2 Replies Latest reply on Mar 8, 2011 2:10 PM by Jeff Schewe

# How ACR determines color of clipping warnings?

The clipping warnings (triangles in the upper right and left area of histogram) can be W (white), R, G, B, C, M, Y or K (black).

How is computed the color of a triangle? For example in the histogram here below, the rightmost bar is white and red. Why is the triangle white and not red?

And the leftmost bar is white, cyan and blue. Why is the triangle white?

There is a general formula?

Thank you.

Mauro Boscarol

• ###### 1. Re: How ACR determines color of clipping warnings?

First, let me say I'm not an authority on this...

But I have always assumed that the color of the warning triangle is combined from the channels that are clipped.

For example,

• No clipping is shown as black.
• If only one channel is clipped it will be that color - e.g., if blue is clipped, it will be blue.
• If the blue and red channels are clipped, it will be magenta.
• If the green and red channels are clipped, yellow.
• If the green and blue channels are clipped, cyan
• If all three channels are clipped, it will be white.

-Noel

• ###### 2. Re: How ACR determines color of clipping warnings?

Noel Carboni wrote:

But I have always assumed that the color of the warning triangle is combined from the channels that are clipped.

Correct...the triangle shows 1, 2 or 3 colors clipping. When it's white, all 3 colors are clipping even if the histogram indicates more levels of one or two are clipping more than the 3rd.