Sigma 50-500mm1:4-6.3 APO DG won't mount to my K3-II

murviper · 05-18-2016, 05:19 AM

I have a K-3 and a K3-II but the above mention lens won't mount to K3-II but will to the K3, what gives?

pete-tarmigan · 05-18-2016, 08:16 AM

Originally posted by murviper

I have a K-3 and a K3-II but the above mention lens won't mount to K3-II but will to the K3, what gives?

My guess is that the lens' mount is for a Canon, Nikon or Sony.

DeadJohn · 05-18-2016, 10:31 AM - **1 Like**

Originally posted by pete-tarmigan

My guess is that the lens' mount is for a Canon, Nikon or Sony.

??? The OP said the lens mounts to a K-3. Those mounts would fail equally on a K-3 or K-3-II.

My guess is the OP's K-3-II has some minor mount defect that only affects some lenses.

**sergysergy** · 05-18-2016, 01:26 PM

that is very weird...

totsmuyco · 05-19-2016, 06:46 AM

My oh my. Thanks for sharing. I wanted to buy this lens and use it on my k-3II.

murviper · 05-19-2016, 02:25 PM

Update - sigma 50 mm 1.8 lens will not attach to the K3-II as well.

Called Pentax support both K3 & K3-II have the same mounts so it should work.
.

murviper · 05-19-2016, 03:53 PM

Could there be something wrong with the mount on the K3-II

**BigMackCam** · 05-19-2016, 04:03 PM

Originally posted by murviper

Could there be something wrong with the mount on the K3-II

Sorry to hear this

I'm afraid it sounds that way - particularly since you are getting the problem with more than one lens; that pretty much rules out a manufacturing defect on the 50-500.

I have both the K-3 and K-3II, and all of my recent Pentax, Sigma, Tamron and older K-mount lenses fit on both, with exactly the same "feel" when mounting them.

When you say those lenses won't mount on the K-3II, can you describe in a bit more detail? Will they slot into the mount, but just not lock into place, or is it something else?

Craig66 · 05-19-2016, 07:29 PM

Sounds like you have a problem with your K3ll lens mount. I have no problems with my K3ll and my Sigma 50-500mm1:4-6.3 APO DG lens. It works great.

I'd be sending your K3ll in for check up of the lens mount, ASAP.

rawr · 05-20-2016, 12:28 AM

Originally posted by murviper

Update - sigma 50 mm 1.8 lens will not attach to the K3-II as well.

Such a lens - Sigma 50mm f1.8 - doesn't exist. You must mean the Sigma 50mm f/1.4 EX DG

Originally posted by BigMackCam

can you describe in a bit more detail? Will they slot into the mount, but just not lock into place, or is it something else?

Extra detail will certainly be useful.

Specifically, is the lens being physically blocked from mounting properly on the K-3 II, by something like (for example) the pentaprism overhang touching the rear of the lens?

Physically, the lens mount side of the K-3II appears identical to the K-3, so lenses that fit OK on K-3 should mount OK on K-3II.

Or does the problem lens mount properly and lock into place, but then not work? If that's the case, it's either another physical problem with lens or body, or something else.

murviper · 05-21-2016, 06:57 AM

I am taking my K3-II & my K3 with all my lenses back to Henry's here in Canada for them to take a look.

Will post what happens later today or tomorrow.

murviper · 05-21-2016, 04:10 PM

Update - took the K3 II to Henry's here in Canada - Salesperson check my camera with a K3 II store and my lenses attached to theirs , so they are sending my to be "repaired"

I hope Pentax just exchanges it for a new camera

**BigMackCam** · 05-21-2016, 04:16 PM

Originally posted by murviper

Update - took the K3 II to Henry's here in Canada - Salesperson check my camera with a K3 II store and my lenses attached to theirs , so they are sending my to be "repaired"

I hope Pentax just exchanges it for a new camera

Good news

Let us know how you get on?

kp0c · 05-21-2016, 04:35 PM

Originally posted by murviper

Update - took the K3 II to Henry's here in Canada - Salesperson check my camera with a K3 II store and my lenses attached to theirs , so they are sending my to be "repaired"

I hope Pentax just exchanges it for a new camera

Don't get your hopes too high, properly no reason to change the whole camera if only the lens mount isn't within tolerances. Also, a new camera might come with its own bag of problem. Was your camera otherwise working properly?

**BigMackCam** · 05-21-2016, 04:53 PM

Originally posted by kp0c

Don't get your hopes too high, properly no reason to change the whole camera if only the lens mount isn't within tolerances. Also, a new camera might come with its own bag of problem. Was your camera otherwise working properly?

I think the important thing here is that a fully working camera will be forthcoming... and in the very, very unlikely event that it has any problems at all, it's still under warranty. But, repair or replacement, @murviper will get a properly sorted camera

05-18-2016, 05:19 AM	#1
murviper Forum Member Join Date: Aug 2009 Location: Brampton,ON.,CDA Photos: Albums Posts: 53	Sigma 50-500mm1:4-6.3 APO DG won't mount to my K3-II I have a K-3 and a K3-II but the above mention lens won't mount to K3-II but will to the K3, what gives?

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05-18-2016, 08:16 AM	#2
pete-tarmigan Veteran Member Join Date: Apr 2009 Location: Conception Bay South, New-fun-land Photos: Gallery Posts: 1,272	Originally posted by murviper I have a K-3 and a K3-II but the above mention lens won't mount to K3-II but will to the K3, what gives? My guess is that the lens' mount is for a Canon, Nikon or Sony.

