How to install Sigma 30mm 1: 1.4 for sa PKR in Pentax K7

gauthoi · 11-13-2010, 02:51 AM

Please help me.
I have just bought this len Sigma 30mm 1:1.4 DC HSM.

In box said for pentax AF, in cap said for SA/PKR. Serial No. 102 1326 but it is not fit in my K7. I don't know how to install this len in my K7.

Please Help me

Kguru · 11-13-2010, 03:10 AM

It may be a lens for some other mount (brand) but wrongly put in a Pentax AF box.

Can you post a pic of this lens' mount? then we can tell for sure.

gauthoi · 11-13-2010, 03:31 AM

Ok, here is image.

Please help me

Acheron · 11-13-2010, 04:32 AM

looks like EOS mount, I can't see any screwdriver coupling that Pentax has

r0ckstarr · 11-13-2010, 06:33 AM

Originally posted by Acheron

looks like EOS mount, I can't see any screwdriver coupling that Pentax has

Notice the type and location of the contacts. Doesn't look like any Pentax lens I have seen.

gauthoi · 11-13-2010, 08:37 AM

Sure not for pentax but i dont know this len for what body (nikon, canon or sigma) and this len can fit to k7 or not ( use adapter ...)?

Wheatfield · 11-13-2010, 09:30 AM

Without knowing what mount it is, there is no way of knowing if a successful adaptation can be made.
To me it looks like an EOS mount, which is not going to adapt to Pentax.
You may as well send it back to the vendor and wait for something you can use.

ixian · 11-18-2010, 07:57 AM

Looks like a Sigma mount to me. It's called SA bayonet - that's what the lens cap says.
Also have a look here, around 1/3 down, there is photo of two Sigma mount lenses: Sigma SD14: Quick Look at a Quirky Wonder - AnandTech :: Your Source for Hardware Analysis and News

SOldBear · 11-18-2010, 03:47 PM

Originally posted by gauthoi

Sure not for pentax but i dont know this len for what body (nikon, canon or sigma) and this len can fit to k7 or not ( use adapter ...)?

Whatever mount it is, don't bother trying to attach it to a Pentax DSLR, even with an adapter.

If you could mount it at all (with or without adapter), you'd lose autofocus, auto-exposure. I don't think you can even control the lens's aperture for manual shooting.

11-13-2010, 02:51 AM	#1
gauthoi New Member Join Date: Nov 2010 Location: Vietnam Posts: 3	[langtitle=vi]How to install Sigma 30mm 1: 1.4 for sa PKR in Pentax K7[/langtitle] Please help me. I have just bought this len Sigma 30mm 1:1.4 DC HSM. In box said for pentax AF, in cap said for SA/PKR. Serial No. 102 1326 but it is not fit in my K7. I don't know how to install this len in my K7. Please Help me

11-13-2010, 03:31 AM	#3
gauthoi New Member Join Date: Nov 2010 Location: Vietnam Posts: 3 Original Poster	Ok, here is image. Please help me Attached Images

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11-13-2010, 03:10 AM	#2
Kguru Veteran Member Join Date: Jun 2007 Location: Perth - WestAust Posts: 602	It may be a lens for some other mount (brand) but wrongly put in a Pentax AF box. Can you post a pic of this lens' mount? then we can tell for sure.

11-13-2010, 04:32 AM	#4
Acheron Senior Member Join Date: Jul 2009 Location: Croatia Photos: Gallery Posts: 100	looks like EOS mount, I can't see any screwdriver coupling that Pentax has

11-13-2010, 06:33 AM	#5
r0ckstarr Veteran Member Join Date: Sep 2009 Location: Texas Photos: Gallery Posts: 3,507	Originally posted by Acheron looks like EOS mount, I can't see any screwdriver coupling that Pentax has Notice the type and location of the contacts. Doesn't look like any Pentax lens I have seen.

11-13-2010, 08:37 AM	#6
gauthoi New Member Join Date: Nov 2010 Location: Vietnam Posts: 3 Original Poster	Sure not for pentax but i dont know this len for what body (nikon, canon or sigma) and this len can fit to k7 or not ( use adapter ...)?

11-13-2010, 09:30 AM	#7
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,981	Without knowing what mount it is, there is no way of knowing if a successful adaptation can be made. To me it looks like an EOS mount, which is not going to adapt to Pentax. You may as well send it back to the vendor and wait for something you can use.

11-18-2010, 07:57 AM	#8
ixian Senior Member Join Date: Jul 2008 Location: Warwickshire, UK Photos: Albums Posts: 193	Looks like a Sigma mount to me. It's called SA bayonet - that's what the lens cap says. Also have a look here, around 1/3 down, there is photo of two Sigma mount lenses: Sigma SD14: Quick Look at a Quirky Wonder - AnandTech :: Your Source for Hardware Analysis and News

11-18-2010, 03:47 PM	#9
SOldBear Veteran Member Join Date: Feb 2009 Location: Alameda, CA Posts: 3,206	Originally posted by gauthoi Sure not for pentax but i dont know this len for what body (nikon, canon or sigma) and this len can fit to k7 or not ( use adapter ...)? Whatever mount it is, don't bother trying to attach it to a Pentax DSLR, even with an adapter. If you could mount it at all (with or without adapter), you'd lose autofocus, auto-exposure. I don't think you can even control the lens's aperture for manual shooting.