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Archive 2011 · Rokinon 85mm vs Zeiss Quick Test
  
 
flashinm
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p.2 #1 · Rokinon 85mm vs Zeiss Quick Test


Yes, but neither the Rokinon nor the Sigma display the microcontrast Zeiss is known for. I think the higher contrast shows up in all aspects of the image, including the out of focus portions leading to a busier, more detailed bokeh. I have never seen a Zeiss lens that can produce bokeh as smooth as the Rokinon. In fact, I don't think it's possible with T* coatings. That's not to say one is better than the other, but I don't think it's possible to have both. The same thing that makes Zeiss lenses wonderful for details, prevents them from having buttery smooth bokeh.


May 01, 2011 at 04:05 PM
flashinm
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p.2 #2 · Rokinon 85mm vs Zeiss Quick Test


^ Sounds like I need to check out the 35mm.


May 01, 2011 at 04:20 PM
wayne seltzer
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p.2 #3 · Rokinon 85mm vs Zeiss Quick Test


flashinm wrote:
Yes, but neither the Rokinon nor the Sigma display the microcontrast Zeiss is known for. I think the higher contrast shows up in all aspects of the image, including the out of focus portions leading to a busier, more detailed bokeh. I have never seen a Zeiss lens that can produce bokeh as smooth as the Rokinon. In fact, I don't think it's possible with T* coatings. That's not to say one is better than the other, but I don't think it's possible to have both. The same thing that makes Zeiss lenses wonderful for details, prevents them from having
...Show more
The new Zeiss 35/1.4 has very smooth bokeh and the old contax n 85/1.4 has smooth bokeh.
Also Sony-Zeiss ZA 135/1.8 has very smooth bokeh.



May 01, 2011 at 04:22 PM
wayne seltzer
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p.2 #4 · Rokinon 85mm vs Zeiss Quick Test


flashinm wrote:
^ Sounds like I need to check out the 35mm.

Yes, it is a smooth operator!
Under-corrected SA design makes it a perfect softer/dreamier look portrait lens at the wide end and then super sharp normal Zeiss microcontrast lens stopped down.



May 01, 2011 at 04:30 PM
AhamB
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p.2 #5 · Rokinon 85mm vs Zeiss Quick Test


wayne seltzer wrote:
Also Sony-Zeiss ZA 135/1.8 has very smooth bokeh.


The Contax Planar 135/2.0 probably does so too?



May 01, 2011 at 04:33 PM
crazeazn
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p.2 #6 · Rokinon 85mm vs Zeiss Quick Test


at the cost of the rokinon and the zeiss 85 2.8...you could pretty much have both for the price of 1 canon 85 1.8.. great fliexibility there.


May 01, 2011 at 04:47 PM
plasticmotif
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p.2 #7 · Rokinon 85mm vs Zeiss Quick Test


Threads like this really make me want to go the Samyang 85 + Voigt 125 route.


May 01, 2011 at 07:02 PM
carstenw
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p.2 #8 · Rokinon 85mm vs Zeiss Quick Test


The Samyang/Rokinon has very good optical quality, but the time I tried one, I found that the stiff focus ring, and loose hood ruined the experience for me a bit. Have they tightened up the construction quality at all in recent times?


May 01, 2011 at 07:09 PM
cputeq
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p.2 #9 · Rokinon 85mm vs Zeiss Quick Test


I really liked my Rok'85 when I had it on the D700, great lens. I hated the hood, though, but for $259 shipped it was a real steal.

My only complaint with the lens was the lower-than-normal contrast - I often found myself having to coax the image into what I wanted a bit more than normal....again, then I had to remind myself it was only $259




May 01, 2011 at 07:12 PM
ersatz
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p.2 #10 · Rokinon 85mm vs Zeiss Quick Test


crazeazn wrote:
at the cost of the rokinon and the zeiss 85 2.8...you could pretty much have both for the price of 1 canon 85 1.8.. great fliexibility there.


The c/y 85/2.8 Sonnar goes for about the same price as a Canon 85/1.8 which is about $300-350 here.




May 01, 2011 at 07:24 PM
 

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flashinm
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p.2 #11 · Rokinon 85mm vs Zeiss Quick Test


I agree that the focus ring is too stiff, but my hood fits nice and tight.


May 01, 2011 at 07:46 PM
ScooberJake
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p.2 #12 · Rokinon 85mm vs Zeiss Quick Test


I thought the Rokinon hood was junk, so I bought a Nikon replacement metal hood. Still wish it was bayonet rather then screw mount, but it'll do.

Agreed on the contrast. I keep intending to buy a chip for mine, so I can have Lightroom bump the contrast a bit automatically.



