Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
08-05-2010, 06:48 PM   #1
Senior Member

Join Date: Jan 2010
Location: New York
Photos: Gallery
Posts: 198
Something in my 50MM 1.7 M

Purchased a 50mm M 1.7 that looks like it's in really good condition but I noticed what might be a piece of dirt or maybe a very small insect in the lens. Whatever it is seems to be stuck to the sides of the inner barrel just behind the aperture blades. I only see it when wide open. It's brownish colored strand of whatever.
I took a few shots @ wide open and didn't notice any negative effect .
I'd still like to get that piece of crud out of the lens. I'd expect that this crud will decompose and break apart and eventually cause problems.
Should I attempt to clean out or leave good enough alone?
Anyone have tear down procedures for this lens?

Last edited by seachunk2; 08-05-2010 at 07:19 PM.
08-05-2010, 07:19 PM   #2
Junior Member

Join Date: May 2009
Location: Charlotte, North Carolina
Posts: 27
I would vote for leaving it until/unless it becomes a problem
08-05-2010, 07:28 PM   #3
Veteran Member
wshi's Avatar

Join Date: Dec 2009
Location: Illinois
Posts: 455
Post some pictures of it? It's most likely not going to cause a problem with IQ, only resale value. So I'd say leave it be.
08-05-2010, 08:57 PM   #4
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
Go out and take some pictures.

08-05-2010, 09:03 PM   #5
Veteran Member
KxBlaze's Avatar

Join Date: Feb 2010
Location: California
Photos: Gallery
Posts: 1,594
Definitely leave it be. If you try to clean it you can damage or make the situation worse. If it does not show up in your pics, leave it alone for sure.

  • 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, crud, k-mount, lens, pentax lens, piece, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: K10D + grip + 18-55mm, DA 12-24mm, FA 50mm/1.7, D FA 50mm/2.8 macro (Worldwide dgaies Sold Items 6 07-17-2010 03:46 PM
For Sale - Sold: Pentax *ist DL, FA 50mm f/1.4, DFA 100mm f/2.8 macro, DA 18-55mm, A 50mm f/2.0 chemxaj Sold Items 14 05-31-2010 09:34 AM
For Sale - Sold: F 24-50mm 4, A 24-50mm 4, M 35mm 2, M 50mm 1.4, A 35-105mm 3.5, A 70-210mm 4 raybird Sold Items 7 08-29-2008 01:06 PM
For Sale - Sold: FS: 3 x 50mm f/2, 50mm f/1.7, 40mm pancake, 135mm, 70-210mm, FAJ 28-80mm igowerf Sold Items 12 10-13-2007 08:55 PM

All times are GMT -7. The time now is 02:20 AM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]