C100: Sigma to complement 18-35mm f1.8 Art with new 50-100mm f1.8 Art

Hmm...50-100 1.8. Very cool technological achievement, bravo Sigma. For me, from a practical viewpoint, I would use my EF 85mm 1.8 for any application of this, it cost me $300.00 and the end result is pretty much the same. Not that much difference in FOV between 50, 85 and 100 mm although I guess for event work, it could come in handy. I think for most of us, much wider to 100mm would be more useful, but I understand the techical limitations of making a 1.8 lens that goes way into wide territory to short tele. Good stuff and for those of you who spring for it, would be interested in seeing what the performance is.
 
Just a reminder that Sigma currently does not support or test for the Canon Cinema EOS line. Their last two Art lenses (20/1.4 & 24-35/2.0) do not work at all on the C300mk2 (iris locked wide open, no focus tools, no lens info, no communication between lens and camera...) Per Sigma support there's no lens firmware upgrade coming as the Cinema EOS line is unsupported. So maybe a good idea to hold off on that pre-order until this lens can be tested with the latest Canon Cinema EOS cameras?
 
Parrot said:
Just a reminder that Sigma currently does not support or test for the Canon Cinema EOS line. Their last two Art lenses (20/1.4 & 24-35/2.0) do not work at all on the C300mk2 (iris locked wide open, no focus tools, no lens info, no communication between lens and camera...) Per Sigma support there's no lens firmware upgrade coming as the Cinema EOS line is unsupported. So maybe a good idea to hold off on that pre-order until this lens can be tested with the latest Canon Cinema EOS cameras?
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If they came out with a really nice 14mm lens, they could come out with a trio of PL/EF cine lenses that would be a tempting buy for many.
 
Parrot said:
Just a reminder that Sigma currently does not support or test for the Canon Cinema EOS line. Their last two Art lenses (20/1.4 & 24-35/2.0) do not work at all on the C300mk2 (iris locked wide open, no focus tools, no lens info, no communication between lens and camera...) Per Sigma support there's no lens firmware upgrade coming as the Cinema EOS line is unsupported. So maybe a good idea to hold off on that pre-order until this lens can be tested with the latest Canon Cinema EOS cameras?
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Does the 18-35 f/1.8 work with the C300 II?
 
cpreston said:
Does the 18-35 f/1.8 work with the C300 II?
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Yes. Aperture works fine. Auto-focus and face-detection work as well. Same with the Tokina 11-16. I think they're a bit slower at auto-focusing on the C-series than Canon lenses, but they're still pretty fast and quite sufficient I find.


Parrot said:
Just a reminder that Sigma currently does not support or test for the Canon Cinema EOS line. Their last two Art lenses (20/1.4 & 24-35/2.0) do not work at all on the C300mk2 (iris locked wide open, no focus tools, no lens info, no communication between lens and camera...) Per Sigma support there's no lens firmware upgrade coming as the Cinema EOS line is unsupported. So maybe a good idea to hold off on that pre-order until this lens can be tested with the latest Canon Cinema EOS cameras?
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Sigma gave a specific firmware update to enable the 18-35 f/1.8 to work with auto-focusing at all apertures on the C-series (before that update it only auto-focused wide open at f/1.8). Are you saying they've decided to no longer update lenses for the C-series even though they had formerly done so?
 
Eric Coughlin said:
Are you saying they've decided to no longer update lenses for the C-series even though they had formerly done so?
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I am saying that Sigma USA Support told me that Sigma made the decision to not test nor support the Canon Cinema EOS series of cameras. I obviously found that decision rather strange so I asked again to be sure it was not a mistake and received a written confirmation again, this time as a less generic answer. I asked late last year (2015) after I tested the new 24-35/2.0 Art and found that it didn't work on my C300mk2. I proceeded to test again with multiple copies of the lens just in case, but no luck. 24-35/2.0 and 20/1.4 didn't work on C300mk2. These are the two newest Sigma Art lenses. In my tests the 18-35/1.8 worked fine with C300mk2. I also contacted a rental house that tested the same lenses and came to the same results with a different C300mk2 and their own Sigma lenses. They said they would list the incompatibilities on their web site, but so far they have not done so. My C300mk1 has worked fine with the Sigma 24-35/2.0. I haven't tested C300mk1 with the Sigma 20/1.4 yet.

BTW. The main reason I find it strange that Sigma would drop support for the Cinema EOS line is that all the Sigma crop lenses cover S35 sensor, while not all of Canon's own crop lenses cover the Canon S35 sensor. So there's reduced competition for Sigma. Also, Canon's crop lenses aren't exactly Sigma Art quality.
 
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AndreeOnline said:
Reliable leak site digicams-info.com posts this:

Here are detail specs of Sigma 50-100mm f/1.8 DC HSM Art lens:



  • Lens construction: 15 21 sheets group
  • Three FLD glass. One SLD glass. One high-refractive-index, high-dispersion glass. Three high refractive index SLD glass
  • Filter Size: 82mm
  • Shortest photographing distance: 95cm
  • Maximum magnification of 1: 6.7
  • Total length: 170.7mm
  • Maximum diameter: 93.5mm
  • Weight: 1490g
  • Aperture blades: 9 sheets (circular aperture)
  • Of the new development that has been thinned ultrasonic motor
  • Inner focus, inner zoom
  • Suggested retail price is 167,400 yen (tax included)
  • Mounts for Canon, for Nikon, for sigma
  • Release Date April 22

Drop the 18-35 and this in a bag with your upcoming C100 mkIII, and you can produce almost anything you want for a very accessible price.
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What an awesome lens. The 18-35mm sigma was the second lens I have ever bought and I hardly use anything else. the 50-100 f1.8 sounds like a great big brother to this lens. Can't wait.
 
