« previous next »
Pages: [1]   Go Down

Author Topic: Subsample chorma  (Read 3531 times)

Offline runner

  • Newcomer
  • *
  • Posts: 49
    • View Profile
Subsample chorma
« on: June 14, 2007, 08:22:52 AM »
Hi All
When saving, What does subsample chorma do???
Logged

Offline Kirk Baker

  • Senior Software Engineer
  • Camera Bits Staff
  • Superhero Member
  • *****
  • Posts: 25020
    • View Profile
    • Camera Bits, Inc.
Re: Subsample chorma
« Reply #1 on: June 14, 2007, 09:38:12 AM »
Quote from: runner on June 14, 2007, 08:22:52 AM
When saving, What does subsample chorma do???

It instructs Photo Mechanic's JPEG compression to subsample the color information in your images when compressing them.  The result is that you trade off some color fidelity to get additional compression.  Photoshop automatically kicks in chrominance subsampling at quality level 6 or 7 and quality levels higher than that do not do the subsampling.

-Kirk
Logged
Pages: [1]   Go Up
« previous next »