The CMP Digital Target 4, 570 color patches for more precise profiles !
individually measured - reference files in Lab and Spectral mode
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Adobe Camera Raw or Lightroom use DNG profiles calculated on a xrite ColorChecker target shot Softwares like DxO, Capture One use ICC profiles calculated on a CMP Digital Target 4 shot Please choose the right target depending on the software you use. |
you can find more informations on raw levels interpretation here
The CCD or CMOS sensors
used in digital cameras pose some problems with regard to colorimetry: nonlinear
drift of colors (not easily corrected with curves), high lights without details
and imperfect white balance. With the adequate calibration and selection of the
proper settings when creating the profiles, you can get close to a
“traditional” rendering.
Also, just like
with printers, each sensor has a unique behavior: for the same camera model,
each individual unit is unique and features minor but noticeable differences for
the demanding photographer! This is why it can be difficult to successfully use
the ICC profiles (when available) created for a camera which is not yours (and
thus behaves differently).
The procedure is simple: you photograph a test chart featuring 570 referenced colors (36 levels of grays and 534 colors) with optimization of the common hues (skies, flesh tones, green vegetation, saturated colors) and of those hues which are typically a problem for digital sensors. The image file is then processed by an ICC profile creation software which compares the test chart reference file with the colors in the file from the camera. After comparison, you obtain a colorimetric correction ICC profile which you can use in any ICC compatible application (such as Photoshop) to bring new life to your images (even the ones you shot before calibration, by just applying the profile).The profiles obtained correct the chromaticness (colors) but also the saturation and contrast of your images.
move your mouse over the picture to see before / after ICC profile's correction
with RAW shooting and DxO Optics Pro development
with / without CMP ICC profiles
There is no special effect, only the action of the profiles
CMP specific rendering in highlights
CMP ICC profiles in DxO Optics Pro
move your mouse over the picture to see before / after ICC profile's correction
move your mouse over the graph
CMP specific rendering in highlights
CMP ICC profiles in DxO Optics Pro
move your mouse over the picture to see before / after ICC profile's correction
you can find more informations on raw levels interpretation here
Copyright(c) 2013 christophe métairie photographie. Tous droits réservés.
