Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-06-2008, 07:11 AM   #1
Veteran Member




Join Date: May 2008
Location: Virginia
Posts: 376
Consistency of Mechanical Shutters?

Inspired by another thread, I was just at the Kiev Camera Web site...interesting.

I was reading the description of the Kiew 88cm medium format camera, and noticed it states that the 1/1000 speed should be used "only if necessary," as this speed (the highest) could be inconsistent because it is a mechanical camera. I have never heard this about mechanical shutters. Thus, should I assume the 1/1000 on my Spotmatic F (a mechanical camera) is probably inconsistent?

Thanks,
Glen

06-06-2008, 07:34 AM   #2
WJW
Veteran Member




Join Date: Apr 2008
Location: Central Texas
Posts: 378
Based on experience with older K88's, the 1/1000 is closer to 1/800 but seems to vary between 1/600 and 1/1000, depending on weather, orientation, magnetic fields, how you hold your mouth.....
This is based on taking some consecutive slide exposures back when I started using mine. The slower speeds are more accurate.

My old 35mm cameras (20+) never seem to vary more than 1/3 stop, which is more than accurate enough for the print film I use.
06-06-2008, 07:41 AM   #3
Veteran Member
Nesster's Avatar

Join Date: Oct 2006
Location: NJ USA
Photos: Gallery
Posts: 13,047
the old Pop Photo (and I recall Modern too) had a tolerance of +- 25% to 1/250, and +- 35% 1/500 and over. They also showed pre and post torture test results, as well as error caused by extreme temperature.

on PopPhoto - Digital camera reviews, digital SLR Tests, photography news and all things digital imaging. search for 'featured used camera' and there's a list of vintage reviews. Many good brand / model cameras had shutters that were off the tolerance at highest speeds.

The only Pentax, the Spottie F, was well within tolerance. The Nikkormat FT2 was something like 70% fast at 1000 after torture. The Nikon FM and Leica R3 were well within tolerance. Canon F1 was just at the tolerance border at 1000, and 50% slow at 2000. (heh heh)

In MF, for example, the Bronica SQA was a bit more than 45% slow at 500.
06-06-2008, 02:10 PM   #4
Site Supporter
ChrisPlatt's Avatar

Join Date: Nov 2007
Location: Queens NYC
Posts: 4,441
Typically the top shutter speed is suspect on most cameras with mechanical shutter.

The SP500 had an unmarked setting past 1/500. Pentax wouldn't label it 1/1000...

Chris

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!
camera
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Did the A-series cameras have identical shutters? Sluggo Pentax Film SLR Discussion 6 04-07-2010 10:28 AM
Why do DSLRs have mechanical shutters? Spock Pentax DSLR Discussion 9 09-18-2009 10:14 AM
Do P&S cameras have shutters? BetterSense Pentax Compact Cameras 7 10-14-2008 04:58 PM
Green Shutters Techiechick Post Your Photos! 23 05-31-2008 09:48 AM
why do we still need shutters simons-photography Pentax DSLR Discussion 48 04-07-2008 01:47 PM



All times are GMT -7. The time now is 11:28 AM. | See also: NikonForums.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