Adaptall Mount Club (Tamron).

**marcusBMG** · 02-12-2016, 01:59 PM

Congratulations Piotr, two of the most classic adaptalls there.

**dadipentak** · 02-12-2016, 02:40 PM

Originally posted by PiotrKrochmal

So I bought two Adaptall 2 lenses one is 90 macro and second is 300 2.8 60B.

Nice picks! Photos, too ;~)

PiotrKrochmal · 02-13-2016, 03:30 AM

thanks

they are made for technical comparison photos

.
So back to Adapters.
those are photos of them
good one on left.

on this one you could see shift.

bad copy closeup

**marcusBMG** · 02-13-2016, 06:05 AM

Hi Piotr it's not clear to me from your pics what is amiss with the "bad" mount. I am investigating these (see my posts) so I am curious. What was the problem with it?

**pacerr** · 02-13-2016, 09:17 AM

Perhaps he's referring to the need to "twist" the lens/adapter slightly on the body to cause the camera to recognize the aperture?

PiotrKrochmal · 02-13-2016, 09:47 AM

Originally posted by marcusBMG

Hi Piotr it's not clear to me from your pics what is amiss with the "bad" mount. I am investigating these (see my posts) so I am curious. What was the problem with it?

in adapter you have two bayonets, pentax and adaptall, so in bad copy it look like pentax to adaptall is in different position. You could see it in lower part of second photo.

**marcusBMG** · 02-13-2016, 10:19 AM

In this pic you can see the 3 bolts S that join the front and back bayonets together. I don't see any problem in your pics. I think it is difficult to make any inferences from the positions of the "tabs".

So the mount wasn't working?

**dadipentak** · 02-15-2016, 09:00 PM - **1 Like**

From my 400/4, recently repaired by dcshooter:

excanonfd · 02-16-2016, 09:42 PM

Originally posted by PiotrKrochmal

in adapter you have two bayonets, pentax and adaptall, so in bad copy it look like pentax to adaptall is in different position. You could see it in lower part of second photo.

There is nothing that looks abnormal. The problem of the PK/A adapters not showing the correct maximum aperture is quite common. The causes can be that it was improperly mounted or dismounted, too much dirt and grit insde the adapter, and age of the adapter, or a combination of all of the above. Rotating the PK/A adapter when it's mounted on your camera will sometimes show the correct aperture value. I've used naptha (lighter fluid) to drowse the adapter liberally, while working the moving parts back and forth, wiping off the residue then keep repeating the process until the naptha runs clear. This method has worked for 3 or 4 adapters but there was one that never could read the max aperture beyond f4.0 - no problem, it resides on my 54B.

Jean Poitiers · 02-18-2016, 01:21 PM

K-3 + 01A + PKA for the Daily Challenge today ...

**marcusBMG** · 02-18-2016, 05:15 PM

Bravo mon ami

Piotrek K · 02-19-2016, 04:28 AM

Few days ago I got Adaptall - 2 104 A lens (70 - 250 3.8 - 4.5) and I'm rather impressed with the results. According to my limited testing the lens seems usable wide open at 250 mm and really good when stopped down to 5.6. It is not that easy to focus at longer distances (no "infinity hard stop" when zoomed to 250 mm, at least in my copy, so live view with magnification seems to be best method).

It also seems it should be usable with Adaptall 2x teleconverter. The weather is bad here, so I cannot judge but my tests look promising. I cannot really compare results with the previous ones without the TC (much slower speeds even with higher ISO and rain which most probably wipes much detail away - +/- 100 m to the usual target) but it seems quite sharp. Moreover the lens has very simmilar design to the 103A model which I once tested just for fun with the TC and it was not that bad combo.

**marcusBMG** · 02-19-2016, 07:36 AM

I think the 104A is a bit of an overlooked lens. I haven't used mine much but my impressons were favourable. I did take some nice flower and close focus shots, I think (like 103A) it's better than the average for that.

Jean Poitiers · 02-19-2016, 10:40 AM

Another 01A image for the Daily Challenge ... @ f/3.5

Jean Poitiers · 02-19-2016, 11:11 AM

Another 01A from today... as an experiment, but I kind of like how it came out ...

