Macro lens, nikkor micro 105mm f4 vs. f2.8

Discussion in 'Beyond the Basics' started by djacobox372, Aug 24, 2008.

  1. djacobox372

    djacobox372 No longer a newbie, moving up!

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    Wanting to do more macro photography, I had been looking for a deal on a nikkor 105mm f2.8, when I came across a 105mm f4 that was too cheap to pass up.

    I assumed it would just hold me over until I could afford the f2.8, but now I don't see any reason to upgrade... when shooting 1:1 or 2:1, the dof below f4 would be ridiculously tight--I'm curious just how often those that have a micro f2.8 actually shoot below f4.
     
  2. Phranquey

    Phranquey TPF Noob!

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    First, the f/4 is reviewed as a good macro lens, but the 2.8 lens is a little crisper in photo quality, but not by too much. If you're happy with it, definitely no need to upgrade.

    For macro, I shoot at the opposite end, between f/40 to f/57. Shooting macro at f/4 would be such a rediculously shallow depth of field that you would have to be bang on with your focus, and you would likely not be happy with the results. I.e. - @ f/4, if you focused on a bug's eye, the eye would probably be the only thing in focus. You need to stop a true macro lens way down (which means needing additional light or longer shutter speed) to get a desireable DOF.

    EDIT:

    Here is a macro thread:

    http://www.thephotoforum.com/forum/showthread.php?t=133192

    About 1/3 down the thread, you will see a macro done by Overread @ f/2.8, and you will see what I mean about the shalow DOF. Farther down I have a dragonfly shot @ f/45...you will see the difference.
     
    Last edited: Aug 24, 2008
  3. dmatsui

    dmatsui TPF Noob!

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    Phranquey what lighting do you use to acheive f40 and still manage to get a suitable shutter speed to take bugs. The only lighting i've heard about for macro is ring lights and i've heard is gives an undiserable lighting.
     
  4. Phranquey

    Phranquey TPF Noob!

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    Go to that macro thread I listed above, and go towards the very bottom of the thread. I have pics posted of the rig that I use.
     
  5. djacobox372

    djacobox372 No longer a newbie, moving up!

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    Thanks... I guess since I'm happy with how sharp my 105 f4 is... no reason to upgrade.
     
  6. compur

    compur No longer a newbie, moving up!

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    The f/4 is a fantastic lens. You were smart to buy it. :thumbup:
     
  7. clarbin

    clarbin TPF Noob!

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    I have the f/2.8.

    Great lens! :thumbup:
     
  8. Bifurcator

    Bifurcator TPF Noob!

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    Very kewl stuff! :thumbup:

    I also try to always shoot macro at the largest f-number possible.
    http://thephotoforum.com/forum/showthread.php?t=126794
    http://www.thephotoforum.com/forum/showthread.php?p=1292354
     
    Last edited: Aug 24, 2008
  9. Garbz

    Garbz No longer a newbie, moving up!

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    Use it at f/2.8 while doing a macro? Never. That said just because it has macro written on it doesn't mean it can't be used as a portrait lens. f/2.8 really helps there ;)
     

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