First Light box attempt help

Discussion in 'Photography Beginners' Forum' started by alarionov, Mar 3, 2009.

  1. alarionov

    alarionov TPF Noob!

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    Ok so thought I would try with a DIY lightbox but had the most difficult time getting it bright enough. Still had to brighten it in PP but cant seem to get it white, its a bit yellowish.

    1 1/60" F14 Iso400 WB set to tungsten on both
    [​IMG]

    2 1/15" F22 Iso 400
    [​IMG]
     
  2. rufus5150

    rufus5150 TPF Noob!

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  3. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    It's most likely a metering issue. What the camera sees is a whole lot of white...so it gives you settings to make it mid toned (18% grey). The camera always does this because it is programmed to think every scene is 18% grey. But when you scene is mostly white the meter is tricked so you can't trust it. You need to add exposure to brighten it up. It's as simple as adjusting you EC (exposure compensation). I'd suggest adding one whole stop to start with...and go from there.
     
  4. Samanax

    Samanax TPF Noob!

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    What is the setup? What kind of lights are you using?

    What kind of material did you use for the translucent part of the light box?

    Are you shooting using one of the Creative Modes or are you shooting in full manual?
     
  5. alarionov

    alarionov TPF Noob!

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    this is the one I did
    How to Make An Inexpensive Light Tent - DIY

    but I set up two clamp on lights from the sides.

    I used shutter priority in this instance
     
  6. Samanax

    Samanax TPF Noob!

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    For these kinds of shots I go full manual on my XTi and do lots of test shots and checking of the histogram. I don't use constant lights, I use remote Speedlites on light stands. I plan to get a Sekonic L-358 Flash Master light meter in the near future to help simplify things a bit.
     
  7. alarionov

    alarionov TPF Noob!

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    thanks for the help, I will try adjusting the exposure compensation.
     
  8. alarionov

    alarionov TPF Noob!

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  9. Don Kondra

    Don Kondra Been spending a lot of time on here!

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    Try Aperture mode @ f8... are you using 5500k lights?

    Get them here

    Cheers, Don
     
  10. alarionov

    alarionov TPF Noob!

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    thanks for the advice I will give it a try. Currently I am using cfl thats only 4100 kelvin I will definitely try a higher kelvin bulb though.
     
  11. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    The bulbs shouldn't be an issue, as long as your lighting is consistent....because you can adjust your WB to suit.

    If you aren't already, shoot in RAW mode. This will allow you to adjust the White Balance on the computer, after the shot has been taken.
     
  12. Parkerman

    Parkerman TPF Noob!

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    What I always did using my light box was I preset the WB myself.

    When i set the preset WB.. I just made sure the box was empty and I was just taking pictures of the white.

    Most of the time my shutter speeds were pretty slow. So.. you need to be using a tripod for sure.


    *edit*
    and even on some of mine.. the white could have been brighter as it was a tad bit gray.. here are some that I took back towards the beginning of last summer

    http://i15.photobucket.com/albums/a392/Parkerman/Photography/DSC_1989.jpg
    http://i15.photobucket.com/albums/a392/Parkerman/Photography/DSC_2024.jpg
    http://i15.photobucket.com/albums/a392/Parkerman/Photography/DSC_1964.jpg
     

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