What is unrepairable?

Discussion in 'Beyond the Basics' started by Val, Dec 23, 2007.

  1. Val

    Val TPF Noob!

    Joined:
    Dec 16, 2007
    Messages:
    161
    Likes Received:
    0
    Can others edit my Photos:
    Photos OK to edit
    Over exposure resulting in burnouts is unrepairable. What else?

    If i shoot JPG can i later correct white balance? If not can i correct it using RAW?

    What about exposure? If i shoot RAW there is exposure scale, but it seems to me thats just a software algorithm very limited in its action?
     
  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
    White balance corrections are as simple as one click with a RAW image. In JPG it's still doable, but there's a little more work involved.
     
  3. Alex_B

    Alex_B No longer a newbie, moving up!

    Joined:
    Aug 30, 2006
    Messages:
    14,491
    Likes Received:
    206
    Location:
    Europe 67.51°N
    Can others edit my Photos:
    Photos NOT OK to edit
    a good exposure is a good exposure, a really bad exposure where you did not achieve what you wanted, will always be a bad exposure. corrections always work within narrow limits. what was not captured by the sensor, is not in the
    RAW data and hence cannot be rescued.


    however, RAW being 12 to 14 bits, instead of 8, allow alot more correction exposure-wise than jpg. you do not get posterizing that easily and you might be able to drag out more informations from the shadows (dark parts of the image)
     
  4. Val

    Val TPF Noob!

    Joined:
    Dec 16, 2007
    Messages:
    161
    Likes Received:
    0
    Can others edit my Photos:
    Photos OK to edit
    What about colour modes and saturation (eg Nikon [FONT=Arial, Helvetica, sans-serif]=Color Mode IIIa) ? Is this post processing done in camera or does it actually have effect on RAW images?
    [/FONT]
     
  5. Garbz

    Garbz No longer a newbie, moving up!

    Joined:
    Oct 26, 2003
    Messages:
    9,713
    Likes Received:
    203
    Location:
    Brisbane, Australia
    Can others edit my Photos:
    Photos NOT OK to edit
    Poor composition! Basically blown highlights and being more than 0.66EV off in exposure even in raw is what I consider unrepairable. Just look at the difference of a properly exposed photo and one you manipulate in post. Especially if the manipulation is to brighten the image the noise goes up and the quality is not the same.

    Don't rely on anything to be repairable in post except for white balance which truly is a post process for RAW files.
     
  6. 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
    I think (not 100% sure) that this has no affect on the RAW, just the JPG that is processed in camera. It should be easy to test though - set your camera up to shoot RAW+JPG and you should be able to tell pretty quickly if the effects are being applied to the RAW or just the JPG.
     
  7. Val

    Val TPF Noob!

    Joined:
    Dec 16, 2007
    Messages:
    161
    Likes Received:
    0
    Can others edit my Photos:
    Photos OK to edit
    Looks like purely post processing...

    Why would anyone want to use those functions then? Surely you can adjust it in PS better and more precisely. On the other hand it doesnt hurt either. Hmm
     
  8. Alex_B

    Alex_B No longer a newbie, moving up!

    Joined:
    Aug 30, 2006
    Messages:
    14,491
    Likes Received:
    206
    Location:
    Europe 67.51°N
    Can others edit my Photos:
    Photos NOT OK to edit
    those functions are for those who want no custom processing whatsoever and use jpg
     
  9. Sideburns

    Sideburns TPF Noob!

    Joined:
    Aug 14, 2007
    Messages:
    2,796
    Likes Received:
    0
    Location:
    Windsor, Ontario
    Can others edit my Photos:
    Photos OK to edit
    The settings don't affect RAW. that's for people who don't wanna play as much with colour later.

    Also, anything overexposed by 1 stop or underexposed by 1 stop is pretty much gone with digital. You may get a usable image, but you can't get the proper exposure with digital through PP, and still get perfect detail.

    The latitude of digital sensors is 1 stop. Over or under that...and there's unrecoverable detail lost.
     

Share This Page

Search tags for this page

canon+t3+vs t3i

,

unrepairable camera