Sigma 24mm f/1.4 DG HSM Art Coming in October

[Canon Rumors]

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Sigma is planning to announce a 24mm f/1.4 DG HSM Art series lens at Photokina with availability coming in October of 2014.</p>
<p>There has been no word on the possible 85mm f/1.4 DG HSM Art or 135mm f/1.8DG HSM Art lenses. I think both the 85 and 135 would be more highly desired than a 24mm prime, though if it’s as good as the 35mm or 50mm, we’ll take it anyway.</p>
<p><strong>Preorder the Sigma 50mm f/1.4 Art: <a href="http://www.amazon.com/gp/product/B00JPL7CK6/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00JPL7CK6&linkCode=as2&tag=canorumo-20" target="_blank">Amazon</a> | <a href="http://www.bhphotovideo.com/c/product/1045458-REG/sigma_311101_50mm_f_1_4_dg_hsm.html/bi/2466/kbid/3296" target="_blank">B&H Photo</a> | <a href="http://www.adorama.com/SG5014REOS.html?KBID=64393" target="_blank">Adorama</a></strong></p>
<p>Source: [<a href="http://photorumors.com/2014/04/22/sigma-24mm-f1-4-art-lens-coming-in-october/" target="_blank">PR</a>]</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

 

[Woody]

2014 is turning to be the Year of the Lens...



...for SIGMA. ;D

 

[brad-man]

Yup. Too bad it won't auto focus good enough to hit the broad side of a galaxy ;D

Must wait for the 85...

 

[lycan]

Sigma, 500mm come on...

 

[Lightmaster]

Yup. Too bad it won't auto focus good enough to hit the broad side of a galaxy ;D

people pay 4000$ for non AF lens with only marginal better image quality.
i say sigmas AF in the new lenses is pretty good for the money.

 

[Eldar]

people pay 4000$ for non AF lens with only marginal better image quality.
i say sigmas AF in the new lenses is pretty good for the money.

If I can't trust it, it's worthless.

 

[Bob Howland]

Wild guess: Sigma will also introduce the current 85 f/1.4 in ART configuration at Photokina, but is keeping quiet about it to avoid damaging sales of their current lens. The 135 will have to wait a while, since it is a brand new lens.

 

[Lightmaster]

With Canon lenses mounted on a Canon camera, I've watched it focus on something and lock, then I press the focus button again, it de-focuses and refocuses again. Why can't it just "know" that it has acquired focus and not move the second time?

well that´s obvious not?

the camera had to know if you moved it.
that would mean constant focusing all the time.

otherwise the camera does not "know", if the focus it is set too is the correct focus.

and to know if it has achived optimum focus ist has to have a something it can measure against. that´s why it has to move the focus.

 

[CANONisOK]

With Canon lenses mounted on a Canon camera, I've watched it focus on something and lock, then I press the focus button again, it de-focuses and refocuses again. Why can't it just "know" that it has acquired focus and not move the second time?

That part of the focusing algorithm is necessary because your camera has no knowledge that it hasn't moved or whatever you are shooting hasn't moved. It may have *** in some models, but I've yet to hear of one with gyroscopes, accelerometers, and radar. ;D

Edit: I see Lightmaster was thinking the same thing I was. Great minds think alike!

 

[ksagomonyants]

2014 is turning to be the Year of the Lens...



...for SIGMA. ;D

The 2014 doesn't end in April

 

[KarstenReis]

How quickly "new" Sigma's reputation went downhill. The 35A was hailed a great lens and now a lot of forum members seem to be bashing the 50A before they get their hands on a copy. And now some are already saying that this will have poor autofocus performance. I am quite excited for this lens for night and astro as the Canon 24L has more coma than I would like for star shots.

 

[docsmith]

Yup. Too bad it won't auto focus good enough to hit the broad side of a galaxy ;D

Must wait for the 85...

When I read back over TDP's review of the S50A and I think to myself on how to obtain the best focus using a tripod, using the AF from the camera with phase detect focusing is not how I'd do it.

With Canon lenses mounted on a Canon camera, I've watched it focus on something and lock, then I press the focus button again, it de-focuses and refocuses again. Why can't it just "know" that it has acquired focus and not move the second time?

Likely, the camera needs more than one data point to optimize/determine focus. With Phase detect, it could be that OoF is used to define what is in focus.

