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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Sigma Cinema Lenses

I think they need to beat GL optics on price and they sell them as:

G.L Optics 50mm T1.6 PL version Lens rehouse service
(1) Base Lens is Sigma ART 35mm F1.4;
(2) New designed Focus/Iris control system;
(3) Stainless steel PL mount and 6063 alumium rehouse Lens body;
(4) 95mm diameter front ring size;
(5) 0.8 module gears;
(6) 1 year warranty period offered by G.L Optics from the date of delivery(The warranty service of original Canon lens isn't avaible after the rehouse work);
(7) FOB price: 3250 USD(Custom provide base Lens is acceptable, will reduce 800 USD).

Then I think you can buy the GL lens with swappable mounts. Sigma version of the same lens you have to send in to swap mount.
 
The zooms are not parfocal, just close, and the 50-100 has focus breathing, so I think (not that anyone here cares what I think) that they will be under $3000 per lens for the zooms. I think the other lenses will be about the same and in sets less expensive still. Sigma will not be disruptive with a high price, and they like to be.
 
Jon Dishler said:
The zooms are not parfocal, just close, and the 50-100 has focus breathing, so I think (not that anyone here cares what I think) that they will be under $3000 per lens for the zooms. I think the other lenses will be about the same and in sets less expensive still. Sigma will not be disruptive with a high price, and they like to be.
Click to expand...

Sigma's CEO has so far said they will probably be under $5k a piece...

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

The fact that they're not parfocal, and the breathing is no different than the still versions makes me wonder how these lenses bring "a fundamental change in digital film production".
 
Nick Junkersfeld said:
Sigma's CEO has so far said they will probably be under $5k a piece...

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

The fact that they're not parfocal, and the breathing is no different than the still versions makes me wonder how these lenses bring "a fundamental change in digital film production".
Click to expand...
The lenses can be easily enough made parfocal by the new mechanical design.
Same goes for breathing:
All the nonsense about cine lens versions of Zeiss or Canon breathing less than their still counter parts is simply perceived because of the longer focus throw on the scale. You can whip focus much quicker when it's quarter turn from end to end than when it's a half turn or full turn. (has anyone actually measured the breating between them?)Sigma can just as easily apply this trick in their cine lens line....
The actual breathing properties are inherit-ant to the optical design and a calculated compromise to keep the lens small , light, fast, evenly lit, simple, inexpensive to manufacture, etc, etc, etc..
 
Nick Junkersfeld said:
Sigma's CEO has so far said they will probably be under $5k a piece...

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

The fact that they're not parfocal, and the breathing is no different than the still versions makes me wonder how these lenses bring "a fundamental change in digital film production".
Click to expand...

Two things... This could be "baiting" the industry... under $5000 could literally mean $0 to $4,999

one could also interpret that "All of them will be under $5000" could mean you could afford all of them for under $5000 combined - however that doesn't really make sense with 5 primes and two Zooms.

Either Way - it's not necessarily fair to Lump the Primes and the Zooms in together (I happen to be a fan of both)...

The Primes don't have super bad breathing.

Only one of the lenses has what I would consider potentially "problematic" breathing and that would be the 50-100...

The primes have Master prime (or above ?) quality Draw and sharpness... and we are talking about a whole set for probably under the cost of a single Master Prime...

The primes Cover FF/VV ...Zooms don't (unless you get the 24-35 EF only)...

Personally, on the zoom front, I'm waiting for their 24-70 T2.2 or whatever "God Zoom" they create as I already have a GL modified 18-35 300' that's a perfect specimen.

I'd say that's disruptive.

Also, just because these don't have motors in them yet, or don't have 300' rotation - doesn't mean future versions won't.

Sigma Art are just that... a work of Art.

Art Changes over time, and I wouldn't doubt that they will continue to create new lenses and help shape the face of the industry.

This is a fantastic sign that they are willing to dip their toes in a new market and try something different.
 
Jacek Zakowicz said:
The lenses can be easily enough made parfocal by the new mechanical design.
Same goes for breathing:
All the nonsense about cine lens versions of Zeiss or Canon breathing less than their still counter parts is simply perceived because of the longer focus throw on the scale. You can whip focus much quicker when it's quarter turn from end to end than when it's a half turn or full turn. (has anyone actually measured the breating between them?)Sigma can just as easily apply this trick in their cine lens line....
The actual breathing properties are inherit-ant to the optical design and a calculated compromise to keep the lens small , light, fast, evenly lit, simple, inexpensive to manufacture, etc, etc, etc..
Click to expand...


Jacek, I'm not following your comment in regards to these lenses for two reasons:

1 - Sigma has stated they've made no changes to the optical design of the high-speed zooms, and specifically said they're not parfocal zooms. So no matter how easily they can be made parfocal, Sigma has shown no indication of making that design change.

2 - The high-speed zooms have a 180 degree focus throw according to Sigma, that's more in short-throw still lens territory than a lot of cinema lenses offer.


I'm not trying to trash Sigma here, but some of these oversights disappoint slightly.
 
Nick Junkersfeld said:
Jacek, I'm not following your comment in regards to these lenses for two reasons:

1 - Sigma has stated they've made no changes to the optical design of the high-speed zooms, and specifically said they're not parfocal zooms. So no matter how easily they can be made parfocal, Sigma has shown no indication of making that design change.

2 - The high-speed zooms have a 180 degree focus throw according to Sigma, that's more in short-throw still lens territory than a lot of cinema lenses offer.


I'm not trying to trash Sigma here, but some of these oversights disappoint slightly.
Click to expand...
All I'm saying is that good new mechanics- as the CEO stated were in the cine lenses- can fix both issues parfocal and breathing(or the perception of breathing....)
 
Is there any footage available online shot on these lenses? Breathing (heavy of not :tongue_smilie: ) is the biggest concern.
 
What would be the price on the zoom?. Because I just bought a GL optics rebuild Sigma 18 - 35 mm with 360 focus an its great on a RED EPIC DRAGON (I have from the retailer until I get the Scarlet-W i ordered)... I paid 3500 USD an its almost up there with the Zeiss..... It would be practially the same as this. So the only thing is the price.
 
I can put out, I did some behind the scenes from a commercial we did. Have to wait for a week thow because some of the participents are secret for one week. Its a rebuild thow, but would be the same..
 
...well - Just got my Latitude and did a quick test with the 50 ART and something is weird. I hope I am not doing anything wrong, but the AF motor on the lens it's loud and you can clearly see it works in steps, you can't do a very fluid focus rack and sometimes if you go to fast you can see something like a "focus slip".

I tried with another 2 Sigma zoom lenses, both non-ART but same HSM focus motors. They behave the same, only that the ART is a bit quieter.
 
Andrei Goaga said:
...well - Just got my Latitude and did a quick test with the 50 ART and something is weird. I hope I am not doing anything wrong, but the AF motor on the lens it's loud and you can clearly see it works in steps, you can't do a very fluid focus rack and sometimes if you go to fast you can see something like a "focus slip".

I tried with another 2 Sigma zoom lenses, both non-ART but same HSM focus motors. They behave the same, only that the ART is a bit quieter.
Click to expand...

I tested both the Art 35 and 50. The 35 works much better, focus pull with foolcontrol is very smooth. Similar to the GDU. However, I was not sold by the 50. As you said, AF is stuttering. For comparison I pulled focus manually by hand and it was smooth. So I guess it has something to do with the internal motor.
Too bad because optically they are superb.
 
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