Auto Color effect and Auto Contrast Effect

Auto Color Effect and Auto Contrast Effects in After Effect

Auto Color effect adjusts the contrast and color of the image after analyzing the shadows, mid-tones, and highlights of the image and the Auto Contrast effect adjusts the overall contrast and fusion of colors. Each effect maps the brightest and darkest pixels in the image to white and black and then redistributes the intermediate pixels. The result is that highlights appear brighter and shadows appear darker.

Click on Below Video: Auto Contrast Effect

Because the Auto Contrast and Auto Color don’t adjust channels individually, they don’t introduce or remove the color casts.

The Auto Levels effect uses many of same controls as Auto Color effect and Auto Contrast effects.

The below mention 6 effects work with 8-bpc and 16-bpc color:

1. Temporal Smoothing

The adjacent frames range, in seconds, analyzed to determine the amount of correction required for every frame, relative to its surrounding frames. If temporal smoothing is 0, then each frame is analyzed separately, without regard for surrounding frames. Temporal Smoothing can result in the smoother looking corrections over time.

Click on Below Video: Smooth Color Transitions in After Effects

2. Scene Detect

When selected, frames beyond a scene change are neglected when surrounding frames are considered for temporal smoothing.

3. Black Clip, White Clip

How much of the highlights and shadows are clipped to the new extreme highlight and shadow colors in the image. Setting the clipping values too high can reduces detail in the highlights or shadows. A value in the range from 0.0% to 1% is suggested. By default, highlight and shadow pixels are clipped by 0.1%—that is, the first 0.1% of either extreme is neglected when the lightest and darkest pixels in the image are identified. The highest and lowest values within the range after clipping are then mapped to output white and output black. This method assures that input white and input black values are based on representative rather than extreme pixel values.

4. Snap Neutral Midtones

In this method, it identifies an average nearly neutral color in the frame and then adjusts its gamma values to make the color neutral.

5. Blend With Original

Transparency of the effect. The effect result is combined with the original image, with effect result composited on top. The higher you set the value, the less the effect affects the layer.

Example: If you set the value to 100%, the effect has no visible result on the layer; if you set the value to 0%, the original image doesn’t show through.

Click on Below Video: After Effects Tutorial How to change the Color of something in your Scene

A quick way to remove or reduce the flicker caused by fluctuations in exposure and color from one frame to next is to apply the Auto Color effect. It is useful in reducing the flicker of old film or for correcting for the flickering color of a light source.