Results 1 to 10 of 10

Thread: A little help with what everything means in a lens name

  1. #1

    Default A little help with what everything means in a lens name

    For example, "AF-S DX Zoom-Nikkor 18-135mm f/3.5-5.6G IF-ED"

    I know what the basics like 18-135 mm. I know the f/3.5-5.6 (or at least I think I do). But the big things:

    What does the G stand for being the f-stop

    What does the "IF-ED" mean?

    What does the "AF-S" mean?

    Any info on this stuff, or even if you can direct me to some resource that shows me all this stuff; (anytime I try googling any of these terms I just get sites with reviews or selling lenses with those aspects.)

    Thanks in advances guys.

  2. #2

    Default Re: A little help with what everything means in a lens name


  3. #3
    Moderator Octarine's Avatar
    Join Date
    Jan 2008
    Location
    Pasir Ris
    Posts
    12,394

    Default Re: A little help with what everything means in a lens name

    That's too obvious, right Or are we expecting too much from homo interretiatus? (Source)

  4. #4
    Moderator nightwolf75's Avatar
    Join Date
    Dec 2003
    Location
    really MORE diaper changes
    Posts
    17,839
    Blog Entries
    1

    Default Re: A little help with what everything means in a lens name

    wonder why do we even bother to sticky something when no one reads... sigh...

    http://www.clubsnap.com/forums/showthread.php?t=411772
    If Life worked on auto mode then manual mode for photography would have never existed. ― Deeksha Mittal

  5. #5

    Default Re: A little help with what everything means in a lens name

    Quote Originally Posted by nightwolf75 View Post
    wonder why do we even bother to sticky something when no one reads... sigh...

    http://www.clubsnap.com/forums/showthread.php?t=411772
    I read!! i have referred to it a few times already..

  6. #6

    Default Re: A little help with what everything means in a lens name

    Because the word ignorant exists in the dictionary.

  7. #7

    Default Re: A little help with what everything means in a lens name

    Because common sense is a rare commodity. It would make sense to read the manual, check the nikon website, google or search on the forums...
    Alpha

  8. #8

    Default Re: A little help with what everything means in a lens name

    Quote Originally Posted by bandapear View Post
    For example, "AF-S DX Zoom-Nikkor 18-135mm f/3.5-5.6G IF-ED"

    I know what the basics like 18-135 mm. I know the f/3.5-5.6 (or at least I think I do). But the big things:

    What does the G stand for being the f-stop

    What does the "IF-ED" mean?

    What does the "AF-S" mean?

    Any info on this stuff, or even if you can direct me to some resource that shows me all this stuff; (anytime I try googling any of these terms I just get sites with reviews or selling lenses with those aspects.)

    Thanks in advances guys.
    G - means no aperture ring (unlike 'D' lenses)
    IF - Internal Focusing (length of lens does not change as focusing distance changes)
    ED - Extra Low dispersion glass => basically some specially produced glass to improve image quality
    AF-S - silent wave motor - quicker/more silent focusing using an in-built motor within the lens (compared with AF-D, which focuses the lens by relying on a screw-driven motor in the camera body)
    Last edited by scenar; 11th July 2009 at 10:51 PM.

  9. #9

    Default Re: A little help with what everything means in a lens name

    AF-S - silent wave motor - quicker/more silent focusing using an in-built motor within the lens (compared with AF-D, which focuses the lens by relying on a screw-driven motor in the camera body)
    I think AF-S actually means that the autofocus motor is contained within the lens, not the camera body - that's all. For example the 18-55mm DX kit lens also has the AF-S designation but I think it is driven by a micromotor or something like that and doesn't have full-time manual focusing.
    5D Mk II | TS-E 17L | 17-40L | 24-105L IS | 35L | 85L | 70-200 f/2.8L IS | 100L Macro | 580EX II

  10. #10
    Senior Member
    Join Date
    Jul 2006
    Location
    Clementi
    Posts
    10,596

    Default Re: A little help with what everything means in a lens name

    Quote Originally Posted by frankchn View Post
    I think AF-S actually means that the autofocus motor is contained within the lens, not the camera body - that's all. For example the 18-55mm DX kit lens also has the AF-S designation but I think it is driven by a micromotor or something like that and doesn't have full-time manual focusing.
    SWM has a few variants too, just like how USM has Ring USM, Ring USM II, Micro USM and so on.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •