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**Pepe Guitarra** · 01-18-2012, 05:29 PM

I am the proud owner of a Porst 55mm f1.2 that I used all the times on my Kx. However, after few shots with the K5, the lens stop working. It only works wide open. I got a hold of an article posted here by a forum member and was able to open it. I found out that one small spring that closes the diaphragm broke. I have purhcased several broken lenses to canabalize them and get a spring, but none of them has one similar or close to it. I was able to put it back together and focus and shoot manually wide open on AV priority. Is there any expert in this forum to whom I can send the lens and get it fixed, maybe they have a way to get a new spring. I appreciate any help.

If you have one, beware, I think the K5 did the damage, I am not sure how. Also, if you have a broken Porst 55 f1.2 that you want to sell for parts, I am open (hopefully it is not the spring the broken piece). I have read a lot about these lenses and this seems to be the reason for them to stay wide open. In any case I am using it wide open, but miss the stop down a bit.
Pepe

Adam · 01-18-2012, 05:50 PM

This isn't an article, so I'm moving it to the lens forum

WiseOx · 01-18-2012, 05:58 PM

Contact Eric, I'm sure he can fix it. I just sent off my Cosina 1.2 to him to have it repaired. focus ring is spinning freely. He primarily works on Pentax gear, but will take a look at other gear.

**Pepe Guitarra** · 01-18-2012, 08:32 PM

How do I contact Eric?

**interested_observer** · 01-18-2012, 09:14 PM

Eric can be contacted at...

Home

PS - he is highly recommended!!!

**Pepe Guitarra** · 01-18-2012, 09:27 PM

Thanks, I did. I am waiting for his answer.:
------------
Update said that the reason for getting the diaphragm stuck is oil, so he is cleaning the oil. I sent the lens and I am waiting for it.

01-18-2012, 05:29 PM	#1
Pepe Guitarra Site Supporter Join Date: Nov 2010 Location: California Photos: Gallery \| Albums Posts: 2,223	Porst 55mm f1.2 - Need Surgery I am the proud owner of a Porst 55mm f1.2 that I used all the times on my Kx. However, after few shots with the K5, the lens stop working. It only works wide open. I got a hold of an article posted here by a forum member and was able to open it. I found out that one small spring that closes the diaphragm broke. I have purhcased several broken lenses to canabalize them and get a spring, but none of them has one similar or close to it. I was able to put it back together and focus and shoot manually wide open on AV priority. Is there any expert in this forum to whom I can send the lens and get it fixed, maybe they have a way to get a new spring. I appreciate any help. If you have one, beware, I think the K5 did the damage, I am not sure how. Also, if you have a broken Porst 55 f1.2 that you want to sell for parts, I am open (hopefully it is not the spring the broken piece). I have read a lot about these lenses and this seems to be the reason for them to stay wide open. In any case I am using it wide open, but miss the stop down a bit. Pepe

01-18-2012, 05:50 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,609	This isn't an article, so I'm moving it to the lens forum Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

01-18-2012, 09:14 PM	#5
interested_observer Loyal Site Supporter Join Date: Jun 2009 Location: Tumbleweed, Arizona Photos: Gallery \| Albums Posts: 5,707	Eric can be contacted at... Home PS - he is highly recommended!!!

01-18-2012, 09:27 PM	#6
Pepe Guitarra Site Supporter Join Date: Nov 2010 Location: California Photos: Gallery \| Albums Posts: 2,223 Original Poster	Thanks, I did. I am waiting for his answer.: ------------ Update said that the reason for getting the diaphragm stuck is oil, so he is cleaning the oil. I sent the lens and I am waiting for it. Last edited by Pepe Guitarra; 02-05-2012 at 09:36 PM.

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01-18-2012, 05:58 PM	#3
WiseOx Veteran Member Join Date: Sep 2006 Location: Whitby (near Toronto), Canada Photos: Albums Posts: 433	Contact Eric, I'm sure he can fix it. I just sent off my Cosina 1.2 to him to have it repaired. focus ring is spinning freely. He primarily works on Pentax gear, but will take a look at other gear.

01-18-2012, 08:32 PM	#4
Pepe Guitarra Site Supporter Join Date: Nov 2010 Location: California Photos: Gallery \| Albums Posts: 2,223 Original Poster	How do I contact Eric?

Porst 55mm f1.2 - Need Surgery

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