Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-16-2016, 03:03 PM   #16
osv
Veteran Member




Join Date: Mar 2007
Location: So Cal
Photos: Gallery
Posts: 2,080
QuoteOriginally posted by Rai93 Quote
According to the eBay page, it's an Asahi Pentax Super Takumar 55mm f/1.8.
so it's a 55/1.8, not a 50/1.8?

shine a flashlight thru it, and also at an angle, in order to bounce the light off of the inner elements.

02-16-2016, 04:18 PM   #17
Loyal Site Supporter
Loyal Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: North Syracuse, NY
Photos: Gallery
Posts: 15,477
No one agrees on whether the 55/1.8 is thoriated or not. I've not experienced yellowing with mine so I would say not. The only two M42 Takumars that are 100% confirmed as radioactive are the 7-element 50/1.4 and the 49mm filter thread 35/2.
02-17-2016, 12:44 AM   #18
Junior Member
Rai93's Avatar

Join Date: Feb 2016
Location: Boaz, Alabama
Photos: Albums
Posts: 40
Original Poster
QuoteOriginally posted by boriscleto Quote
No one agrees on whether the 55/1.8 is thoriated or not. I've not experienced yellowing with mine so I would say not. The only two M42 Takumars that are 100% confirmed as radioactive are the 7-element 50/1.4 and the 49mm filter thread 35/2.
Ahh well I guess I'll just look at it when I get it. Seriously though thanks all of you for the advice and help.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
50mm, advice, da, fungus, heat, k-mount, lens, lenses, light, notice, pentax lens, post, radiation, reviews, slr lens, smc takumar, spores, takumar, true, uv
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax D FA 50mm Macro lens has fungus - how much would it cost to fix? bwDraco Pentax SLR Lens Discussion 8 04-13-2013 02:07 PM
Just Scored a Pentax M 50mm 1.7! Colorado CJ Pentax SLR Lens Discussion 31 09-10-2011 09:28 AM
Macro Scored Some........... eaglem Post Your Photos! 3 04-02-2011 12:24 AM
I Scored Some Free Astia Mike Cash Pentax Film SLR Discussion 5 01-26-2009 07:25 AM
I scored some lenses and a camera and other misc stuff BPT Photographic Technique 15 01-31-2008 02:37 PM



All times are GMT -7. The time now is 11:43 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top