DemonDuck
Posts: 312
Location:
Registered: 10 Mar 2011
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John Houghton
Posts: 3487
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 22 Jan 2012 at 16:16 GMT
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Oh dear! Walimex is yet another rebranded Samyang to add to the long list.
John
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DemonDuck
Posts: 312
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Registered: 10 Mar 2011
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 22 Jan 2012 at 17:29 GMT
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John Houghton said: Oh dear! Walimex is yet another rebranded Samyang to add to the long list.
John
Yeah, I don't get it either...
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Raghav
Posts: 42
Location: Visakhapatnam, India
Registered: 6 Jun 2010
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 25 Jan 2012 at 19:31 GMT
updated: 25 Jan 2012 at 19:32 GMT
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Some sample pictures taken with the lens surface on Rokinon FB page 
goo.gl/MC0ik
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DemonDuck
Posts: 312
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Registered: 10 Mar 2011
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 25 Jan 2012 at 19:44 GMT
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Raghav said: Some sample pictures taken with the lens surface on Rokinon FB page
goo.gl/MC0ik
Does it look like not a very wide FOV to anyone else?
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DorinDXN
Posts: 2853
Location: Timisoara, Romania
Registered: 14 Nov 2006
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 25 Jan 2012 at 19:55 GMT
updated: 25 Jan 2012 at 19:56 GMT
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DemonDuck said: Raghav said: Some sample pictures taken with the lens surface on Rokinon FB page
goo.gl/MC0ik
Does it look like not a very wide FOV to anyone else?
the lens is for cameras with 2.0 crop factor, is more like 15-16 mm
cheers,
Dorin
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DennisS
Posts: 1292
Location: Los Anglels, United States
Registered: 1 Sep 2007
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 25 Jan 2012 at 21:18 GMT
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I don't see much of an improvement over the Sony 16mm kit lens + the Sony wide angle adapter. The result is the same as the Nikon 10.5 lens except that the 16mm+wide is designed by Sony for the NEX camera. What problem is this new lens solving that the stock lens+adapter from Sony does not provide? Smooth provided some sample pictures a while ago that show the quality of the lens+adapter is up to "snuff".
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Smooth
Posts: 3773
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 26 Jan 2012 at 9:10 GMT
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DorinDXN said: the lens is for cameras with 2.0 crop factor, is more like 15-16 mm
How did you come to that conclusion? The lens is made and promoted for the Sony NEX and the NEX sensor is APS-C 1.5x. Based on that 8x1.5= 12mm
Again, nobody is listening at Samyang we wanted a 180° circular 8mm fisheye and NOT a diagonal fisheye.
I'm afraid it won't be on my shopping list.
Regards, Smooth 
www.omnipix.com.au
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DorinDXN
Posts: 2853
Location: Timisoara, Romania
Registered: 14 Nov 2006
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 26 Jan 2012 at 9:58 GMT
updated: 26 Jan 2012 at 9:58 GMT
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Sorry Smooth, my fault then, I thought that is for micro 4/3
cheers,
Dorin
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Raghav
Posts: 42
Location: Visakhapatnam, India
Registered: 6 Jun 2010
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 26 Jan 2012 at 12:30 GMT
updated: 26 Jan 2012 at 12:30 GMT
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Smooth said: Again, nobody is listening at Samyang we wanted a 180° circular 8mm fisheye and NOT a diagonal fisheye.
Hi Smooth,
Sorry if I am missing some basics, would it be possible to produce an 8mm FE on a cropped to be a circular one or shouldn't it be something like a 4.5 or 5.6mm lenses?
Regards,
Raghav
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Smooth
Posts: 3773
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 26 Jan 2012 at 12:48 GMT
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Raghav said: Smooth said: Again, nobody is listening at Samyang we wanted a 180° circular 8mm fisheye and NOT a diagonal fisheye.
Hi Smooth,
Sorry if I am missing some basics, would it be possible to produce an 8mm FE on a cropped to be a circular one or shouldn't it be something like a 4.5 or 5.6mm lenses?