 

[pwp]

I say Sigmas AF in the new lenses is pretty good for the money....

If I can't trust it, it's worthless.

That was how I felt with the erratic and occasionally brilliant old model Sigma 50mm f/1.4.
My two copies got used for some personal work, endless testing but simply couldn't be trusted for client work. Therefore ultimately worthless.

I truly hope Sigma finds an AF fix for the new lenses deliverable via firmware. The optics are clearly awesome, but without dependable AF they're a commercial no-go.

-pw

 

[infared]

Was there any mention of any of the reviewers of the 50mm Art f/1.4 running their test lens thru this process???
http://www.lensrentals.com/blog/2013/06/sigma-optimization-pro-and-usb-dock

I think that Roger is very professional and very reliable...and he seems to think the dock and the software are a valuable tool. I just wonder if Brian at the Digital Pic had run the lens thru the software after his preliminary test to see if his copy tested any better????

I would like to see Dustin Abbott get his hands on a retail copy of the Sigma Art 50mm and a Dock and give us his input. Can that happen!?!?!?!?!?!?

 

[Orangutan]

well that´s obvious not?

the camera had to know if you moved it.
that would mean constant focusing all the time.

otherwise the camera does not "know", if the focus it is set too is the correct focus.

and to know if it has achived optimum focus ist has to have a something it can measure against. that´s why it has to move the focus.

I was about to respond that what you describe sounds like contrast-detect focus, not phase-detect focus, but then I figured: I'll just wait for Neuro to respond: he probably has already researched the problem and filed a patent application for it. ;D

 

[docsmith]

How quickly "new" Sigma's reputation went downhill. The 35A was hailed a great lens and now a lot of forum members seem to be bashing the 50A before they get their hands on a copy. And now some are already saying that this will have poor autofocus performance.

That's mob mentality for you.

Is there a problem with people discussing a potential flaw? I think Roger has already summarized what we are seeing....just with the prerelease copies hitting reviewers it may be happening a bit ahead of schedule.

http://www.lensrentals.com/blog/2013/12/a-bit-of-a7r-sanity

BTW...if the 24A is optically similar to the 50A and 35A from f/1.4 to f/2.8 with reasonable coma, I'll buy one in a heartbeat.

 

[dufflover]

people pay 4000$ for non AF lens with only marginal better image quality.
i say sigmas AF in the new lenses is pretty good for the money.

If I can't trust it, it's worthless.

Fine, turn off the AF and treat it like a poor man's Otus which it gets pretty close. Problem solved

 

[Valvebounce]

Hi Dilbert.
Isn't that why so many of us use BBF, to isolate the focus from the shutter actuation. If your worried about a 0.5mm or 0.020inch focus accuracy shouldn't you be in manual focus with x10 live view to guarantee you have focus locked where you want it within 0.1mm or 0.003937007 inch! ;D ;D

Cheers Graham.

The point I was making above is that if you've already focused the lens on X and press the button again, it is doubtful that the lens will end up in exactly the same position as before (and by exact, I mean exact, not some "within half a millimeter.")

 

[Dylan777]

people pay 4000$ for non AF lens with only marginal better image quality.
i say sigmas AF in the new lenses is pretty good for the money.

If I can't trust it, it's worthless.

+1...I think is too early to tell. Sit back and enjoy the show Gents

 

[KarstenReis]

How quickly "new" Sigma's reputation went downhill. The 35A was hailed a great lens and now a lot of forum members seem to be bashing the 50A before they get their hands on a copy. And now some are already saying that this will have poor autofocus performance.

That's mob mentality for you.

Is there a problem with people discussing a potential flaw? I think Roger has already summarized what we are seeing....just with the prerelease copies hitting reviewers it may be happening a bit ahead of schedule.

http://www.lensrentals.com/blog/2013/12/a-bit-of-a7r-sanity

No problem discussing a potential flaw in a rumored lens as this is what this site is for. But, and this is a big but, already dismissing a 24A because of one review seems a bit premature to me. It would almost be akin to dismissing the rumored 7D Mk II due to poor autofocus from one review of a about to be released new Canon body. I agree with Roger's post and find his writing quite funny. I think the forum stoops down to this level sometimes... http://www.lensrentals.com/blog/2012/03/hammerforum-com