Nikon D90 AutoFocus Focusing Problem

Discussion in 'Beyond the Basics' started by Scruggelgreen, Aug 10, 2010.

  1. Scruggelgreen

    Scruggelgreen TPF Noob!

    Joined:
    May 2, 2010
    Messages:
    28
    Likes Received:
    0
    Location:
    Burnsville Minnesota
    Can others edit my Photos:
    Photos OK to edit
    Good Evening Everyone!
    I took some pictures tonight using this focus chart i found on the internet

    Jeffrey Friedl's Blog Jeffrey’s Autofocus Test Chart

    After taking various pictures at different apertures with my three lenses i have concluded that my D90 has back focusing issues.
    My 18 - 55 mm AF-S VR Lens
    DSC_3957 | Flickr - Photo Sharing!

    My 35 mm 1.8 AF-S Lens
    DSC_3942 | Flickr - Photo Sharing!

    My 55 - 200 mm AF-S VR Lens
    DSC_3927 | Flickr - Photo Sharing!

    At this point does anybody know how to adjust the auto-focus on the D90 to help bring these pictures more into focus? Thanks Everyone!
     
  2. kundalini

    kundalini Been spending a lot of time on here!

    Joined:
    Jul 18, 2007
    Messages:
    13,601
    Likes Received:
    1,929
    Location:
    State of Confusion
    Can others edit my Photos:
    Photos NOT OK to edit
    Most folks prefer to actually have the image embedded in the thread rather than having to click on an external link to view photos. I'm one of those folks.
     
  3. Josh66

    Josh66 Been spending a lot of time on here!

    Joined:
    Oct 31, 2007
    Messages:
    14,604
    Likes Received:
    1,236
    Location:
    Cedar Hill, Texas
    Can others edit my Photos:
    Photos NOT OK to edit
    Interestingly, Flickr's ToS states that you can only post links... I was just recently made aware of that - not sure if it's always been that way, or if that's something new...

    But yeah, pictures are better. BTW - it is possible to post pictures that are also links back to the page.
    To do that, do this:
    {URL=link to page here}{IMG}address of picture here{/IMG}{/URL}
    Replace "{" & "}" with "[" & "]".
    That will result in a picture that you can click on to go to it's page.

    Or post the picture and just put the link to the page under it...



    I looked at them ... it doesn't really look like you had the test charts at much of an angle... It's pretty hard to tell where the sharp focus stops the way you shot those.
     
    Last edited: Aug 10, 2010
  4. kundalini

    kundalini Been spending a lot of time on here!

    Joined:
    Jul 18, 2007
    Messages:
    13,601
    Likes Received:
    1,929
    Location:
    State of Confusion
    Can others edit my Photos:
    Photos NOT OK to edit
    phuque flickr


    and your little doggie too.




    :lol:
     
  5. sleist

    sleist Been spending a lot of time on here!

    Joined:
    Nov 8, 2009
    Messages:
    3,542
    Likes Received:
    1,806
    Location:
    Boston
    Can others edit my Photos:
    Photos NOT OK to edit
    As stated above, your setup for this test is not good enough to make any kind of judgment. In addition, your lighting is too low on one shot to be certain you've not put the AF system at a disadvantage. These tests also often require a tripod, VR turned off, shutter delay, and remote shutter release - you did not state if any of this was the case for your photos.

    Are you having focus problems or were you just looking to do tests for the sake of doing tests?
     
  6. Scruggelgreen

    Scruggelgreen TPF Noob!

    Joined:
    May 2, 2010
    Messages:
    28
    Likes Received:
    0
    Location:
    Burnsville Minnesota
    Can others edit my Photos:
    Photos OK to edit
    The camera was on a tripod with an IR remote shutter release. The three pictures you see are all at the largest aperture for that lens and were taken roughly 4 feet away. I did not do the mirror lockup, maybe thats something i should try later. The test chart was at about a 45 degree angle when taking the test shots. I will see if i can post the pictures like you mention above, but it seems that i was unable to do that with flickr.
     

Share This Page

Search tags for this page
back focus problem d90
,
d90 back focus adjustment
,
d90 back focus fix
,
d90 back focusing problem
,
nikon d90 autofocus calibration
,
nikon d90 autofocus problems
,
nikon d90 back focus
,

nikon d90 focus problems

,
nikon d90 problems with autofocus
,
troubleshoting nikon d90