Optar Illumina S16 16mm Test

[shijan]

Bokeh test T1.2 and T2.8. Tungsten lighting.

[shijan]

Any updates on this?

If someone interested it is still on sale. I use this lens time to time. The image is really nice.

[voxndot]

Any updates on this?

JK

[shijan]

Few more test images of this lens in other thread http://bmcuser.com/showthread.php?20...-S16-16mm-Test

[Pewwinck]

If someone interested, this lens is for sale now because i find that 12mm fits better for my workflow. The lens is slightly de-centered but pretty usable in real life. For perfect results needs to be repaired somehow.
P.M me if you interested. Ask $500 for lens + $100 for HAWK'S FACTORY ARRI B to M4/3 adapter.

I could be interested could you email me ?
jeanpenninck@gmail.com
thx

[Robert Hart]

it can't be adapter. i measure it from all sides with precise tools and it is perfectly uniform. The lens sits in the adapter without any shifts. Also when i flip the lens to 180 degree in the adapter the mismatched focus effect also flips to another side.

Some PL-Mount adaptors may have a sharp front inner corner where the flange meets the shoulder. On the ARRI B-Mount on the lens, there may be a fillet radius in that matching corner which the sharp corner of the adaptor will ride high on. If there is some clearance between the B-Mount shoulder and the PL-Mount adaptor, then it is likely the adaptor may hang high on one side of the fillet radius which will de-centre the optical axis of the lens and yield a soft edge on one side of the image. Abnormal wear of a fillet radius may also throw it off. The key clearance slot in the PL-Mount to ARRI B adaptor will also allow its side of the flange face to fit slightly closer and de-centre the lens if the mount is hanging on a fillet radius. It is no big deal to dress out a very small clearance chamfer from the sharp inner corner of the PL-Mount adaptor. This will then permit full face contact across the inner flange. Best though to get a lens tech to do it for you. Hard particles getting onto the rear element and then scratching it next cleaning time are not funny.

[shijan]

If someone interested, this lens is for sale now because i find that 12mm fits better for my workflow. The lens is slightly de-centered but pretty usable in real life.
P.M me if you interested. HAWK'S FACTORY ARRI B to M4/3 adapter.

[Denny Smith]

Yes, an optical design copy does not necessarily mean an exact copy. The Illumina and Elite S16 lenses have smaller front lens (and probably some of the internal) optical elements, and except for the 8 and 9.5mm, have smaller projected image circles also. The design has been tweaked to allow for these changes. Another basic Zeiss design has been copied in a lot of different implementations, the late 19th Century simple Tessar design, which has been copied by many lens makers in the 20th Century, both in thenUSA, Japan and Russsia. You can change and imporve a design by the way you shape the individual elements, but still have the same basic design with respect to the number and type of optical elements.

So, obviously, they do differ in some respect, another difference Howie pointed out is the Iris also, with the Zeiss lens having a 3-blade arrangement and the Illumina design with more traditional multi-blade design, with an almost round Iris opening, instead of the Zeiss teiangle. Similar in many ways yes, but different in others. The Zeiss also has the better coatings on their newer lenses, including the MK2 and Mk3 Super Speeds. They also have a slight,y different IQ, with the Illuminas favoring a warmer, a Angenieux like image, while the Zeiss a little cooler technical look.
Cheers

[lluiscl]

From what I have discovered in my Illumina research, the lens optical design is basically a copy of the Zeiss S16 and S35 Distagon and Planar (35/50mm) lens designs, with only some minor changes.
Cheers

But the optics size are really not the same... Comparing them Zeiss is always bigger, as shown in the picture (both 12mm focal, same 80mm external front).12mm.jpg

[Denny Smith]

From what I have discovered in my Illumina research, the lens optical design is basically a copy of the Zeiss S16 and S35 Distagon and Planar (35/50mm) lens designs, with only some minor changes.
Cheers

[shijan]

If anyone interested there are Optar S16 optical schemes extracted from KMZ catalog. I don't remember the source where i download this catalog, but it archived here: https://www.dropbox.com/s/we87g00n7s...logii.doc?dl=0
Wonder if someone can find how they compare to Zeiss optical schemes.

Optar 8mm (Angle of view 84°)
OPTAR 8mm.png

Optar 9.5mm (Angle of view 75°30')
OPTAR 9.5mm.png

Optar 12mm (Angle of view 62°16')
OPTAR 12mm.png

Optar 16mm (Angle of view 48°)
OPTAR 16mm.png

Optar 25mm (Angle of view 21°55')
OPTAR 25mm.png

Optar 50mm (Angle of view 21°55' ???seems mistake in catalog???)
OPTAR 50mm.png

[Joshua Cadmium]

If anyone is interested, I still have a 50mm for sale.

[Denny Smith]

Yes Kroaton, I do, send me a PM with your email address and I can send them to you. I shot the 16mm, and 25mm Illumina on the PenF, along with the Zeiss 9.5 and 12mm for comparison. The Illumina projected image was larger. The Illimina 16mm and up will cover the BMCC with over projection (the 16mm useable projection, will be just slightly larger around .5mm than the sensor).
Cheers

Danny, do you still have any pictures taken with the Optars and the Pen F?

I'm thinking of getting an 8-16mm lens set for my BMPCC and BMCC, but I can't tell if a clean 2.35/2.40 extract would be possible on the BMCC without seeing how much the lenses project past specification.
I made some rough drawings based on the BMCC sensor size and the lens circle sizes provided by Lumatech, and it looks like the corner coverage/sharpeness depends entirely on lens overprojection.

http://imgur.com/a/AcfzY

[Nomad]

Then the lens is de-centered.

[shijan]

May be pl/arri b adapter problem. If this is not seen on other lenses than this lens is defect

it can't be adapter. i measure it from all sides with precise tools and it is perfectly uniform. The lens sits in the adapter without any shifts. Also when i flip the lens to 180 degree in the adapter the mismatched focus effect also flips to another side.