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automorphism · 11-26-2016, 08:40 PM

I am looking into buying a manual focus 85mm f/1.4 lens for Pentax. I found two on B&H:

Samyang 85mm f/1.4 Aspherical Lens for Pentax SY85M-P B&H Photo

Rokinon 85mm f/1.4 AS IF UMC Lens for Pentax K 85M-P B&H Photo

According to some past threads and the lens review section they are supposed to be the same lens, but according to the B&H website only one of them, the Rokinon, advertises rounded aperture blades. So is this just because the pages are slightly different, or does the Samyang lack rounded aperture blades?

Can anyone with the Samyang version confirm?

Outis · 11-26-2016, 08:59 PM

This site says they're not rounded. OTOH the bokeh looks really nice, regardless.

automorphism · 11-26-2016, 09:20 PM

Wow thanks for finding that!

ScooterMaxi Jim · 11-26-2016, 10:49 PM

I have the Rokinon, and I can confirm that the 8-blade diaphragm is straight bladed. Also, by around f/8 and beyond it oddly gets a bit oblong, but that doesn't trouble me because it is rarely stopped down past f/4. And, yes, the bokeh at the more wide-open apertures are about as good as it gets. In my experience,and to some surprise, rounded blades - or the lack - often are not as big a deal as assumed.

**Scorpio71GR** · 11-27-2016, 07:01 AM

As far as I know they are all the same lens, just rebranded under different names. I have the Rokinon and it can produce some nice bokeh even with the straight blades.

automorphism · 11-29-2016, 10:44 PM

Great, thanks for the confirmation folks. I was a bit confused by the B&H website because it does state rounded for the Rokinon version. But the bokeh does indeed look nice and I think I'll go ahead and get it one of these days anyway!

Outis · 11-30-2016, 08:59 AM

Yay! Glad we could help!

11-26-2016, 08:40 PM	#1
automorphism Veteran Member Join Date: Jun 2015 Location: Ontario, Canada Photos: Albums Posts: 791	Samyang vs. Rokinon 85mm f/1.4 I am looking into buying a manual focus 85mm f/1.4 lens for Pentax. I found two on B&H: Samyang 85mm f/1.4 Aspherical Lens for Pentax SY85M-P B&H Photo Rokinon 85mm f/1.4 AS IF UMC Lens for Pentax K 85M-P B&H Photo According to some past threads and the lens review section they are supposed to be the same lens, but according to the B&H website only one of them, the Rokinon, advertises rounded aperture blades. So is this just because the pages are slightly different, or does the Samyang lack rounded aperture blades? Can anyone with the Samyang version confirm?

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11-26-2016, 08:59 PM	#2
Outis Veteran Member Join Date: Apr 2014 Location: Cambridge, MA Posts: 935	This site says they're not rounded. OTOH the bokeh looks really nice, regardless.

11-26-2016, 09:20 PM	#3
automorphism Veteran Member Join Date: Jun 2015 Location: Ontario, Canada Photos: Albums Posts: 791 Original Poster	Wow thanks for finding that!

11-26-2016, 10:49 PM	#4
ScooterMaxi Jim Veteran Member Join Date: Jul 2009 Location: Minnesota Posts: 1,520	I have the Rokinon, and I can confirm that the 8-blade diaphragm is straight bladed. Also, by around f/8 and beyond it oddly gets a bit oblong, but that doesn't trouble me because it is rarely stopped down past f/4. And, yes, the bokeh at the more wide-open apertures are about as good as it gets. In my experience,and to some surprise, rounded blades - or the lack - often are not as big a deal as assumed.

11-27-2016, 07:01 AM	#5
Scorpio71GR Loyal Site Supporter Join Date: Nov 2014 Location: Michigan Photos: Gallery \| Albums Posts: 6,036	As far as I know they are all the same lens, just rebranded under different names. I have the Rokinon and it can produce some nice bokeh even with the straight blades.

11-29-2016, 10:44 PM	#6
automorphism Veteran Member Join Date: Jun 2015 Location: Ontario, Canada Photos: Albums Posts: 791 Original Poster	Great, thanks for the confirmation folks. I was a bit confused by the B&H website because it does state rounded for the Rokinon version. But the bokeh does indeed look nice and I think I'll go ahead and get it one of these days anyway!

11-30-2016, 08:59 AM	#7
Outis Veteran Member Join Date: Apr 2014 Location: Cambridge, MA Posts: 935	Yay! Glad we could help!

Samyang vs. Rokinon 85mm f/1.4

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