Kiron 105mm f2.8 macro with nikon d300

Discussion in 'Macro Photography' started by raybce, Jan 31, 2010.

  1. raybce

    raybce TPF Noob!

    Joined:
    Jan 31, 2010
    Messages:
    2
    Likes Received:
    0
    Location:
    Florida
    Can others edit my Photos:
    Photos OK to edit
    Good day,

    :confused:

    Wonderfull macro shots at 1.1 1.5 f2.8 or f22 (Manual focusing)
    but
    if I put it at INFINITY, can't focus at all.
    Is the lens broken or is it the operator?
    Best regards
    Ray
     
  2. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

    Joined:
    May 1, 2008
    Messages:
    23,092
    Likes Received:
    3,762
    Location:
    UK - England
    Can others edit my Photos:
    Photos OK to edit
    It should be able to focus - from quickly reading around the net it seems the lens has no auto focus so its down the the user to manualy focus for each shot. In addition most lenses will have a little play at the infinity end - that is to take account of temperature changes and construction variation most lenses will not have a single infinity focus point, but rather a rough section of the lens of the lens where infinity focus is possible (and the user then just adjusts the focus by small amounts to get the correct point on the lens).

    In addition it might be harder to focus the lens at longer distances because most macro lenses typically have very little movement of the focus wheel for a lot of change in focus distance at the long end. Of course they make up for this by having a lot of very fine control at the close up end. It could be that you just need to be a little more carefull when focusing the lens at further off subjects. The other factor could be that there is some lack of calibration between your lens and the camera you are using - some of the newer cameras have a micro focus adjustment which can be used to help eliminate this and you can also send camera gear to compaines (eg nikon and canon) to have the setup calibrated - however I am unsure how well they support (or even if they do) the calibration of 3rd party lenses - especially older model lenses.
     
  3. raybce

    raybce TPF Noob!

    Joined:
    Jan 31, 2010
    Messages:
    2
    Likes Received:
    0
    Location:
    Florida
    Can others edit my Photos:
    Photos OK to edit
    Dear Overread,
    I'll try again, but this time, i'll find out at which distance the focus (MANUAL) is out.
    and at what F stop.
    I don't believe that Nikon will take care of that calibration.
    best regards and thank you for your prompt reply.
    Ray
     
  4. dxqcanada

    dxqcanada Been spending a lot of time on here!

    Joined:
    Dec 4, 2008
    Messages:
    5,501
    Likes Received:
    700
    Location:
    Woodbridge, Ontario, Canada
    Can others edit my Photos:
    Photos OK to edit
    I have encountered some used lenses that have issues with focusing at infinity. Usually these are ones where someone has taken the lens apart to clean the internal lens elements and incorrectly placed the front elements.

    Take a close look at the lens to see if there is evidence that it has been taken apart.
     
  5. grafxman

    grafxman TPF Supporters Supporting Member

    Joined:
    Sep 27, 2009
    Messages:
    582
    Likes Received:
    41
    Location:
    FL
    Can others edit my Photos:
    Photos NOT OK to edit
    I dropped a 35mm camera about 40 years ago. After that drop it never again was in focus with any lens. So, is it the lens or the camera? Can you achieve proper focus at infinity with other lens?

    The lens has some good reports about it on the net. If you back off from infinity a little bit, does it come into focus? If so, you might be able to live with it.
     

Share This Page

Search tags for this page
kiron 105
,
kiron 105 f2.8
,
kiron 105 macro
,

kiron 105mm

,

kiron 105mm f2.8

,

kiron 105mm f2.8 macro

,

kiron 105mm macro

,
kiron 105mm macro nikon
,

kiron 105mm macro review

,
kiron macro nikon