Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
04-25-2007, 03:46 PM   #1
Inactive Account

Join Date: Apr 2007
Location: Oregon
Photos: Gallery
Posts: 47
How to determine focal range?

How do I determine the focal range of a given focal distance and F-Stop if my lens doesn't have the range scale on it? (Depth of Field scale)

I would like to be able to set the amount of bokeh without the trial and error.

Last edited by cbrfreak; 04-25-2007 at 04:25 PM.
04-25-2007, 04:31 PM   #2
Inactive Account

Join Date: Apr 2007
Location: Oregon
Photos: Gallery
Posts: 47
Original Poster
Never mind... I found what I was looking for.

  • 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!
k-mount, pentax lens, range, scale, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Is there a WR Version of the 18-250mm lens or something close to the same focal range stl09 Pentax SLR Lens Discussion 11 05-02-2010 06:01 AM
How to determine which focal legth will work for a scene? pcarfan Photographic Technique 31 02-27-2010 07:55 AM
need to fill a hole in my AF focal range - old Pentax FA 100 or new Tamron SP 90??? m8o Pentax SLR Lens Discussion 14 10-11-2008 10:47 PM
How Can I Determine Focal Length? stormdore Pentax DSLR Discussion 5 06-13-2008 07:41 AM
duplicating fa to da focal range mrsnoogle Pentax DSLR Discussion 4 08-05-2007 05:01 AM

All times are GMT -7. The time now is 09:44 AM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]