Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-10-2015, 03:15 PM   #1
New Member




Join Date: Mar 2015
Posts: 4
Faulty 645 120 FA Macro Lens?

Hi,

I have just purchased a used 645 120 FA Macro, and it seems the lever at the back that opens the aperture is flopping around, whereas with all of my other lenses it has a spring release. For instance just by rotating the lens the lever moves under the effects of gravity, swaps positions and opens/closes the aperture. Would someone else with this lens be kind enough to confirm whether this is behaviour is normal, or that it is not and the lever is spring loaded?

Thanks,
Andy.

06-10-2015, 06:44 PM   #2
Pentaxian
Pål Jensen's Avatar

Join Date: Dec 2007
Location: Norway
Photos: Albums
Posts: 3,147
It is not normal. The spring is probably loose....
06-11-2015, 02:22 AM   #3
Veteran Member
Kolor-Pikker's Avatar

Join Date: Dec 2014
Posts: 341
On my 120 it springs back as well as on any other lens, and it should, since the mechanism to shift the aperture down to the correct position only applies pressure from one side, the spring has to be firm enough that when the internal lever flicks it doesn't stop the lens down to f/32 from the force. I'm comfortable enough with taking things apart that I could have fixed something like that myself, but you really should have it looked into, it could be as simple as the spring having gotten knocked off it's nest.
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!
645d, 645z, aperture, camera, fa, fa macro, lens, lever, macro, medium format
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax 645 FA 120 Macro mccarvindh Lens Sample Photo Archive 9 07-19-2017 09:49 PM
Tie-breaker: M 85/2 vs M 100/2.8 vs FA 645 120/4 Macro vs FA* 28-70/2.8 Adam Pentax Forums Giveaways 11 10-19-2016 06:02 AM
Pentax 645 120 A vs 120 FA … which would you keep? hsteeves Pentax Medium Format 13 01-12-2015 10:01 AM
645 FA 120 lens query Femtometer Pentax Medium Format 9 04-23-2014 04:47 PM
For Sale - Sold: Pentax 645 FA 120/4 Macro Lens Macroguy Sold Items 1 05-03-2012 08:04 AM



All times are GMT -7. The time now is 09:08 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