Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-16-2013, 05:32 PM   #1
New Member




Join Date: Sep 2013
Posts: 3
What is this on my lens?

I just got this yashica m42 yashikor lens and have not seen this before. Is this fungus of some kind ? It seems to be on the outside but does not wipe off. Any ideas and any way to fix this?
The lens also has oil on the aperture blades and I'm wondering if anyone has a link or information on taking this lens apart to clean them.
I spent just under 20 dollars for this lens and what I thought might have been a good deal, i'm beginning to suspect was actually a 20 dollar paper weight.
Name:  yashica lens spots.jpg
Views: 476
Size:  38.8 KB

09-16-2013, 06:32 PM - 1 Like   #2
Site Supporter




Join Date: Aug 2013
Posts: 58
It almost looks like some kind of hot splatter, like from hot oil or welding?
09-16-2013, 06:39 PM - 1 Like   #3
Pentaxian




Join Date: Oct 2009
Location: Far North Qld
Posts: 3,294
Yes, I agree - the previous owner was probably trying to photograph welding or grinding sparks.
Buy a cheap filter for those jobs..
You won't wipe that off...
09-16-2013, 06:50 PM   #4
New Member




Join Date: Sep 2013
Posts: 3
Original Poster
Thx for the responses. I should clarify, this is the rear of the lens.

09-16-2013, 07:05 PM   #5
Loyal Site Supporter
narual's Avatar

Join Date: Jun 2013
Location: South Bend (Notre Dame), Indiana
Posts: 1,942
So they were trying to do reverse-lens macro photography of welding? That sounds pretty dangerous.
09-16-2013, 07:21 PM   #6
Site Supporter




Join Date: Aug 2013
Posts: 58
Probably it happened out-of-service.

Are there any marks on the body or just on the glass?
09-16-2013, 07:32 PM   #7
Site Supporter
patrick9's Avatar

Join Date: Feb 2011
Location: Murfreesboro Tennessee
Photos: Gallery | Albums
Posts: 3,353
A couple of the spots look like they might still have the metal from the splatter in them
09-16-2013, 09:28 PM   #8
New Member




Join Date: Sep 2013
Posts: 3
Original Poster
@SoftwareArtifex No. there's nothing on the outside that I can see that looks like this, it's just the glass. I used a 50mm with a macro on it to take these pictures, these spots are very small. Here is a wider shot to give a better reference of the size of things I'm dealing with. Clearly the lens has the eos adapter I put on it but the actual outside of the lens body looks clean.
Name:  yashica lens spots2.jpg
Views: 261
Size:  53.0 KB

09-23-2013, 02:16 PM   #9
Loyal Site Supporter
narual's Avatar

Join Date: Jun 2013
Location: South Bend (Notre Dame), Indiana
Posts: 1,942
is it showing up in photos? if you take, say, a toothpick and gently go across the glass, is it catching on the spots? if there's no texture difference, maybe it's separation of the lens elements or some discoloring of the adhesive used in them. But if it's not showing up in photos, then you'll probably get your $20 worth.
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!
lens, pentax help
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
What is on/in this lens? vagabond79 Troubleshooting and Beginner Help 6 08-06-2013 04:40 AM
What is this in my lens? timh Troubleshooting and Beginner Help 9 04-28-2012 08:39 AM
What is on this lens? Kcjacoby Troubleshooting and Beginner Help 9 04-16-2012 09:09 AM
What is this on an internal element of my FA77? Thoughts? jurysi Pentax SLR Lens Discussion 5 07-02-2011 11:03 PM
hmmm...what could this be on my lens?! jshurak Post Your Photos! 4 05-08-2008 07:04 AM



All times are GMT -7. The time now is 09:18 AM. | 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