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Mistral75 · 03-22-2014, 01:00 PM

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Originally posted by Na Horuk

Isn't the Nikon version more expensive because it requires some sort of chip?
That being said, I would love it if the K-mount version would submit focal length data..

Yes, there is a chip so that entry-level Nikon cameras can meter exposure. The Nikon terminology for such a lens is Ai-P. You will find the same chip in Zeiss ZF.2 lenses.

Last edited by Mistral75; 03-22-2014 at 01:06 PM.

Na Horuk · 03-22-2014, 01:09 PM

Good thing the K-mount doesn't need anything like that! the barest K-mount is pretty simple and still allows a lot. But as I said, if only the Samyang lenses could communicate focal length data

Mistral75 · 03-22-2014, 02:08 PM

Originally posted by Na Horuk

Good thing the K-mount doesn't need anything like that! the barest K-mount is pretty simple and still allows a lot. But as I said, if only the Samyang lenses could communicate focal length data

The Nikon F mount doesn't need it either. It's'a mere software-induced limitation of entry and mid-level Nikon DSLRs: no chip, no metering.

The same applies to all Nikon 1 cameras, hence the very low use of adapters with these cameras (you have to shoot in manual mode, look at the histogram, modify your settings, shoot again, look again at the histogram and so on).

Talk about crippling one's camera...

ToyTank · 03-22-2014, 10:39 PM

Originally posted by Na Horuk

Good thing the K-mount doesn't need anything like that! the barest K-mount is pretty simple and still allows a lot. But as I said, if only the Samyang lenses could communicate focal length data

Hm I'll have to check again, but I was thinking the 8mm and 85mm I own DID communicate FL

Ishpuini · 03-24-2014, 03:14 AM

Originally posted by ToyTank

Hm I'll have to check again, but I was thinking the 8mm and 85mm I own DID communicate FL

My 24 TS sure doesn't, and I would doubt any 8mm lens would pass FL info, since Pentax only registers FL starting at 10mm and up.

Wim

Zygonyx · 03-24-2014, 03:39 AM

+1, the Sigma 8-16mm doesn't transmit FL under 10mm

ToyTank · 03-24-2014, 07:45 AM

Originally posted by Ishpuini

My 24 TS sure doesn't, and I would doubt any 8mm lens would pass FL info, since Pentax only registers FL starting at 10mm and up.

Wim

I just checked and you are correct on the 8mm. I have SR off by default, and the my K30 only asks for FL when I turn SR on.

cali92rs · 03-24-2014, 07:54 AM

Originally posted by Zygonyx

+1, the Sigma 8-16mm doesn't transmit FL under 10mm

Yea, and that sucks because lens corrections, which are so valuable with an ultra, ultra wide like 8mm, use the focal length from the exif data.
There is a work around, but it just adds time to the workflow.

Zygonyx · 03-24-2014, 09:11 AM

I haven't checked, but don't think DxO is blocked with exifs "blanks" ?

thibs · 03-25-2014, 06:22 AM

Originally posted by cali92rs

Yea, and that sucks because lens corrections, which are so valuable with an ultra, ultra wide like 8mm, use the focal length from the exif data.
There is a work around, but it just adds time to the workflow.

Yep this is annoying, as are certain (all?) Sigma lens not correctly recognized by Lightroom (Sigma 28/1.8).
Confusing if you also have the F28/2.8..

philbaum · 03-25-2014, 12:11 PM

Originally posted by VisualDarkness

Sell my new Pentax DA 14/2,8 and buy this? I think I stay with the 14mm, I already struggle with the wideness of that lens and the 10mm doesn't take filters. But tempting indeed!

I agree with you. I have a Sigma 10-20 that i don't use anymore. About 17 to 21 is about as wide as i will go. Some people seem to be able to use UWA effectively - but not everyone IMHO.

nightfly · 03-26-2014, 03:04 PM

B&H had the 10mm f/2.8 listed as available March 25, but now just shows pre-order. I'm still waiting for my second copy of the 16mm f/2. Hopefully soon.

I cannot find the 10/2.8 anywhere else as it seems B&H is the sole dealer for this lens in the USA.

LeChuck · 03-26-2014, 04:25 PM

Adorama has it listed under the Rokinon brand. It always seems like the Rokinon versions are more available here in the US. I don't know if it is *really* available though. As for the Samyang at B&H, it is still vaporware for now, since the 25th availability date has come and gone and there's nothing (I have it on pre-order myself).

ToyTank · 04-05-2014, 08:09 PM

FYI "Bestpriceoptics" on Ebay apparently has 4 in stock BIN $530 OBO. I don't see anyone else having any in stock. I've bought from Bestpriceoptics good ebayer

oh I should add a linky

rjpinaz · 04-09-2014, 11:59 AM

Showing as "In Stock" now at B&H.
Rokinon 10mm f/2.8 ED AS NCS CS Lens for Pentax K Mount 10M-P

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03-22-2014, 01:00 PM	#61
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. Originally posted by Na Horuk Isn't the Nikon version more expensive because it requires some sort of chip? That being said, I would love it if the K-mount version would submit focal length data.. Yes, there is a chip so that entry-level Nikon cameras can meter exposure. The Nikon terminology for such a lens is Ai-P. You will find the same chip in Zeiss ZF.2 lenses. Last edited by Mistral75; 03-22-2014 at 01:06 PM.

