Tokina 28mm 2.8 Wont click into Pentax K-x

xedent · 07-19-2010, 02:04 AM

I just bought a Tokina 28mm and for some reason it wont click in i line up the red dots and it wont slide around. Looking at the mounts to my other lenses it doesn't look any different ?

It says on the back.

P/K-A R-P/K

Any ideas ?

Here is a picture.

Pablom · 07-19-2010, 02:50 AM

https://www.pentaxforums.com/forums/pentax-dslr-discussion/15697-dangerous-th...nses-pk-r.html

mrmentera · 07-19-2010, 02:59 AM

Maybe a Ricoh-mount.

Caution regarding Ricoh lenses on Pentax bodies: Pentax SLR Talk Forum: Digital Photography Review

I read somewhere that they also didn´t click, when they didn´t get stucked. Beware!
Look at the pictures further down in this thread and compare tha angles on the contacts on your lens with a pentax-lens.

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/46816-all-righ...ens-stuck.html

xedent · 07-19-2010, 03:33 AM

Yes thanks for the reply guys, just after i posted i saw that the flange around the lens was getting in the way so i removed the two screws and it popped out, the lens goes in and out without a worry now, works great.
Anyone know if this has any effect on the lens ?

Lloydy · 07-19-2010, 01:47 PM

On my Ricoh lenses I've just hacked the shield down to the same size as the ones on my Pentax lenses, but apparently a lot of people just leave them off.

xedent · 07-19-2010, 04:04 PM

Originally posted by Lloydy

On my Ricoh lenses I've just hacked the shield down to the same size as the ones on my Pentax lenses, but apparently a lot of people just leave them off.

Any idea what the shield is there for ?

stevebrot · 07-19-2010, 04:10 PM

Originally posted by xedent

Any idea what the shield is there for ?

To protect the aperture lever.

Steve

07-19-2010, 02:04 AM	#1
xedent Junior Member Join Date: Jun 2010 Location: Queensland, Australia Posts: 27	Tokina 28mm 2.8 Wont click into Pentax K-x I just bought a Tokina 28mm and for some reason it wont click in i line up the red dots and it wont slide around. Looking at the mounts to my other lenses it doesn't look any different ? It says on the back. P/K-A R-P/K Any ideas ? Here is a picture.

07-19-2010, 02:50 AM	#2
Pablom Veteran Member Join Date: Feb 2010 Location: Usa Posts: 1,940	I believe you have this problem https://www.pentaxforums.com/forums/pentax-dslr-discussion/15697-dangerous-th...nses-pk-r.html

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07-19-2010, 02:59 AM	#3
mrmentera Forum Member Join Date: Nov 2009 Location: Falun Posts: 90	Maybe a Ricoh-mount. Caution regarding Ricoh lenses on Pentax bodies: Pentax SLR Talk Forum: Digital Photography Review I read somewhere that they also didn´t click, when they didn´t get stucked. Beware! Look at the pictures further down in this thread and compare tha angles on the contacts on your lens with a pentax-lens. https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/46816-all-righ...ens-stuck.html

07-19-2010, 03:33 AM	#4
xedent Junior Member Join Date: Jun 2010 Location: Queensland, Australia Posts: 27 Original Poster	Yes thanks for the reply guys, just after i posted i saw that the flange around the lens was getting in the way so i removed the two screws and it popped out, the lens goes in and out without a worry now, works great. Anyone know if this has any effect on the lens ?

07-19-2010, 01:47 PM	#5
Lloydy Veteran Member Join Date: Aug 2007 Location: Shropshire, UK Posts: 1,114	On my Ricoh lenses I've just hacked the shield down to the same size as the ones on my Pentax lenses, but apparently a lot of people just leave them off.

07-19-2010, 04:04 PM	#6
xedent Junior Member Join Date: Jun 2010 Location: Queensland, Australia Posts: 27 Original Poster	Originally posted by Lloydy On my Ricoh lenses I've just hacked the shield down to the same size as the ones on my Pentax lenses, but apparently a lot of people just leave them off. Any idea what the shield is there for ?

07-19-2010, 04:10 PM	#7
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by xedent Any idea what the shield is there for ? To protect the aperture lever. Steve