Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-01-2014, 02:16 PM   #1
Site Supporter




Join Date: May 2013
Photos: Albums
Posts: 71
50 1.4mm focus ring problems

I have a 50 1.4 M that has a focus ring that barely moves. How difficult is it to repair? Is there a You Tube video that anyone knows of that shows how to disassemble it?

01-01-2014, 02:38 PM - 1 Like   #2
Pentaxian
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 4,183
Check out this thread:
https://www.pentaxforums.com/forums/114-maintenance-repair-articles/179884-pe...-database.html

Which has the following links
M50 1.4
https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/192993-gre...ns-repair.html

While these are mainly concerned with cleaning the lens groups dis-assembly of the helicoid usually doesn't involve these steps. Once you remove the trim ring (engraved) there should be another set of screws holding the filter ring on. Removing the ring usually gives you access to the helicoid focus barrel and can be unscrewed at this point.

Make sure you have a set of JIS cross drivers. The JIS screws look like Philips but there is enough of a difference that a Philips screwdriver can strip out the heads.

If you need helicoid grease I've been using this product:
http://www.amazon.com/Helimax-XP-Telescope-Instrument-Focusing-Helicoid/dp/B...8612882&sr=8-1

This appears to be of very good quality. You can find it on eBay and will ship internationally.

Last edited by Not a Number; 01-01-2014 at 02:50 PM.
01-01-2014, 02:48 PM   #3
Site Supporter




Join Date: May 2013
Photos: Albums
Posts: 71
Original Poster
I will check this out.
Thank You very much!
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!
1.4mm focus, focus, focus ring issue, pentax help, stuck
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
SMC Pentax F 35-70mm F 3.5- 4.5 Focus Ring Problems (It' s jammed) urssu Pentax SLR Lens Discussion 7 06-30-2013 08:55 AM
Pentax M 50 1.7 jammed focus ring Mr Manual Pentax SLR Lens Discussion 6 04-26-2013 09:53 AM
Stuck focus ring (Pentax-A 50mm F/1.7 Barron Pentax SLR Lens Discussion 4 07-18-2012 04:18 PM
DA21mm lens problems: focus ring play Beau Pentax SLR Lens Discussion 2 06-27-2011 07:34 PM
50-135mm focus ring kbryant Pentax SLR Lens Discussion 2 01-20-2011 03:39 PM



All times are GMT -7. The time now is 04:19 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