02-13-2016, 03:30 AM	#2913
PiotrKrochmal Senior Member Join Date: May 2010 Location: Poland -> Kraków Posts: 199	thanks they are made for technical comparison photos. So back to Adapters. those are photos of them good one on left. on this one you could see shift. bad copy closeup

02-19-2016, 04:28 AM	#2922
Piotrek K Pentaxian Join Date: Dec 2012 Photos: Gallery Posts: 1,383	Few days ago I got Adaptall - 2 104 A lens (70 - 250 3.8 - 4.5) and I'm rather impressed with the results. According to my limited testing the lens seems usable wide open at 250 mm and really good when stopped down to 5.6. It is not that easy to focus at longer distances (no "infinity hard stop" when zoomed to 250 mm, at least in my copy, so live view with magnification seems to be best method). It also seems it should be usable with Adaptall 2x teleconverter. The weather is bad here, so I cannot judge but my tests look promising. I cannot really compare results with the previous ones without the TC (much slower speeds even with higher ISO and rain which most probably wipes much detail away - +/- 100 m to the usual target) but it seems quite sharp. Moreover the lens has very simmilar design to the 103A model which I once tested just for fun with the TC and it was not that bad combo. Last edited by Piotrek K; 02-19-2016 at 04:37 AM. Reason: Typo

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02-12-2016, 01:59 PM	#2911
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,867	Congratulations Piotr, two of the most classic adaptalls there.

02-12-2016, 02:40 PM	#2912
dadipentak Site Supporter Join Date: Jul 2008 Location: Baltimore, Maryland Photos: Gallery Posts: 11,590	Originally posted by PiotrKrochmal So I bought two Adaptall 2 lenses one is 90 macro and second is 300 2.8 60B. Nice picks! Photos, too ;~)

02-13-2016, 06:05 AM	#2914
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,867	Hi Piotr it's not clear to me from your pics what is amiss with the "bad" mount. I am investigating these (see my posts) so I am curious. What was the problem with it?

02-13-2016, 09:17 AM	#2915
pacerr Loyal Site Supporter Join Date: Jan 2008 Location: Paris, TN Photos: Gallery \| Albums Posts: 3,349	Perhaps he's referring to the need to "twist" the lens/adapter slightly on the body to cause the camera to recognize the aperture?

02-13-2016, 09:47 AM	#2916
PiotrKrochmal Senior Member Join Date: May 2010 Location: Poland -> Kraków Posts: 199	Originally posted by marcusBMG Hi Piotr it's not clear to me from your pics what is amiss with the "bad" mount. I am investigating these (see my posts) so I am curious. What was the problem with it? in adapter you have two bayonets, pentax and adaptall, so in bad copy it look like pentax to adaptall is in different position. You could see it in lower part of second photo.

02-13-2016, 10:19 AM	#2917
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,867	In this pic you can see the 3 bolts S that join the front and back bayonets together. I don't see any problem in your pics. I think it is difficult to make any inferences from the positions of the "tabs". So the mount wasn't working?

02-15-2016, 09:00 PM - 1 Like	#2918
dadipentak Site Supporter Join Date: Jul 2008 Location: Baltimore, Maryland Photos: Gallery Posts: 11,590	From my 400/4, recently repaired by dcshooter:

02-16-2016, 09:42 PM	#2919
excanonfd Veteran Member Join Date: Jan 2010 Location: Vancouver, BC Posts: 1,421	Originally posted by PiotrKrochmal in adapter you have two bayonets, pentax and adaptall, so in bad copy it look like pentax to adaptall is in different position. You could see it in lower part of second photo. There is nothing that looks abnormal. The problem of the PK/A adapters not showing the correct maximum aperture is quite common. The causes can be that it was improperly mounted or dismounted, too much dirt and grit insde the adapter, and age of the adapter, or a combination of all of the above. Rotating the PK/A adapter when it's mounted on your camera will sometimes show the correct aperture value. I've used naptha (lighter fluid) to drowse the adapter liberally, while working the moving parts back and forth, wiping off the residue then keep repeating the process until the naptha runs clear. This method has worked for 3 or 4 adapters but there was one that never could read the max aperture beyond f4.0 - no problem, it resides on my 54B.

02-18-2016, 01:21 PM	#2920
Jean Poitiers Pentaxian Join Date: Apr 2011 Location: Lost in translation ... Photos: Gallery \| Albums Posts: 18,076	K-3 + 01A + PKA for the Daily Challenge today ...

02-18-2016, 05:15 PM	#2921
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,867	Bravo mon ami

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02-19-2016, 07:36 AM	#2923
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,867	I think the 104A is a bit of an overlooked lens. I haven't used mine much but my impressons were favourable. I did take some nice flower and close focus shots, I think (like 103A) it's better than the average for that.

02-19-2016, 10:40 AM	#2924
Jean Poitiers Pentaxian Join Date: Apr 2011 Location: Lost in translation ... Photos: Gallery \| Albums Posts: 18,076	Another 01A image for the Daily Challenge ... @ f/3.5

02-19-2016, 11:11 AM	#2925
Jean Poitiers Pentaxian Join Date: Apr 2011 Location: Lost in translation ... Photos: Gallery \| Albums Posts: 18,076	Another 01A from today... as an experiment, but I kind of like how it came out ...