Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
06-25-2013, 12:36 AM   #1
Junior Member

Join Date: Apr 2013
Location: Melbourne
Photos: Albums
Posts: 25
ED lens

Being a bit of a newby I would like to know what the ED signifies in a lens description please?

For example
PENTAX SMC DA 55-300mm f/4.0-5.8 ED Lens


06-25-2013, 12:49 AM   #2
Site Supporter
i83N's Avatar

Join Date: Mar 2009
Location: Lithuania
Photos: Gallery
Posts: 1,154
Low dispersion glass - Wikipedia, the free encyclopedia
06-25-2013, 12:56 AM   #3
Junior Member

Join Date: Apr 2013
Location: Melbourne
Photos: Albums
Posts: 25
Original Poster
Thanks i83N
06-25-2013, 01:35 AM   #4
Site Supporter
Stone G.'s Avatar

Join Date: Jun 2010
Location: North Zealand, Denmark
Photos: Gallery | Albums
Posts: 1,516
You can find a brief overview of Pentax lens terminology here:

Pentax Lens Terminology


  • 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, lens, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: SMC Pentax DA 50-200mm ED Lens agrandal Sold Items 10 08-11-2012 05:53 AM
For Sale - Sold: Pentax-A * 645 ED 300mm f4 Lens [Price Reduction!] jlandecker Sold Items 7 07-19-2012 04:59 PM
PENTAX-DA 12-24mm F4 ED AL IF Lens charliezap Pentax SLR Lens Discussion 12 02-01-2012 12:49 PM
For Sale - Sold: Pentax DA 12-24 F4 ED AL lens VladM Sold Items 3 12-05-2011 04:38 PM
Lens Mount FA* 1:4 600mm IF ED tomkeet Pentax SLR Lens Discussion 18 11-03-2011 04:55 AM

All times are GMT -7. The time now is 02:59 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]