Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-17-2017, 03:17 AM   #1
Junior Member




Join Date: Mar 2008
Location: Brussels
Posts: 27
help with FA 50mm f1.4 lens blocked focus problem?

Hi all
My FA 50mm 1.4 is suddenly acting up — the turning of the focus blocks at about the 3 metre point.
I can turn it past my hand then it moves normally for the rest of the way till infinity is reached.
If I turn the lens around at certain angles (basically upside down) the blocking doesn't happen.
So something seems to be falling in the way and when gravity is pulling in a different direction, it doesn't get in the way.

Problem: I like the lens and would like to fix it, buuuuuut obviously if the cost of repair is too high it makes no sense and maybe I should buy another one if I can find an ok price.
I would prefer to repair and keep my lens, so how and where could I do that for a reasonable price?
I live in Brussels, Belgium and i suppose can ship the lens a reasonable distance, basically till shipping costs make the repair uneconomical.

Any suggestions?
Any help would be sincerely appreciated
Ian


Last edited by Ian in Brussels; 06-17-2017 at 03:22 AM. Reason: typo
06-17-2017, 03:25 AM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 50,158
I don't think this would be a cost-prohibitive repair. Here's a list of all Pentax service shops we know of:

Pentax Repair Facilities (Wordwide listing) - PentaxForums.com

PM2S might be a good starting point, assuming you have no local shops. I'd expect most lens repair places to be able to handle this repair.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

06-17-2017, 03:53 AM   #3
Veteran Member




Join Date: Jun 2013
Location: Newcastle
Photos: Gallery | Albums
Posts: 1,954
There are fine, fingerlike brushes that maintain contact with the barrel as the focus through revolves around it. These could have been crimpled or damaged in some way and now buckled under. This can cause the 'failure' you speak of.

Opening up the lens is a little tricky and once in, the repair is tedious (if reversible). If not reversible then a new part is required.

Adam's advice is spot on if the above is true.
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 f1.4 lens, fa, fa 50mm, fa 50mm f1.4, focus, help, lens, lens blocked focus, pentax service, price, repair, service, warranty
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pixel shift problem with 4th photo and blocked body gelokrol Pentax K-70 16 10-31-2016 03:52 AM
For Sale - Sold: (all sold ) FA 31mm f1.8, FA 77mm f1.8, FA 20mm f2.8, FA 100mm f2.8macro, F50mm f1,7 redpigeons Sold Items 8 01-12-2016 08:43 AM
[Asking]SMC Pentax K 50mm f1/4 VS Pentax-M 50mm f1.4 VS Pentax-M 50mm f1.7 ? liemjerry Pentax SLR Lens Discussion 29 07-08-2015 04:23 PM
For Sale - Sold: FA 77mm f1.8, FA 43mm f1.9 limited, K 50mm f1.2 Nuff Sold Items 2 10-20-2014 07:02 PM



All times are GMT -7. The time now is 01:42 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