GL Optics Sigma 18-35 Rehoused - Group Buy

[Patrick Tresch]

I am seriously interested in this lens and am trying to decide between the 120° and 300° versions. Most of my other glass is cine-modded Contax, so I am used to dealing with limited focus rotation. However, my kit rents frequently, and I'd like to choose the most desirable version for the rental market. Unfortunately, I'm on a budget, so the cost difference is significant. Any thoughts?

Hello,

I went with the 300° version because the throw between inf and 1 m is really small.
Here a picture from David's video 300° version. I guess that the the throw of the 120° version still will be smaller.

Pat

 

[Dan Kanes]

Selling a BRAND NEW 18-35 F1.8 sigma GL Optics with the following options included:
PL and Canon EF Mount
300 degree focus rotation

Literally brand new.

Decided I need the money for another project I'm looking into.

Selling at Group buy Cost.

Link to ad here:

#1

 

[Dan Kanes]

Price drop on this - totally unused, original 1 year warranty included.

http://www.reduser.net/forum/showth...oom-lens-PL-and-EF-canon-Mount-300-degree-ver

 

[Mike P.]

Can anyone with access to the Sigma and RPPs post .r3d stills of the 18-35 (wide-open) and a 50mm or 85mm RPP (also wide open)?

Wanna see if they match anywhere close to each other (sharpness, colour, contrast).

 

[Tommaso Alvisi]

Yeah, it would be interesting to compare it color and contrast wise to other lenses!

 

[David Kellermann]

Can anyone with access to the Sigma and RPPs post .r3d stills of the 18-35 (wide-open) and a 50mm or 85mm RPP (also wide open)?

Wanna see if they match anywhere close to each other (sharpness, colour, contrast).

If someone owns RPPs in Switzerland / south Germany, we could meet and test them.

 

[Tommaso Alvisi]

I join David in the offer.

I'm in Italy and I have a Sigma 18-35, I'm available for a test too!

 

[Patrick Tresch]

Can anyone with access to the Sigma and RPPs post .r3d stills of the 18-35 (wide-open) and a 50mm or 85mm RPP (also wide open)?

Wanna see if they match anywhere close to each other (sharpness, colour, contrast).

Here you can see what Antoine Baumann and I did today. A simple test to get an overall impression shot on Dragon 6k 6144x3160.

Pat
GL_@18mm_T1.8


RPP_18mm_T1.8



And some vignetting test at Dragon 6k 6144x3160
GL_@18_T16


RPP18_T22

RPP25_T22

RPP35_T22


More tests to come.

 

[Jiri Vrozina]

Hello,

I went with the 300° version because the throw between inf and 1 m is really small.
Here a picture from David's video 300° version. I guess that the the throw of the 120° version still will be smaller.

Pat

But i see Iris Throw is very short.....:-(. Like on Canons CNEs

 

[Patrick Tresch]

But i see Iris Throw is very short.....:-(. Like on Canons CNEs

Yes but not an issue for me. It's what I would call "usuable".

Pat

 

[Patrick Tresch]

Here a center crop of the 18mm GL and RPP at T1.8

 

[Patrick Tresch]

Another center crop of the 35mm GL and RPP at T1.8

 

[Tommaso Alvisi]

DXO labs rated the 18-35 as a T1.8 but I think it's more like a T1.9 or T2.0...

from the pics...

or maybe it's just the lower contrast of the RPP which tricks the eye!

The sharpness difference is quite noticeable!

My copy of the Sigma seems sharper than that, WO @ 18mm...mmm

 

[Patrick Tresch]

Here is a quick video about the zoom vignetting:

https://vimeo.com/86447447

Stops at 18mm / 24mm / 35mm and back.

You can see that aroung 20mm it fully disappear in 6k.

Pat

 

[Patrick Tresch]

DXO labs rated the 18-35 as a T1.8 but I think it's more like a T1.9 or T2.0...

from the pics...

or maybe it's just the lower contrast of the RPP which tricks the eye!

The sharpness difference is quite noticeable!

My copy of the Sigma seems sharper than that, WO @ 18mm...mmm

Don't forget we are out into the wild and light could have changed. This test is not to rate the T stop of the lens. But you are probalby right that the GLoptics Sigma has a tiny bit less light (1/5th) than the RPP.

https://vimeo.com/86455363

Pat

 

[Mike P.]

Man... I hope someone ends up selling theirs for the group buy price... Or another group buy happens in a few months (just after NAB?)... Someone has to dislike this lens, right?

Either that or the rumoured 24-70 "t2" is just as easily rehoused...

 

[Abiodun Shote]

...Or another group buy happens in a few months (just after NAB?)...

+1.

 

[Christopher Barrett]

I would sell mine... except that I FREAKIN LOVE IT!!!

 

[Bob Gundu]

I would sell mine... except that I FREAKIN LOVE IT!!!

Ha ha.

 

[David Kellermann]

Man... I hope someone ends up selling theirs for the group buy price... Or another group buy happens in a few months (just after NAB?)... Someone has to dislike this lens, right?

Either that or the rumoured 24-70 "t2" is just as easily rehoused...

There wont be any group buy for the GL optics 18-35 anytime soon, but we're preparing right now a group buy for the new GL rehoused Leica R lenses. More info soon

Here's the list of Leica lenses which GL optics is rehousing. The list isn't final yet, since not all lenses are finished yet and there still might be some issues prohibiting one or an other lens to get rehoused. I'll announce the price (also for the group buy) as soon as all the lenses are finished and all the specs are finalized.

High Speed Set

19mm F2.8 Elmarit V2
24mm F2.8 Elmarit (not finished yet)
or
28mm F2.8 Elmarit
35mm F1.4 Summilux E67
50mm F1.4 Summilux E55
80mm F1.4 Summilux E67
135mm F2.8 Elmarit

Regular Speed Set

19mm F2.8 Elmarit V2
24mm F2.8 Elmarit (not finished yet)
or
28mm F2.8 Elmarit
35mm F2.0 SUMMICRON E55
50mm F2.0 SUMMICRON E55
90mm F2.0 SUMMICRON
135mm F2.8 Elmarit

Optional

15mm F3.5 SUPER-ELMAR (not finished yet)
60mm F2.8 Macro Elmarit E55
100mm F2.8 Macro APO Elmarit E60 (not finished yet)
180mm F2.8 Elmarit E67