Tamron P/ka mount problem

vanchaz2002 · 07-02-2008, 11:55 AM

I bought a Tamron P/KA adaptall mount a few month back. Not until last week, I tried out the mount. The mount can not mount either on the lens or camera. The edge of the mount lost some paint while I tried to push in harder. It seems it's a bit bigger than it should be. I compare the mount to the other p/ka mount I have. It does not have any difference by naked eye. In addition, the two latches adjust for aperture reading is sticky and does not the full range of movement.

The mount does not have any sign of use before I tried and supposed to be new. Anyone has idea of what's going on and how to test/fix it?

Thanks,

CY

Nesster · 07-02-2008, 01:40 PM

You have a functioning other PK/A adaptall? Examine the two closely, move all moving parts etc to pinpoint the differences. From what you describe there may be something jamming the innards of the new mount. Try pushing the aperture pin and comparing that to the good mount.

If the dimensions truly are the same, it has to be one of the moving parts that is jammed and so prevents mounting.

vanchaz2002 · 07-11-2008, 12:44 PM

Finally, I take it apart and it is not perfect ROUND shape. It's a bit oval shape, makes the mount does not fit both lens or camera, also the two aperture ring does not rotate their full range.

Does anyone has one of those or it's the rarest PKA adaptall mount ever?

If anyone has experience, can you tell me if Tamron can fix it as its obvious an manufacturing defect.

**Lowell Goudge** · 07-11-2008, 01:23 PM

Originally posted by vanchaz2002

Finally, I take it apart and it is not perfect ROUND shape. It's a bit oval shape, makes the mount does not fit both lens or camera, also the two aperture ring does not rotate their full range.

Does anyone has one of those or it's the rarest PKA adaptall mount ever?

If anyone has experience, can you tell me if Tamron can fix it as its obvious an manufacturing defect.

I have a PK/A mount for adaptall II which also needed repair, it looks as if someone tried to pry the camera off the lens without uncoupling. Due to the electronic apature coupling it is a little more fragile than a PK mount one (which I also have)

If you can get to the west end of toronto, go to international camera on the queensway in etobicoke, he has several

Moo · 07-11-2008, 01:56 PM

I doubt Tamron would fix or replace it.. The whole adaptall line was discontinued several years ago..
Could we have some photos of the oval mount?

07-02-2008, 11:55 AM	#1
vanchaz2002 Senior Member Join Date: Mar 2008 Location: Toronto Posts: 215	Tamron P/ka mount problem I bought a Tamron P/KA adaptall mount a few month back. Not until last week, I tried out the mount. The mount can not mount either on the lens or camera. The edge of the mount lost some paint while I tried to push in harder. It seems it's a bit bigger than it should be. I compare the mount to the other p/ka mount I have. It does not have any difference by naked eye. In addition, the two latches adjust for aperture reading is sticky and does not the full range of movement. The mount does not have any sign of use before I tried and supposed to be new. Anyone has idea of what's going on and how to test/fix it? Thanks, CY

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07-02-2008, 01:40 PM	#2
Nesster Veteran Member Join Date: Oct 2006 Location: NJ USA Photos: Gallery Posts: 13,072	You have a functioning other PK/A adaptall? Examine the two closely, move all moving parts etc to pinpoint the differences. From what you describe there may be something jamming the innards of the new mount. Try pushing the aperture pin and comparing that to the good mount. If the dimensions truly are the same, it has to be one of the moving parts that is jammed and so prevents mounting.

07-11-2008, 12:44 PM	#3
vanchaz2002 Senior Member Join Date: Mar 2008 Location: Toronto Posts: 215 Original Poster	Finally, I take it apart and it is not perfect ROUND shape. It's a bit oval shape, makes the mount does not fit both lens or camera, also the two aperture ring does not rotate their full range. Does anyone has one of those or it's the rarest PKA adaptall mount ever? If anyone has experience, can you tell me if Tamron can fix it as its obvious an manufacturing defect.

07-11-2008, 01:23 PM	#4
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,888	Originally posted by vanchaz2002 Finally, I take it apart and it is not perfect ROUND shape. It's a bit oval shape, makes the mount does not fit both lens or camera, also the two aperture ring does not rotate their full range. Does anyone has one of those or it's the rarest PKA adaptall mount ever? If anyone has experience, can you tell me if Tamron can fix it as its obvious an manufacturing defect. I have a PK/A mount for adaptall II which also needed repair, it looks as if someone tried to pry the camera off the lens without uncoupling. Due to the electronic apature coupling it is a little more fragile than a PK mount one (which I also have) If you can get to the west end of toronto, go to international camera on the queensway in etobicoke, he has several

07-11-2008, 01:56 PM	#5
Moo Senior Member Join Date: Jun 2008 Posts: 173	I doubt Tamron would fix or replace it.. The whole adaptall line was discontinued several years ago.. Could we have some photos of the oval mount?