Pentax K 1.2/50mm Disassembly pics

Pentax K 1.2/50mm Disassembly pics · **4 Likes**

I wanted to remove haze from this lens and I documented the various stages It so I could put it back together. notice my work surface no screws escaping here

Remove rubber grip and unscrew flanged ring in front of grip to access front elements(not Descriptive beauty ring on lens face)

Remove screws hidden by this ring

lift of the ring after screws removed and when this is done you can then access the front elements by unscrewing the descriptive beauty ring

Arrvon · 11-09-2014, 01:25 PM

Thanks for taking the time to post this. Always appreciate great reference material like this on the he forum!

**Kerrowdown** · 11-09-2014, 01:45 PM

Just how scary is that...

I'll leave anything that needs doing like that in the future, to the hands of the professionals.

Sliver-Surfer · 11-09-2014, 01:54 PM

Originally posted by Kerrowdown

Just how scary is that...

I'll leave anything that needs doing like that in the future, to the hands of the professionals.

Haha thats why I took pictures. My motto is how do you know you can't fix it if you don't try.
Video or photograph yourself doing it..I videoed as well but too much cursing.

MarkJerling · 11-09-2014, 04:43 PM

Yikes! You're braver than me! Thanks for posting.

**interested_observer** · 11-09-2014, 04:49 PM

I don't know for sure that I would have tried that, but its nice to have the pictorial instructions.

MarkJerling · 11-09-2014, 06:44 PM

Originally posted by interested_observer

I don't know for sure that I would have tried that, but its nice to have the pictorial instructions.

It's not the taking apart that's the hard part with anything, I find - It's the putting back together! I often have spares left over!

narual · 11-10-2014, 06:54 AM

Do we get photos of the rest of the process? Were you able to successfully remove the haze?

Sliver-Surfer · 11-10-2014, 08:07 AM

Originally posted by narual

Do we get photos of the rest of the process? Were you able to successfully remove the haze?

I did remove the haze. It was condensed oil on the elements from evaporated lubricant. I did not take pictures of the element cleaning because it was a simple process and my intent was to create a photo map of how to put it back together..sorry. I used 99% isopropl alcohol, microfibre cloth and compressed air to clean it.

**jbondo** · 11-10-2014, 04:32 PM

If you're fixing up nicer lenses like these, you might want to consider getting some lab-grade alcohol (99.99%). I've had trouble with impurities on 99% grade. Higher grade stuff doesn't cost much and can reduce the time it takes to get the elements really clean. http://www.amazon.com/MG-Chemicals-Isopropyl-Alcohol-Cleaner/dp/B005DNQX3C

Thanks for sharing! much appreciated!

**jbondo** · 11-16-2014, 12:24 PM

Originally posted by dcshooter

Alcohol is a cleaner that is perhaps good for many cleaning applications, but is not really great for any.

Agreed. And thanks for the recommendation on naptha. It's one of the few solvents I've not used.

Thor Gunderson · 11-17-2014, 07:16 AM

I just got my copy of this linse, it has a single tiny hair inside, i newer noticed it on pictures so i will keep this post, if one day i will deassemple it

My lens also have some damage om the front lens thread, but overall in good shape

Chaos_Realm · 01-02-2015, 12:10 AM

Thanks silly surfer, I will try to get this added to the disassembly database thread for you.

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11-09-2014, 01:25 PM	#2
Arrvon Senior Member Join Date: Jun 2009 Location: Vancouver, Canada Photos: Albums Posts: 242	Thanks for taking the time to post this. Always appreciate great reference material like this on the he forum!

11-09-2014, 01:45 PM	#3
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,863	Just how scary is that... I'll leave anything that needs doing like that in the future, to the hands of the professionals.

11-09-2014, 01:54 PM	#4
Sliver-Surfer Pentaxian Join Date: Sep 2011 Posts: 1,558 Original Poster	Originally posted by Kerrowdown Just how scary is that... I'll leave anything that needs doing like that in the future, to the hands of the professionals. Haha thats why I took pictures. My motto is how do you know you can't fix it if you don't try. Video or photograph yourself doing it..I videoed as well but too much cursing.

11-09-2014, 04:43 PM	#5
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,422	Yikes! You're braver than me! Thanks for posting.

11-09-2014, 04:49 PM	#6
interested_observer Loyal Site Supporter Join Date: Jun 2009 Location: Tumbleweed, Arizona Photos: Gallery \| Albums Posts: 5,707	I don't know for sure that I would have tried that, but its nice to have the pictorial instructions.

11-09-2014, 06:44 PM	#7
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,422	Originally posted by interested_observer I don't know for sure that I would have tried that, but its nice to have the pictorial instructions. It's not the taking apart that's the hard part with anything, I find - It's the putting back together! I often have spares left over!

11-10-2014, 06:54 AM	#8
narual Veteran Member Join Date: Jun 2013 Location: South Bend (Notre Dame), Indiana Photos: Gallery \| Albums Posts: 1,988	Do we get photos of the rest of the process? Were you able to successfully remove the haze?

11-10-2014, 08:07 AM	#9
Sliver-Surfer Pentaxian Join Date: Sep 2011 Posts: 1,558 Original Poster	Originally posted by narual Do we get photos of the rest of the process? Were you able to successfully remove the haze? I did remove the haze. It was condensed oil on the elements from evaporated lubricant. I did not take pictures of the element cleaning because it was a simple process and my intent was to create a photo map of how to put it back together..sorry. I used 99% isopropl alcohol, microfibre cloth and compressed air to clean it.

11-10-2014, 04:32 PM	#10
jbondo Loyal Site Supportaxian Join Date: Sep 2013 Location: Texas Photos: Albums Posts: 503	If you're fixing up nicer lenses like these, you might want to consider getting some lab-grade alcohol (99.99%). I've had trouble with impurities on 99% grade. Higher grade stuff doesn't cost much and can reduce the time it takes to get the elements really clean. http://www.amazon.com/MG-Chemicals-Isopropyl-Alcohol-Cleaner/dp/B005DNQX3C Thanks for sharing! much appreciated!

11-16-2014, 12:24 PM	#11
jbondo Loyal Site Supportaxian Join Date: Sep 2013 Location: Texas Photos: Albums Posts: 503	Originally posted by dcshooter Alcohol is a cleaner that is perhaps good for many cleaning applications, but is not really great for any. Agreed. And thanks for the recommendation on naptha. It's one of the few solvents I've not used.

11-17-2014, 07:16 AM	#12
Thor Gunderson Junior Member Join Date: Aug 2013 Location: Aarhus Posts: 44	I just got my copy of this linse, it has a single tiny hair inside, i newer noticed it on pictures so i will keep this post, if one day i will deassemple it My lens also have some damage om the front lens thread, but overall in good shape

01-02-2015, 12:10 AM	#13
Chaos_Realm Veteran Member Join Date: Feb 2011 Location: Melbourne, Australia Photos: Gallery \| Albums Posts: 1,251	Thanks silly surfer, I will try to get this added to the disassembly database thread for you.