I wonder why the low and high ISO's are reserved for JPG's?

Discussion in 'Fuji X100, X100S, and X100T' started by rpavich, Jul 10, 2013.

  1. rpavich

    rpavich FujiXspot Rookie

    17
    Jul 10, 2013
    While I wait for mine to be delivered....I was reading a review about the X100S and they mentioned that the highest ISO's are only available in Jpg mode. That made me wonder why...

    Bummer.
     
  2. Tdp

    Tdp Guest

    I think the low limit for JPGs is really an underexposed low limit for RAW that is overexposed by the JPG engine before being saved in the camera....and the opposite for the high end - or something like that. I might have it backwards, it is early.

    Regardless, I think the RAW ISO range is native and the JPG ISO range is extended via software manipulation.
     
  3. Luke

    Luke FujiXspot Top Veteran Subscribing Member

    865
    Jan 31, 2013
    Milwaukee, WI USA
    Luke
    Tdp explained it perfectly...basically they are "fake" ISO numbers......but all the other camera makers use them. The only difference is that Fuji's ISO25600 (or whatever) is useable.
     
  4. rpavich

    rpavich FujiXspot Rookie

    17
    Jul 10, 2013
    Interesting, thanks for explaining. I saw some shots at very high ISO's and I have to say that they were very usable....and my point of reference is a Canon 5D mark III.
     
  5. rpavich

    rpavich FujiXspot Rookie

    17
    Jul 10, 2013
    Thanks flysurfer...that really makes what's happening more clear.