05-18-2016, 10:31 AM - 1 Like	#3
DeadJohn Pentaxian Join Date: Jan 2011 Location: New York Posts: 4,833	Originally posted by pete-tarmigan My guess is that the lens' mount is for a Canon, Nikon or Sony. ??? The OP said the lens mounts to a K-3. Those mounts would fail equally on a K-3 or K-3-II. My guess is the OP's K-3-II has some minor mount defect that only affects some lenses.

05-18-2016, 01:26 PM	#4
sergysergy Site Supporter Join Date: Jan 2011 Photos: Gallery Posts: 5,170	that is very weird...

05-19-2016, 06:46 AM	#5
totsmuyco Pentaxian Join Date: Aug 2013 Location: Iloilo City Photos: Gallery Posts: 2,276	My oh my. Thanks for sharing. I wanted to buy this lens and use it on my k-3II.

05-19-2016, 02:25 PM	#6
murviper Forum Member Join Date: Aug 2009 Location: Brampton,ON.,CDA Photos: Albums Posts: 53 Original Poster	Update - sigma 50 mm 1.8 lens will not attach to the K3-II as well. Called Pentax support both K3 & K3-II have the same mounts so it should work. .

05-19-2016, 03:53 PM	#7
murviper Forum Member Join Date: Aug 2009 Location: Brampton,ON.,CDA Photos: Albums Posts: 53 Original Poster	Could there be something wrong with the mount on the K3-II

05-19-2016, 04:03 PM	#8
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,670	Originally posted by murviper Could there be something wrong with the mount on the K3-II Sorry to hear this I'm afraid it sounds that way - particularly since you are getting the problem with more than one lens; that pretty much rules out a manufacturing defect on the 50-500. I have both the K-3 and K-3II, and all of my recent Pentax, Sigma, Tamron and older K-mount lenses fit on both, with exactly the same "feel" when mounting them. When you say those lenses won't mount on the K-3II, can you describe in a bit more detail? Will they slot into the mount, but just not lock into place, or is it something else?

05-19-2016, 07:29 PM	#9
Craig66 Senior Member Join Date: Sep 2010 Location: Sapphire Coast. NSW. Posts: 141	Sounds like you have a problem with your K3ll lens mount. I have no problems with my K3ll and my Sigma 50-500mm1:4-6.3 APO DG lens. It works great. I'd be sending your K3ll in for check up of the lens mount, ASAP.

05-20-2016, 12:28 AM	#10
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by murviper Update - sigma 50 mm 1.8 lens will not attach to the K3-II as well. Such a lens - Sigma 50mm f1.8 - doesn't exist. You must mean the Sigma 50mm f/1.4 EX DG Originally posted by BigMackCam can you describe in a bit more detail? Will they slot into the mount, but just not lock into place, or is it something else? Extra detail will certainly be useful. Specifically, is the lens being physically blocked from mounting properly on the K-3 II, by something like (for example) the pentaprism overhang touching the rear of the lens? Physically, the lens mount side of the K-3II appears identical to the K-3, so lenses that fit OK on K-3 should mount OK on K-3II. Or does the problem lens mount properly and lock into place, but then not work? If that's the case, it's either another physical problem with lens or body, or something else.

05-21-2016, 06:57 AM	#11
murviper Forum Member Join Date: Aug 2009 Location: Brampton,ON.,CDA Photos: Albums Posts: 53 Original Poster	I am taking my K3-II & my K3 with all my lenses back to Henry's here in Canada for them to take a look. Will post what happens later today or tomorrow.

05-21-2016, 04:10 PM	#12
murviper Forum Member Join Date: Aug 2009 Location: Brampton,ON.,CDA Photos: Albums Posts: 53 Original Poster	Update - took the K3 II to Henry's here in Canada - Salesperson check my camera with a K3 II store and my lenses attached to theirs , so they are sending my to be "repaired" I hope Pentax just exchanges it for a new camera

05-21-2016, 04:16 PM	#13
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,670	Originally posted by murviper Update - took the K3 II to Henry's here in Canada - Salesperson check my camera with a K3 II store and my lenses attached to theirs , so they are sending my to be "repaired" I hope Pentax just exchanges it for a new camera Good news Let us know how you get on?

05-21-2016, 04:35 PM	#14
kp0c Veteran Member Join Date: Jan 2010 Location: Montreal Photos: Gallery Posts: 761	Originally posted by murviper Update - took the K3 II to Henry's here in Canada - Salesperson check my camera with a K3 II store and my lenses attached to theirs , so they are sending my to be "repaired" I hope Pentax just exchanges it for a new camera Don't get your hopes too high, properly no reason to change the whole camera if only the lens mount isn't within tolerances. Also, a new camera might come with its own bag of problem. Was your camera otherwise working properly?

05-21-2016, 04:53 PM	#15
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,670	Originally posted by kp0c Don't get your hopes too high, properly no reason to change the whole camera if only the lens mount isn't within tolerances. Also, a new camera might come with its own bag of problem. Was your camera otherwise working properly? I think the important thing here is that a fully working camera will be forthcoming... and in the very, very unlikely event that it has any problems at all, it's still under warranty. But, repair or replacement, @murviper will get a properly sorted camera