IBC 2016 Sigma Cinema Lenses

I agree and if the Sigmas are the same price as the Tokina's then even better. I do like the sound of the Tokina 18mm T1.5 as it would not come off my camera much.
 
Pure conjecture, but the Tokinas sound like they have less compromise in the design than the Sigmas: all-new glass, 300 degree focusing, more uniform housings and weight, new witness marks.

So my prediction (wishful thinking really...) is the Sigmas will come in less expensive.
 
I guess Sigma don't know how to price them yet. With all the new glass being announced your wishful thinking may come true. One good thing about the Sigmas, we know the glass is awesome.
 
Sigma-Announces-Cinema-Lens-Line-18-35mm-T2.0.jpg


More information on the Sigma lenses.

http://www.newsshooter.com/2016/09/09/ibc-2016-hands-on-with-the-new-sigma-cine-lenses/


The known specs so far....

  • All lenses have a 180 degree focus throw
  • All optics are the same as the Sigma ART stills lenses
  • All lenses are housed in a metal body
  • All lenses have a 95mm front diameter
  • All lenses have an 82mm front thread apart from the 20mm prime which can't mount a screw-in filter
  • All lenses have a removable lens support foot
  • The zoom lenses are not 100% parfocal
  • All the lenses are available in Canon EF, Sony E and PL mount apart from the 24-35 T2.2 which is not available in PL

The prices are to be decided as Sigma probably want to price them under the competition.
 
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Tokina is launching at $5k which seems like a major mistake. We'll see.

When Sigma came out with theirs I was thinking $2500 for a prime. I still think that is correct. Sigma wants their cine lenses to sell to everyone with a matte box on their DSLR. "No one", relatively speaking, is buying Canon cine prime set. And before you say "hey, I did", I'm pretty sure Sigma is targeting a much larger user base. But they'll still welcome everyone on Reduser.net who (and there's plenty of them) is planning on buying too, of course.

But for enthusiasts to buy into a set like these, en masse, I think they need to be around $2500. I don't get the feeling the XEENs are flying off the shelves even if they are considered a valid choice.
 
AndreeOnline said:
I think they need to be around $2500. I don't get the feeling the XEENs are flying off the shelves even if they are considered a valid choice.
Click to expand...

In Canada the Xeen's are only priced slightly under the Canon CN primes and Canon is offering so many discounts a 3 lens CN-E prime set comes out at pretty much the same price as 3 Xeens. One dealer is moving a lot of the CN-E lenses because of the aggressive discounting and bundle savings in Canada on these. Not to mention 3 years 0% financing.

Pricing is key to success in this lower level cine lens because Canon is very aggressive.
 
JackCarter said:
Sigma say the lenses will be under $5,000 US

http://www.newsshooter.com/2016/09/...-the-new-cinema-lenses-will-be-under-5000-us/

Click to expand...

It's great that Sigma is responding to the video market :) According to the video above it appears that new lenses will be announced first as still versions and then as cine versions using the same glass to lower production cost. Hopefully that means that this new line of cine lenses wont slow down the introduction of new lenses from Sigma. While I heartily welcome the new cine lenses, I eagerly await Sigma releasing Art versions of the 24-70mm f/2.8 and 70-200mm f/2.8 zooms and 85mm f/1.4 and 135mm f/2 prime lenses. As far as I know, these zooms are some of the most popular lenses for general photography and the primes some of the most popular for portraiture, so I'm wondering why Sigma hasn't released any of them yet? Or am I missing something?
Here's wishing the "delay" is because they are working on a surprise like making the 85mm an f/1.2 and the 135mm an f/1.8 as well as perfecting their autofocus accuracy and consistency :)
 
The argument has always been that lenses are technically not parfocal unless marketed, but copies do vary, and some lenses may be very close while others are not.
 
It's a bit of a worry really, what does that mean for the accuracy of witness marks on the lens? They'll only correlate properly at certain focal lengths? That's a big issue.
 
I'll be curious to hear a measure on this question. They're only 2:1 zoom ratios so that may keep them within an acceptable tolerance. The shift in backfocus while zooming is referred to as the Zoom Curve. I have to check my old notes but I believe max tolerance for this is +/- 30 microns across the range. This is obviously something that needs to be measured on a collimator.

This may be a problem or it may be much to do about nothing. You would be surprised by what I have seen in Zoom Curves on very expensive cine zooms. Then again there is also the original prototype Canon 30-300, which was the first lens I ever saw with absolutely zero shift in the Zoom Curve. Generally there has to be a bit of slop because otherwise all the mechanics would bind, but this lens was completely static in the Zoom Curve. Impressive to say the least.
 
They may be hand-picking the copies that are closest to being parfocal. Because yes, that's a thing. Link.
(or maybe that woldn't work, since optical adjustments seem to affect how parfocal a copy of a lens is)
 
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