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Okami · 05-01-2008, 03:03 PM

Just got my tamron sp macro adaptall 2 lens and its not registering the aperture on the k20. It's a PK adapter. I tried it on the k100d and k10d all in full manual modes but no go ...

Did i get a bad lens?? or is that impossible and its a bad adapter?

borno · 05-01-2008, 03:10 PM

Hey Okami, The pk adapter will read f--- instead of aperture the pka adapter will allow auto mode. The aperture ring is used with pk adapter and set the green button for tv shift to find shutter speed. you may find some adjustment to the exposure is needed at smaller than f4. Remember to set allow aperture ring in menu. Hope this helps- if not you can just send it to me for a lengthy test

it is the k10 that may need exposure tweaking k100 should be fine

Okami · 05-01-2008, 03:17 PM

Brilliant!! however... when i press the green button should i make a type of ZIPpppp sound?

borno · 05-01-2008, 03:36 PM

The green button closes down the iris of the lens to take an exposure reading so it will make a noise. Glad you got it, the first time I put a manual lens on my k100ds I thought my camera was broken because I forgot to set the aperture ring in the menu

Okami · 05-01-2008, 04:14 PM

One last question.. Is the lens can on this thing supposed to fit without a filter on it?

stevebrot · 05-01-2008, 06:32 PM

Originally posted by Okami

One last question.. Is the lens can on this thing supposed to fit without a filter on it?

What model lens is it? Many of the Tamron lenses require the snap-in type caps (the kind that snap into the filter threads as opposed to the type that slip on the front of the lens).

Steve

Okami · 05-01-2008, 06:52 PM

Tamron SP 90mm Adaptall 2. YEah it looks like its a snap on..

I spent about 15 minutes trying to get a polarizer the seller had put on the lens too.. interesting design...

05-01-2008, 03:03 PM	#1
Okami Veteran Member Join Date: Aug 2007 Location: Georgia Posts: 376	Tamron Adaptall... Bad lens or bad adapter Just got my tamron sp macro adaptall 2 lens and its not registering the aperture on the k20. It's a PK adapter. I tried it on the k100d and k10d all in full manual modes but no go ... Did i get a bad lens?? or is that impossible and its a bad adapter?

05-01-2008, 03:10 PM	#2
borno Veteran Member Join Date: Nov 2006 Location: md-usa Photos: Gallery \| Albums Posts: 2,580	Hey Okami, The pk adapter will read f--- instead of aperture the pka adapter will allow auto mode. The aperture ring is used with pk adapter and set the green button for tv shift to find shutter speed. you may find some adjustment to the exposure is needed at smaller than f4. Remember to set allow aperture ring in menu. Hope this helps- if not you can just send it to me for a lengthy test it is the k10 that may need exposure tweaking k100 should be fine Last edited by borno; 05-01-2008 at 03:13 PM. Reason: more info

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05-01-2008, 03:17 PM	#3
Okami Veteran Member Join Date: Aug 2007 Location: Georgia Posts: 376 Original Poster	Brilliant!! however... when i press the green button should i make a type of ZIPpppp sound?

05-01-2008, 03:36 PM	#4
borno Veteran Member Join Date: Nov 2006 Location: md-usa Photos: Gallery \| Albums Posts: 2,580	The green button closes down the iris of the lens to take an exposure reading so it will make a noise. Glad you got it, the first time I put a manual lens on my k100ds I thought my camera was broken because I forgot to set the aperture ring in the menu

05-01-2008, 04:14 PM	#5
Okami Veteran Member Join Date: Aug 2007 Location: Georgia Posts: 376 Original Poster	One last question.. Is the lens can on this thing supposed to fit without a filter on it?

05-01-2008, 06:32 PM	#6
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Okami One last question.. Is the lens can on this thing supposed to fit without a filter on it? What model lens is it? Many of the Tamron lenses require the snap-in type caps (the kind that snap into the filter threads as opposed to the type that slip on the front of the lens). Steve

05-01-2008, 06:52 PM	#7
Okami Veteran Member Join Date: Aug 2007 Location: Georgia Posts: 376 Original Poster	Tamron SP 90mm Adaptall 2. YEah it looks like its a snap on.. I spent about 15 minutes trying to get a polarizer the seller had put on the lens too.. interesting design...

Tamron Adaptall... Bad lens or bad adapter

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