I agree with some of you . Sigma is not fully support firmware . My case with sigma shows exactly that 18-35 does not work as good like canon lens , everyone should remember that . Anyway I am waiting how good 50-100 gonna be , do not forget if canon would like to make this lens , price will be at lest twice more .
 
Parrot said:
I am saying that Sigma USA Support told me that Sigma made the decision to not test nor support the Canon Cinema EOS series of cameras. I obviously found that decision rather strange ...
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I assume it's due to either legal reasons or some form of an existing arrangement between Sigma and Canon.

Do any Metabones or other adapters work on the Cinema series?
 
DLD said:
I assume it's due to either legal reasons or some form of an existing arrangement between Sigma and Canon.

Do any Metabones or other adapters work on the Cinema series?
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Not legal reasons. Cost reasons. Sigma can't support everything so they drew a line. Reluctantly. Or so it was explained to me. There is no 'arrangement' between Sigma and Canon. It's all reverse engineering as Canon doesn't share their EF mount data with anybody. (Or so Canon Support told me.) Basically: Sigma Art lenses might work, or they might not work, with Canon Cinema EOS cameras.

And AFAIK there's no Metabones adapter for Cinema EOS cameras.
 
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Eric Coughlin said:
Can someone confirm if the Sigma 50 f/1.4 Art works with the Canon C300 Mark II?
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Yes, I have tested the Sigma 50/1.4 (two copies) with my Canon C300mk2 and they both worked fine. Iris, Autofocus, Peripheral Illumination Correction, etc, etc.
Other Sigma lenses confirmed working on C300mk2: 24/1.4 Art, 35/1.4 Art, 18-35/1.8 Art and 50-150/2.8 OS. (Sorry for repeating, new readers tend to only read the latest posts.)
 
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Parrot said:
Not legal reasons. Cost reasons. Sigma can't support everything so they drew a line. Reluctantly. Or so it was explained to me. There is no 'arrangement' between Sigma and Canon. It's all reverse engineering as Canon doesn't share their EF mount data with anybody. (Or so Canon Support told me.) Basically: Sigma Art lenses might work, or they might not work, with Canon Cinema EOS cameras...
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So, there's a different tech for Canon's consumer line than in their Cinema EOS line? Or does Cinema EOS line disable the auto features on non-Canon lenses?

I would agree on the reverse engineering angle bit but I would think that, once you cracked the AF for the hybrid, lower end models, it doesn't take long to do likewise for the pro/cinema line.
 
DLD said:
So, there's a different tech for Canon's consumer line than in their Cinema EOS line? Or does Cinema EOS line disable the auto features on non-Canon lenses?

I would agree on the reverse engineering angle bit but I would think that, once you cracked the AF for the hybrid, lower end models, it doesn't take long to do likewise for the pro/cinema line.
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The way I understand it is that Canon doesn't disable anything. Canon just doesn't share any data about their EF mount with anybody. Canon adds features through the release of new cameras or through firmware upgrades. Typically not all of Canon's older lenses are compatible with new features. It costs money for 3rd party lens manufacturers to reverse engineer all the changes, so they need to prioritize. Sigma chose to not prioritize the Cinema EOS line as it apparently wasn't worth the expense.

I have previously experienced that a 3rd party EF adapter became problematic after a firmware upgrade on C300mk1. I presume the same thing could happen with C300mk2 firmware upgrades. Canon EF mount is, after all, an Electronic Mount.
 
Ya, that makes sense. The weird thing though is they are sort of/kind of disabling the 3rd party hacks via firmware, forcing them into rewriting their own hacks. It's going to be interesting to see how Canon glass goes with the 3rd party adapters on non-Canon equipment (i.e., Sony), the reverse of the above. IMO, if Sony wants to make FE de facto open-source, they'll be getting a huge advantage in some sectors of the market. It reminds me of the old VHS vs. Beta wars of the era long gone by.
 
I just received the 50-100 1.8. Haven't done scientific testing or anything, but here are my takeaways after briefly playing with it: Dual Pixel auto focus seems to work well with the C100 mk2. Not seeing any light loss when zooming in. Holds its focus relatively well through a zoom. At 1.8 and focusing on something as closely as possible, focus only stiffed a few centimeters as I zoomed in.
 
can you tell us more about the lens, is it as good as the 18-35 1.8? what are your thoughts on it overall?



drummondb said:
I just received the 50-100 1.8. Haven't done scientific testing or anything, but here are my takeaways after briefly playing with it: Dual Pixel auto focus seems to work well with the C100 mk2. Not seeing any light loss when zooming in. Holds its focus relatively well through a zoom. At 1.8 and focusing on something as closely as possible, focus only stiffed a few centimeters as I zoomed in.
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