Color Space - Sony NEX-EA50 NXCAM Handbook

Color Space

The NEX-EA50's PICTURE PROFILE uses the concept of a color space based on three elements — Hue, Saturation and Luminance.
This color space can be represented as a shape that resembles two cones joined at their bases. When you slice the color space at a
certain luminance level, a circular cross section appears. In this cross section, the angle from the circle's center line indicates hue,
while the distance from the circle's center represents saturation.
Because some color-related settings in PICTURE PROFILE use this color space concept, familiarizing yourself with this concept will
likely make it easier for you to understand how those settings should be used.
DETAIL
The DETAIL function processes video signals to emphasize image outlines. It can be used to make the subject standout clearly
and enhance the fineness of the overall image. The function also deals with the image texture, affecting the appearance of coarse
surfaces and transparent materials, for example.
DETAIL is also a very important image setting when shooting people. Its settings can change the atmosphere by determining the way
face wrinkles and skin tones look.
But used inappropriately, the DETAIL function may lead to a loss of image texture or highly visible image noise. By understanding the
principles of DETAIL signal processing as shown below, you should be able to use this function effectively.
Concept of DETAIL
DETAIL is a type of signal processing that emphasizes
image edges. In the example below, there is a large
luminance variation between the lace pattern and the
background. In the charts below, whose vertical axes
represent luminance, (a) shows the change in luminance
levels in the image section inside the red square. The
DETAIL function generates (b) from (a). (b) serves as
the basis of the DETAIL signal and combines with (a).
The resulting (c) represents (a) with the DETAIL signal
applied, emphasizing both the white and black edges in
the image.
Because the DETAIL function emphasizes image outlines
and makes the image look sharper, it is sometimes
referred to as the sharpness function.
Luminance
41 41
Hue
Detail = OFF
Luminance Luminance
(a)
(c)
(b)
Detail = ON