Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-05-2019, 06:16 PM   #31
Pentaxian
Silent Street's Avatar

Join Date: Nov 2011
Location: Noosa, Queensland (Dec-Feb)
Photos: Albums
Posts: 1,048
Tuco posted an observation about storage of LS lenses in 2009. Search the forum for this; I am on-loc in the wilds at the mo and running out of spare hands...

09-07-2019, 02:37 AM   #32
New Member




Join Date: Jul 2019
Photos: Gallery
Posts: 12
QuoteOriginally posted by rdenney Quote
Springs relaxed mean the shutter has been released. Cocked on a Pentax LS lens means that you have rotated the cocking ring to charge the shutter.

The focal-plane shutter on a 6x7 is cocked when you advance the film.

Rick “who never really worries about how they are stored” Denney
OK thanks Rick. Now you've got me worried about my focal-plane shutter. Should I store that cocked or released?!
09-07-2019, 03:37 AM   #33
Loyal Site Supporter
Loyal Site Supporter




Join Date: Oct 2018
Location: Quebec City, Quebec
Posts: 1,954
I used the old 55 mm f/3.5 for a few years before upgrading to the 67 Pentax 55 mm f/4 latest edition. The old lens was quite prone to flaring in backlighting conditions. It was very sharp though. I used it for landscape pictures @ f/16 tripod-mounted and produced very beautiful garden pictures with it. The new 55 mm f/4 is in a league of its own, it is the most "optically perfect" lens I ever used, no flare, exceedingly sharp, lovely colors.

Regards, Richard
09-07-2019, 03:02 PM   #34
Pentaxian
Silent Street's Avatar

Join Date: Nov 2011
Location: Noosa, Queensland (Dec-Feb)
Photos: Albums
Posts: 1,048
QuoteOriginally posted by Graville Quote
OK thanks Rick. Now you've got me worried about my focal-plane shutter. Should I store that cocked or released?!

Focal plane shutters and leaf shutters are two different things that perform the same function in specific situations. With all of the Pentax 6x7 / 67-variant cameras, the camera's shutter should not be left cocked for an extended period of time as this will lead to inaccurate shutter speeds. Good practice would suggest you not wind on the last frame of a shoot.

The springs in leaf shutter lenses are very, very tiny. The complexity of repair is the reason prevention is better than cure when learning how to store the lenses correctly when not in use.

09-23-2019, 09:21 PM   #35
Site Supporter
Site Supporter




Join Date: Feb 2018
Location: NoVA
Posts: 600
For the focal-plane shutter in a P67, it hardly matters. The closing of the second curtain is timed electronically, and the springs only control how fast the curtains move.

Rick “who lost touch for a few weeks” Denney
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, advice, bit, camera, features, lens, lenses, medium format, pentax, purchase a pentax, weight
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Pentax 6x7 Auto Bellows and Pentax 6x7 Slide Copier oneill Sold Items 0 02-04-2018 02:00 PM
Pentax Medium Format Resources: 645 & 6x7 Cameras and Lenses, 645 & 6x7 Accessories Adam Pentax Medium Format 9 02-12-2017 03:38 AM
For Sale - Sold: Pentax 6x7 400mm f4 SMC Takumar & 6x7 to K mount adapter littledrawe Sold Items 8 04-30-2012 04:58 PM
To All 6x7, 67, 67II users. I need bag advice. MysteryOnion Pentax Medium Format 8 12-04-2010 06:19 PM
Advice Columnist Advice on Photography - do you agree? betsypdx General Talk 9 06-24-2007 12:45 PM



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