May 02, 2011 at 03:18 PM
ManWearPants
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p.2 #13 · Rokinon 85mm vs Zeiss Quick Test


The CY used here is AEG. Would a MMG or MMJ have made any difference to the results?


May 02, 2011 at 04:10 PM
edwardkaraa
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p.2 #14 · Rokinon 85mm vs Zeiss Quick Test


While the Rokinon delivers excellent performance, I am always wary of cheap products. In my experience, you get what you pay for. This doesn't mean expensive products are always better, but there must be a reason for the unusually low price. I don't know about the Rokinon because I have never looked into getting one, but I would expect sample variations, product deterioration with use and age, especially if it uses non-metal focusing gear and organic lens elements. The optical formula seems to be excellent though.


May 03, 2011 at 08:57 AM
RZetter
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p.2 #15 · Rokinon 85mm vs Zeiss Quick Test


Organic lens elements? Could you clarify on that point?

In my experience the build quality of the Samyang is okay when it comes to the outer appearances, but there are some flaws. First things first: The hood is awful, and becomes loose very quickly. I, like many others, bought a Nikon HN-20 knockoff metal hood to replace it. The knockoff hood is not perfect since it's a screw-on type, and can't be reverse-mounted for storage.

When I first got the lens the focusing action was quite stiff, but it loosened up with time. Now, after owning the lens for a year, I can feel that the grease in the helical has formed two surfaces: one on the helical and one on the inside of the focusing ring. When you apply enough force to the focusing ring the two surfaces kind of let go of each other and the ring moves with much less resistance. The focus damping is also a bit uneven, and turning the ring becomes heavier near MFD (which is understandable).

On my lens the front element also became loose and started to rattle, which was quite unnerving. It was an easy fix though, I just had to screw it back in to place. It seems it was not fastened with any glue, just by pressure. Image quality was still unaffected, even when the element was loose.
My lens also has a small flaw in the coating on the rear element, but it doesn't bother me since I've never seen any problems caused by it. The diaphragm blades don't stop down perfectly even, but that also belongs in the "who cares"-category.

Wow, that was a long list. Anyone want to buy a Samyang 85mm in mint condition? Just kidding, I would never sell it regardless of all its flaws.



May 03, 2011 at 11:17 AM
edwardkaraa
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p.2 #16 · Rokinon 85mm vs Zeiss Quick Test


Organic lens elements: Plastic

Many lens makers use that, including Canon, but my understanding is that Zeiss uses only mineral glass.



May 03, 2011 at 11:26 AM
kakomu
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p.2 #17 · Rokinon 85mm vs Zeiss Quick Test


RZetter wrote:
When I first got the lens the focusing action was quite stiff, but it loosened up with time. Now, after owning the lens for a year, I can feel that the grease in the helical has formed two surfaces: one on the helical and one on the inside of the focusing ring. When you apply enough force to the focusing ring the two surfaces kind of let go of each other and the ring moves with much less resistance. The focus damping is also a bit uneven, and turning the ring becomes heavier near MFD (which is understandable).


A few of my older lenses by Olympus and Nikon have a problem with uneven dampening with the focus ring.



May 03, 2011 at 05:33 PM
sebboh
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p.2 #18 · Rokinon 85mm vs Zeiss Quick Test


edwardkaraa wrote:
Organic lens elements: Plastic

Many lens makers use that, including Canon, but my understanding is that Zeiss uses only mineral glass.


aren't molded aspherical elements plastic?



May 03, 2011 at 06:21 PM
AhamB
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p.2 #19 · Rokinon 85mm vs Zeiss Quick Test


sebboh wrote:
aren't molded aspherical elements plastic?


No. Molded aspherics are pressed in a mold and they are the ones showing the onion rings in the bokeh, due to the spiral groove pattern in the mold. There are aspherics that are grinded, which is more difficult/expensive to repeat than reusing a mold.
Then there are composite aspherics that consist of a spherical glass element with a plastic layer that makes it aspherical.


Edited on May 03, 2011 at 07:44 PM · View previous versions



May 03, 2011 at 06:28 PM
kakomu
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p.2 #20 · Rokinon 85mm vs Zeiss Quick Test


AhamB wrote:
No. Molded aspherics are pressed in a mold and they are the ones showing the onion rings in the bokeh, due to the spiral groove pattern in the mold. There are aspherics that are grinded, which is more difficult/expensive to repeat than reusing a mold.
Then there are composite aspherics that consist of a spherical element with a plastic layer that makes it aspherical.


The composite lens, as you put it, is called "replica aspherical lens" by Canon and "hybrid aspherical lens" by Nikon.



May 03, 2011 at 07:03 PM
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