03-22-2014, 01:09 PM	#62
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	Good thing the K-mount doesn't need anything like that! the barest K-mount is pretty simple and still allows a lot. But as I said, if only the Samyang lenses could communicate focal length data

03-22-2014, 02:08 PM	#63
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by Na Horuk Good thing the K-mount doesn't need anything like that! the barest K-mount is pretty simple and still allows a lot. But as I said, if only the Samyang lenses could communicate focal length data The Nikon F mount doesn't need it either. It's'a mere software-induced limitation of entry and mid-level Nikon DSLRs: no chip, no metering. The same applies to all Nikon 1 cameras, hence the very low use of adapters with these cameras (you have to shoot in manual mode, look at the histogram, modify your settings, shoot again, look again at the histogram and so on). Talk about crippling one's camera...

03-22-2014, 10:39 PM	#64
ToyTank Veteran Member Join Date: Mar 2013 Photos: Albums Posts: 675	Originally posted by Na Horuk Good thing the K-mount doesn't need anything like that! the barest K-mount is pretty simple and still allows a lot. But as I said, if only the Samyang lenses could communicate focal length data Hm I'll have to check again, but I was thinking the 8mm and 85mm I own DID communicate FL

03-24-2014, 03:14 AM	#65
Ishpuini Veteran Member Join Date: Sep 2006 Location: Antwerp, Belgium Photos: Gallery Posts: 1,727	Originally posted by ToyTank Hm I'll have to check again, but I was thinking the 8mm and 85mm I own DID communicate FL My 24 TS sure doesn't, and I would doubt any 8mm lens would pass FL info, since Pentax only registers FL starting at 10mm and up. Wim

03-24-2014, 03:39 AM	#66
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	+1, the Sigma 8-16mm doesn't transmit FL under 10mm

03-24-2014, 07:45 AM	#67
ToyTank Veteran Member Join Date: Mar 2013 Photos: Albums Posts: 675	Originally posted by Ishpuini My 24 TS sure doesn't, and I would doubt any 8mm lens would pass FL info, since Pentax only registers FL starting at 10mm and up. Wim I just checked and you are correct on the 8mm. I have SR off by default, and the my K30 only asks for FL when I turn SR on.

03-24-2014, 07:54 AM	#68
cali92rs Veteran Member Join Date: May 2011 Location: Long Beach, CA Posts: 3,354	Originally posted by Zygonyx +1, the Sigma 8-16mm doesn't transmit FL under 10mm Yea, and that sucks because lens corrections, which are so valuable with an ultra, ultra wide like 8mm, use the focal length from the exif data. There is a work around, but it just adds time to the workflow.

03-24-2014, 09:11 AM	#69
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	I haven't checked, but don't think DxO is blocked with exifs "blanks" ?

03-25-2014, 06:22 AM	#70
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 7,001	Originally posted by cali92rs Yea, and that sucks because lens corrections, which are so valuable with an ultra, ultra wide like 8mm, use the focal length from the exif data. There is a work around, but it just adds time to the workflow. Yep this is annoying, as are certain (all?) Sigma lens not correctly recognized by Lightroom (Sigma 28/1.8). Confusing if you also have the F28/2.8..

03-25-2014, 12:11 PM	#71
philbaum Veteran Member Join Date: Oct 2007 Location: Port Townsend, Washington State, USA Posts: 3,659	Originally posted by VisualDarkness Sell my new Pentax DA 14/2,8 and buy this? I think I stay with the 14mm, I already struggle with the wideness of that lens and the 10mm doesn't take filters. But tempting indeed! I agree with you. I have a Sigma 10-20 that i don't use anymore. About 17 to 21 is about as wide as i will go. Some people seem to be able to use UWA effectively - but not everyone IMHO.

03-26-2014, 03:04 PM	#72
nightfly Senior Member Join Date: Nov 2008 Location: Maine, USA Photos: Gallery Posts: 251	B&H had the 10mm f/2.8 listed as available March 25, but now just shows pre-order. I'm still waiting for my second copy of the 16mm f/2. Hopefully soon. I cannot find the 10/2.8 anywhere else as it seems B&H is the sole dealer for this lens in the USA.

03-26-2014, 04:25 PM	#73
LeChuck Forum Member Join Date: Apr 2011 Location: Tucson, AZ Photos: Albums Posts: 94	Adorama has it listed under the Rokinon brand. It always seems like the Rokinon versions are more available here in the US. I don't know if it is really available though. As for the Samyang at B&H, it is still vaporware for now, since the 25th availability date has come and gone and there's nothing (I have it on pre-order myself).

04-05-2014, 08:09 PM	#74
ToyTank Veteran Member Join Date: Mar 2013 Photos: Albums Posts: 675	FYI "Bestpriceoptics" on Ebay apparently has 4 in stock BIN $530 OBO. I don't see anyone else having any in stock. I've bought from Bestpriceoptics good ebayer oh I should add a linky

04-09-2014, 11:59 AM	#75
rjpinaz Junior Member Join Date: Oct 2010 Location: Lincoln, CA Photos: Gallery \| Albums Posts: 42	Showing as "In Stock" now at B&H. Rokinon 10mm f/2.8 ED AS NCS CS Lens for Pentax K Mount 10M-P

Samyang 10mm soon

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