Acer Film Scanner Bedienungsanleitung PDF herunterladen (Seite 45)

English

With the information from the histogram, we will be better able to

adjust an image with the histogram tools. Below the Histogram, there

are three tiny triangles:

By dragging these triangles, you can adjust the brightness and

contrast of an image precisely. For example, if you drag the Shadow

Threshold triangle to the right, the pixels with lower brightness level

than the Shadow Threshold will be cut into black, which makes the

image look darker. If you drag the Highlight Threshold triangle to the

left, the pixels with higher brightness level than the Highlight

Threshold will turn white, which makes the image look brighter.

The Midtone triangle is used to control the brightness level of midtone

pixels. Dragging the Midtone triangle to the left will increase the

brightness level of midtone pixels and make the midtone area of

image look brighter. Dragging the triangle to the right will decrease the

brightness level of midtone pixels and make the midtone area of

image look darker. Below is an example of using the histogram tools

to enhance the image and add more detail:

Shadow

Threshold

Highlight

Threshold

Midtone

Before adjustment

After adjustment

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 69 70

Keine Kommentare

Acer Film Scanner Bedienungsanleitung Seite 45