Same exposure on all photos ?

Discussion in 'Photography Beginners' Forum' started by alecu, Jan 28, 2009.

  1. alecu

    alecu TPF Noob!

    Joined:
    Jan 28, 2009
    Messages:
    7
    Likes Received:
    0
    Location:
    Hamilton, Ontario, Canada
    Can others edit my Photos:
    Photos OK to edit
    Hello all,


    I have a problem with my exposure.

    My equipment is Nikon D40x with 18-55mm lens.
    Camera is on a very rigid tripod and the distance to the subject is fixed. This way I know exactly what scale to use when I import the photo into my PC. Camera is controlled by [ Camera Control Pro Software ]

    The pictures are taken inside a warehouse using the available artificial lighting.

    The subject is a metallic frame on which I set different sizes cardboards. The actual cardboards have always the same color but because of different sizes I get different colors for them.

    How can I keep the same exposure (at least this is what I think I need) for all the cardboards. Basically I need that all cardboards the have the same original color regardless of the size.

    Thank you,
    Alecu
     
  2. jwsciontc

    jwsciontc TPF Noob!

    Joined:
    Sep 23, 2008
    Messages:
    531
    Likes Received:
    0
    Location:
    Trumbull, CT
    Can others edit my Photos:
    Photos OK to edit
    im not a nikon user, but on the canon there are modes like shutter speed control, aperture control, things like that. try using those to manually make sure the exposure is always what you want
     
  3. Early

    Early TPF Noob!

    Joined:
    Feb 8, 2008
    Messages:
    1,240
    Likes Received:
    0
    Location:
    Western NJ
    Can others edit my Photos:
    Photos NOT OK to edit
    I'm not really sure what you're asking, and don't know what you know about using your camera, but it sounds like you should try using all manual settings, including white balance.
     
  4. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

    Joined:
    Jul 8, 2005
    Messages:
    37,391
    Likes Received:
    10,665
    Location:
    Victoria, BC
    Can others edit my Photos:
    Photos OK to edit
    I think what you need to adjust is your white-balance rather than your exposure. Unless the cardboard varies greatly in size, the exposures should be the same for all, but depending on the number and intensity of lighting, and the colour of the cardboard, white-balance will vary. I believe you can create a custom WB for the D40, so if that's the case, I'd invest in an Expo-disc
     
  5. alecu

    alecu TPF Noob!

    Joined:
    Jan 28, 2009
    Messages:
    7
    Likes Received:
    0
    Location:
    Hamilton, Ontario, Canada
    Can others edit my Photos:
    Photos OK to edit
    This must be it. White Balance. It is set on Auto but I have a setting called: Preset Measure. I think if I use 1 cardboard to read wb from it and save it under preset measure, it should work with all future pictures.

    I'll try this. Thanks,
    Alecu
     

Share This Page