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Looks like an A* 135 1.8 for $800
Posted By: Clinton, 02-24-2016, 07:50 AM

Read it carefully, it says focus is not good, and calls it a "2.8" while all the images are for the 1.8.

Pentax SMC A 135mm F2 8 ' Green Star ' Lens for Pentax K | eBay
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03-07-2016, 09:46 PM   #16
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@dcshooter how goes the resuscitation?

03-08-2016, 08:23 AM   #17
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Refinishing is done, but I'm having a heck of a time getting the front group apart - it looks like whover worked on it before really glued the heck out of it. I'm hesitant to soak he whole thing in solvent, but I might take the plunge and do that next.

My suspicion is that Elements 2 and 3 were recemented at some point (they don't look quite right), and whoever did it didn't have it centered correctly:



The problem is that the retaining ring holding the first element in won't budge, even with solvent applications or heat. The spanner notches were dinged up already, which supports my theory of previous work on it, and the glue for the second retaining group looks pretty messy.

Construction on the whole thing is surprisingly simple. Much more so than some of the other very fast primes (A 50 1.2, etc.).
03-08-2016, 09:48 AM   #18
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QuoteOriginally posted by dcshooter Quote
Refinishing is done, but I'm having a heck of a time getting the front group apart - it looks like whover worked on it before really glued the heck out of it. I'm hesitant to soak he whole thing in solvent, but I might take the plunge and do that next.

My suspicion is that Elements 2 and 3 were recemented at some point (they don't look quite right), and whoever did it didn't have it centered correctly:



The problem is that the retaining ring holding the first element in won't budge, even with solvent applications or heat. The spanner notches were dinged up already, which supports my theory of previous work on it, and the glue for the second retaining group looks pretty messy.

Construction on the whole thing is surprisingly simple. Much more so than some of the other very fast primes (A 50 1.2, etc.).
It sounds that old lenses always need expertise like dcshooter!
03-12-2016, 09:47 AM   #19
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This resurrection has me on the edge of my seat :O Any interesting news?

03-12-2016, 10:26 AM - 1 Like   #20
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QuoteOriginally posted by Clinton Quote
This resurrection has me on the edge of my seat :O Any interesting news?
Same here I can't believe i want that much to know what happened next
03-12-2016, 11:28 AM   #21
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QuoteOriginally posted by aurele Quote
I can't believe i want that much to know what happened next
Like an addictive TV series.
03-12-2016, 01:22 PM   #22
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IIANM Brian is refinishing lenses for members while he contemplates the next step.
03-12-2016, 02:30 PM   #23
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Does this mean we'll have to wait for the next season before we find out the results?

03-12-2016, 02:31 PM   #24
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I don't know how this compares to the A*, but I just found a Porst 135mm f/1,8 K-mount for currently 399 USD on an auction running out in 2 hours. I just thought it might interest some of you.
03-12-2016, 04:06 PM   #25
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DC will resurrect

A piece of glass with this pedigree can only have one outcome - restoration success - the pressure is on
03-12-2016, 04:20 PM   #26
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There is a reality show going here ?
Looking forward to DC's prowess !!

---------- Post added 03-12-16 at 06:27 PM ----------

QuoteOriginally posted by Clinton Quote
This resurrection has me on the edge of my seat :O Any interesting news?
Me too !
But you know .... your signature is more interesting than your post !!
Cheers!
03-12-2016, 04:39 PM   #27
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QuoteOriginally posted by Simen1 Quote
I don't know how this compares to the A*, but I just found a Porst 135mm f/1,8 K-mount for currently 399 USD on an auction running out in 2 hours. I just thought it might interest some of you.
I would not buy it for that price (> original price), despite the fact that the K mount version is rare.
It is known to be quite soft fully open, and corner resolution bad up to F8.
When the Porst 1.8/135 started (as a M42 in the late 1960s), there were very few comparable lenses available.
But with the better glass sorts of the late seventies and eighties its shortcomings became visible.

It is said it was a rebranded Cosina, but I am not sure, as many German users who owned both said the Cosina is better.
03-12-2016, 04:53 PM - 1 Like   #28
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QuoteOriginally posted by jpzk Quote
There is a reality show going here ?
Looking forward to DC's prowess !!

---------- Post added 03-12-16 at 06:27 PM ----------



Me too !
But you know .... your signature is more interesting than your post !!
Cheers!
He lets others use his lenses when you buy one from him! Last time I stopped by his place he had the A* 1200 on a tripod just waiting for me to mount my camera to it.

And yes, the suspense is killing me. A picture or two of the A* 135 taken apart might help subside the pain of waiting.
03-12-2016, 08:37 PM   #29
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QuoteOriginally posted by builttospill Quote
A picture or two of the A* 135 taken apart might help subside the pain of waiting.
+1 for the shiny lens porn!
03-13-2016, 07:23 AM   #30
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OK, OK guys, here's an update. The exterior has been done for a few days. I am still working on getting the front group apart, since I believe a poor recement of elements 2 and 3 is to blame for the poor sharpness of the sample, since everything else seems to align well.

Unfortunately, I still haven't been able to get the first (and by extension the second and third) elememn out, since whoever worked on it before used WAAAAAY too much threadlocker when reassembling. I've had the entire front cell minus element 4 soaking in MEK for a couple of days, and encouragingly, a lot of black glue has come out of the threads, but the front retaining ring still won't budge. I'm very hesitant to apply any more heat, since the size and curvature of the two cemented elements likely make them prone to fracture from thermal stress. Therefore, continued soaking it is. If I get a chance later today, I'll post an exterior pic or two for you guys to drool over.
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