Regards,
Raghav
We have proven by shaving the Samyang 7.5mm MFT Fisheye that we maximise the FOV on the APS-C sensor. We don't actually want a full circle, but rather a cropped edge circle the same that it is produced when fitting say a Sigma 8mm on an APS-C/DX sized sensor (drum). I.E: 180° top to bottom and around 140° left to right (across) when the camera is in portrait orientation.
Remember the Sigma 8mm fisheye is designed based on a full size/fx 36x24mm sensor. When fitted to an APS-C sensor you retain 180° top to bottom but reduce the hfov to around 140°. Yet, it is a very proven set up.
You are right in saying a 4.5mm, 5.6mm image would give a full 180° circle on an APS-C sensor. That's 180° top to bottom and 180° left to right. Much like the Sigma 4.5mm Fisheye and the Sunex 5.6mm Superfisheye. Neither of which are optimal because you are wasting quite a large number of pixels. Only a portion of the sensor is actually being used to capture image, the rest goes to black and wasted.
The new Samyang/Rokinon 8mm f/2.8 for NEX looks to be 180° diagonal (dfov) only.
Regards, Smooth
www.omnipix.com.au
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Smooth
Posts: 3773
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 26 Jan 2012 at 13:01 GMT
updated: 26 Jan 2012 at 13:02 GMT
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Has anybody seen a picture of this reported new lens? What size is it physically?
Apart from size and the fact it's a faster lens how is it better then say the already released Samyang 8mm f/3.5 www.photozone.de/sony-alpha-aps-c-lens-tests/665-...
It would have to have something pretty serious going for it in size or picture quality (maybe price also) to warrant it's existence. Because the image fov looks to be the same or worse/less.
It must be physical size? Show me the spec sheet!
Regards, Smooth
www.omnipix.com.au
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DemonDuck
Posts: 312
Location:
Registered: 10 Mar 2011
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 26 Jan 2012 at 15:49 GMT
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Smooth said: We have proven by shaving the Samyang 7.5mm MFT Fisheye that we maximise the FOV on the APS-C sensor. We don't actually want a full circle, but rather a cropped edge circle the same that it is produced when fitting say a Sigma 8mm on an APS-C/DX sized sensor (drum). I.E: 180° top to bottom and around 140° left to right (across) when the camera is in portrait orientation.
Remember the Sigma 8mm fisheye is designed based on a full size/fx 36x24mm sensor. When fitted to an APS-C sensor you retain 180° top to bottom but reduce the hfov to around 140°. Yet, it is a very proven set up.
You are right in saying a 4.5mm, 5.6mm image would give a full 180° circle on an APS-C sensor. That's 180° top to bottom and 180° left to right. Much like the Sigma 4.5mm Fisheye and the Sunex 5.6mm Superfisheye. Neither of which are optimal because you are wasting quite a large number of pixels. Only a portion of the sensor is actually being used to capture image, the rest goes to black and wasted.
The new Samyang/Rokinon 8mm f/2.8 for NEX looks to be 180° diagonal (dfov) only.
Regards, Smooth
www.omnipix.com.au
I agree. What I would like is a cropped-180 fisheye. That's the most useful crop for use in pano photography IMHO.
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DemonDuck
Posts: 312
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Re: Samyang/Rokinon 8mm f/2.8 for NEX coming in March.
Posted: 26 Jan 2012 at 15:54 GMT
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Smooth said: Has anybody seen a picture of this reported new lens? What size is it physically?
Apart from size and the fact it's a faster lens how is it better then say the already released Samyang 8mm f/3.5 www.photozone.de/sony-alpha-aps-c-lens-tests/665-...
It would have to have something pretty serious going for it in size or picture quality (maybe price also) to warrant it's existence. Because the image fov looks to be the same or worse/less.
It must be physical size? Show me the spec sheet!
Regards, Smooth
www.omnipix.com.au
I have not seen the new 8mm.
But I had the current Samyang 8mm that I put on a NEX using an adapter. It was a very unwieldy rig. It was like a small cannon (the boom boom kind). But if Samyang could somehow change the flange/back distance so that an adapter was not needed, the rig wouldn't be so awkward.
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DemonDuck
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