Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
04-17-2008, 01:07 PM   #1
Veteran Member

Join Date: Oct 2007
Location: California
Photos: Gallery
Posts: 370
SR on a manual lens question

When i attach a manual lens (ie M lens), and i turn it on, do i set the SR on the length of the lens or do i have to take into consideration of the 1.5x crop due to our sensors? for example. for a 200mm lens... do i tell the camera its a 200mm lens or a 300mm due to the 1.5x crop?

i ask this because i have a kiron 70-210 macro and im noticing that the pictures arent as clear on the long end as i'd hope. of course the SR doesnt have a setting for 210mm so i put it at 200mm. I dont know if its the length or maybe my hand shake due to the Tank-like weight.

any suggestions?

04-17-2008, 01:10 PM   #2
Senior Member

Join Date: Oct 2007
Location: Wisconsin
Posts: 273
Set the true focal length. Any shake in the image is probably due to you simply not holding the lens solidly enough. SR doesn't make miracles. And, for MF zoom lenses, it's best to set the SR to the shortest focal length, so it doesn't overcompensate at the short end.

  • 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!
200mm, crop, k-mount, length, lens, pentax lens, slr lens, sr
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Manual lens question pdxbmw Pentax DSLR Discussion 9 10-18-2010 04:52 PM
new k-x came! shots with manual lens + question acrollet Pentax DSLR Discussion 4 12-09-2009 09:24 PM
Yet another manual lens question! sherib Troubleshooting and Beginner Help 4 10-28-2009 07:00 PM
manual lens focus question kjfaust Pentax DSLR Discussion 11 05-16-2008 05:20 PM
Question about using manual focus lens. XMACHINA Photographic Technique 3 02-13-2008 08:23 AM

All times are GMT -7. The time now is 10:25 PM. | 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]