1600 vs 16oo

Discussion in 'General Shop Talk' started by UUilliam, Jul 24, 2009.

  1. UUilliam

    UUilliam TPF Noob!

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    Well...
    what is better to use?
    1600 ISO (800 400 200 100)
    or
    16oo ISO (8oo 4oo 2oo)

    I know the 16oo is achieved by using Highlight tone priority
    but i dont understand the difference...
    Would 16oo be brighter than 1600 but the same speed? or will it expose for the highlights?

    Thanks in advance
     
  2. PhotoXopher

    PhotoXopher TPF Noob!

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    You lost me at oo.
     
  3. AlexColeman

    AlexColeman TPF Noob!

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    Im sorry but that makes no sense.
     
  4. UUilliam

    UUilliam TPF Noob!

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    Might only be canons that do it

    Basically i went into my c. Func and i turned Hightilght tone priority on and my ISO was going 2oo, 4oo, 8oo, 16oo
    instead of the norm.

    I done a google search, apparently it is to allow photographers (landscape and stuff like that) to take images of High contrast scenes without blowing the highlights (larger dynamic range) at higher ISO
     
  5. swmocity

    swmocity TPF Noob!

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    good question...someone answer please lol...i took some photos not to long ago with the highlight tone priority ...didnt see a difference...ive heard the highlight tone priority causes more noise...i dont know though
     
  6. Josh66

    Josh66 Been spending a lot of time on here!

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    ...Never heard of that.


    After a little googling, it seems that the benefits are mostly for JPEG shooters.
     
  7. KmH

    KmH Helping photographers learn to fish Supporting Member

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    Besides as ISO goes up, dynamic range goes down.
     
  8. Josh66

    Josh66 Been spending a lot of time on here!

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    Does it? ...Really?



    (never knew that)
     
  9. Dwig

    Dwig TPF Noob!

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  10. musicaleCA

    musicaleCA TPF Noob!

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    Highlight tone priority expands the dynamic range of the sensor upwards to capture more highlights, at the expense of noise in the shadows at the other end of the sensor's dynamic range. It's very, very useful for shots where you want to preserve detail in bright highlights, and is not restricted to JPEG. Canon uses the oo's to denote that you're in HTP mode when it displays the ISO, probably just so that you don't forget and mess up later shots. As and example, I used it to get this shot:

    [​IMG]
     
  11. UUilliam

    UUilliam TPF Noob!

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    so Really, In daylight (although Normal ISO 100 would work)
    You should set Highlight tone priority to reduce noise in the highlights (use ISO 2oo)
    And a night go back to your normal ISO mode?

    I Think i understand it now tbh
     
  12. Josh66

    Josh66 Been spending a lot of time on here!

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    It sounds like it mostly to preserve the highlights (avoid overexposure) - not necessarily reduce noise.
     

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