In camera metering help please!

Discussion in 'Photography Beginners' Forum' started by impressme, Jan 8, 2009.

  1. impressme

    impressme TPF Noob!

    Joined:
    Nov 12, 2008
    Messages:
    170
    Likes Received:
    0
    Location:
    Central, New Jersey
    Can others edit my Photos:
    Photos NOT OK to edit
    When I shoot in program I'm often getting underexposed shots. I've been shooting in raw lately so I've been able to adjust the exposure afterwards but I want to get it right in camera. I'm guessing part of my issue may be what metering style. I've got 4 possibilities with my camera. Can anyone explain the difference? I read the manual but I'm still a bit confused.

    My 4 possibilities are evaluative, partial, spot & center-weighted average.
     
  2. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

    Joined:
    May 1, 2008
    Messages:
    23,100
    Likes Received:
    3,767
    Location:
    UK - England
    Can others edit my Photos:
    Photos OK to edit
    an important point is that somtimes the camera meter is not perfect and I also belive that many will underexpose a little by design so as to be on the safe side (not to blow highlights). If you find your results always too underexposed just try overexposing a bit when in those conditions (exposure compensation)

    I can't really explain the metering modes - mine is what ever it was when I got the camera ;)
     
  3. rdzmzda

    rdzmzda TPF Noob!

    Joined:
    Jan 26, 2008
    Messages:
    364
    Likes Received:
    1
    Location:
    Oklahoma
    Can others edit my Photos:
    Photos NOT OK to edit
    I would say buy understanding exposure great book explains it in there as well but heres a link that will tide you over for a bit
    Digital camera metering
     
  4. impressme

    impressme TPF Noob!

    Joined:
    Nov 12, 2008
    Messages:
    170
    Likes Received:
    0
    Location:
    Central, New Jersey
    Can others edit my Photos:
    Photos NOT OK to edit
    I've got the book and I'm reading through it now. Just looking for some specific explanations.
     
  5. rdzmzda

    rdzmzda TPF Noob!

    Joined:
    Jan 26, 2008
    Messages:
    364
    Likes Received:
    1
    Location:
    Oklahoma
    Can others edit my Photos:
    Photos NOT OK to edit
    skip to the part that says metering its in the book...im pretty sure that explains it well
     
  6. Big Mike

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

    Joined:
    Dec 16, 2003
    Messages:
    33,822
    Likes Received:
    1,811
    Location:
    Edmonton
    Can others edit my Photos:
    Photos NOT OK to edit
  7. Lostbox

    Lostbox TPF Noob!

    Joined:
    Jan 5, 2009
    Messages:
    28
    Likes Received:
    0
    Can others edit my Photos:
    Photos OK to edit
    spot meters off the center 3.8% in the image, center-weighted average takes the average exposure from the entire image, partial is similar to spot but covers 13.5% of the center of the image, evaluative divides the image into a number of sections then decides how relevant that part is by terms of its location.
     
  8. Ls3D

    Ls3D TPF Noob!

    Joined:
    Dec 15, 2007
    Messages:
    1,279
    Likes Received:
    3
    Location:
    Encinitas Cali
    Can others edit my Photos:
    Photos NOT OK to edit
    I've had good results with exposure compensation in harsh lighting - just remember to keep an eye out for changes in light from new positions or even high clouds.

    Also my particular brand retains the EV even after power down, so get in the habit of checking and/or resetting between shoots.

    -Shea
     
  9. impressme

    impressme TPF Noob!

    Joined:
    Nov 12, 2008
    Messages:
    170
    Likes Received:
    0
    Location:
    Central, New Jersey
    Can others edit my Photos:
    Photos NOT OK to edit
    Thanks everyone!
     
  10. Samanax

    Samanax TPF Noob!

    Joined:
    Jan 1, 2009
    Messages:
    2,562
    Likes Received:
    0
    Location:
    Kaneohe, Oahu
    Can others edit my Photos:
    Photos OK to edit
    The XTi had a similar problem when shooting in AUTO mode. The camera would shoot okay in the other modes though. People could send the camera to Canon with a few test shots to show the problem and Canon would fix the camera. Before and after pictures were pretty shocking. But most serious hobby photographers don't use AUTO so most didn't send their cameras in. I don't know if your problem is common with other XSi shooters.
    Maybe...maybe not. Depends on what you're shooting and the kind of light you're shooting in. Is the problem showing up no matter what you're shooting and the kind of light you're shooting in? Or does it happen mostly when you shoot a specific type of shot?
    I found a few web pages that may help...

    Metering Modes

    A Guide to Exposure Metering Modes

    CAMERA METERING & EXPOSURE

    Introduction to Metering Modes

    Understanding Light Metering System

    Understanding Metering

    Understanding your camera’s built-in metering system

    Understanding Exposure: Shutter Speed, Aperture, and ISO
     
  11. gsgary

    gsgary Been spending a lot of time on here!

    Joined:
    Oct 31, 2008
    Messages:
    16,062
    Likes Received:
    2,813
    Location:
    Chesterfield UK
    Can others edit my Photos:
    Photos OK to edit
    Sorry but you will not learn exposure by shooting in program, use manual first decide what depth of field you want and select your aperture then meter the scene or if you want some movement set your shutter speed and meter the scen, if the background is light than the subject use partial, but evaluative is an alround metering mode so try starting with it and see how you go on
     
  12. Ls3D

    Ls3D TPF Noob!

    Joined:
    Dec 15, 2007
    Messages:
    1,279
    Likes Received:
    3
    Location:
    Encinitas Cali
    Can others edit my Photos:
    Photos NOT OK to edit
    Program to full Manual may be frustrating. Aperture priority & Shutter priority would probably be better steps towards full manual.

    I hardly ever switch out of evaluative metering, but I do lock and recompose as well as compensate. Also set the display to show clipped whites if you really want to keep an eye on things.

    -Shea
     

Share This Page