grey cards and exposure

Discussion in 'Photography Beginners' Forum' started by electricalperson, Jan 28, 2010.

  1. electricalperson

    electricalperson TPF Noob!

    Joined:
    May 2, 2009
    Messages:
    51
    Likes Received:
    0
    Can others edit my Photos:
    Photos OK to edit
    can anybody help me explain how to measure exposure using a grey card? i am having a hard time understanding. and does anybody know a good light meter that doesnt cost 200+ dollars?:thumbup:
     
  2. 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
    You just point your camera at it and zero the meter out.

    Pick a shutter speed or aperture, then adjust the other one till the meter is zeroed...
     
  3. bhphotography

    bhphotography TPF Noob!

    Joined:
    Oct 9, 2009
    Messages:
    274
    Likes Received:
    0
    Location:
    Ottawa, Ontario
    Can others edit my Photos:
    Photos NOT OK to edit
    There are some older model light meters that are less sophisticated. Check ebay for some or your local used classifieds.
     
  4. IgsEMT

    IgsEMT No longer a newbie, moving up!

    Joined:
    Jul 27, 2009
    Messages:
    2,694
    Likes Received:
    48
    Location:
    NYC
    Can others edit my Photos:
    Photos NOT OK to edit
    some people don't even use meters anymore since changed to digital.
    if you're on a tight tight budget, gray card does AMAZING job. Personally, it the best $5 I ever spend on photography.
     
  5. dhilberg

    dhilberg TPF Noob!

    Joined:
    Jul 26, 2008
    Messages:
    516
    Likes Received:
    0
    Location:
    Washougal, WA
    Can others edit my Photos:
    Photos OK to edit
    If you're really cheap, you don't even need a gray card for metering. The palm of your hand is about one stop brighter than neutral gray (regardless of race). Flip your camera into spot metering mode, meter off the palm of your hand and overexpose by one stop.

    I would still get a gray card though for absolute precision. Plus, you can use them for setting a proper white balance.
     
  6. Felix0890

    Felix0890 TPF Noob!

    Joined:
    Oct 2, 2009
    Messages:
    472
    Likes Received:
    2
    Location:
    Miami , FL
    Can others edit my Photos:
    Photos NOT OK to edit
    A gray car is used when you're shooting something that is mostly black or white, which tends to fool your meter into over or underexposing. A gray card is basically put in front of the camera in the same lighting that your subject will be under and use the exposure that the camera gives for the gray card.

    Like it was mentioned above, you can get a free card by calibrating your hand. Go to a shop that sells them, meter off the gray card, then meter off your hand. Remember the difference in the exposure (It should be 1 or 2 stops brighter) and then use your hand as a gray card from then on always remembering to overexpose that difference of your palm.

    If you still don't get it, you need to read more about your camera's sensor and how it sees things in gray. Understanding Exposure has a section just on this.
     

Share This Page

Search tags for this page

hand as 18% grey card

,

how to meter with a grey card

,

measure exposure with gray card

,

palm hand photo exposure