know that back/front focus or even focus inconsistencies can be a big problem below f/3.0 and even bigger below f/1.8.. But surely not at f/4? The DOF should be enough to hide it.

And if there is problems, you can always return the lens or simply tune the AF with the USB-dock. :)


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gremlin75
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Oct 14, 2013 14:54 |  #30

This lens surprises me. Basically going up against a kit lens so why?

The 35A is up against the other high end 35's and is amazing people. The 120-300 S is a lens in its own class. The 17-70 C is a continuation of a lens that already saw quite a bit of praise and is faster then other similar lenses. The 18-35A is another lens in a class of its own.......now a lens that is in a kit lens class that is the same speed. Why? I'd think many FF users would rather see another 24-70 f2.8 option (and yes the rumors of a 24-7 f2 from soma are out there but who knows if they are true)

Just seems like an odd choice for the next lens in their new line up.

EDIT: granted I'm just looking at it from the canon prospective. Not sure what other company's have as an option on this range.




  
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OFFICIAL: Sigma 24-105mm f/4 DG OS Art
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