PS Final

Is light analog or digital?

Analog

What color is histogram?

Black

What makes the Smart sharpen filter different than other forms of image sharpening?

Brightness ranges.

What are two types of shadows called?

Drop Shadow and Cast Shadow

How does sharpening work?

Enhance edges

List the file format that is ideally suited for type and large areas of flat color.

GIF

What is the name of the control that controls middle tone?

Gamma

Which blur filter should be applied to a shadow for realism?

Gaussian blur

Which two colors make cyan?

Green + Blue

What is color depth?

The number of brightnesses in an image

True/False A RGB image is really made up of three different grayscale images that are displayed with red, green and blue pixels on the computer screen.

True

True/False A TIFF image is best used for printing, and not for internet applications.

True

True/False A contrasty image has too few brightness levels.

True

True/False An 8-bit image has 256 brightness levels (or colors)

True

True/False Encapsulated PostScript (EPS) language file format can contain both vector and bitmap graphics and is supported by virtually all graphics, illustration and page-layout programs.

True

True/False It is possible to reduce color noise without effecting image sharpness.

True

True/False Light comes to us as a continupus analog wave.

True

True/False Pixels that have a brightness value of 255 will have white clipping.

True

A RAW file can hold up to ______ bits/channel.

16 bits/channel

An 8 bit/channel RGB image can hold up to how many colors?

16,777,216

An 8-bit grayscale image holds how many brightness levels?

256 brightnesses

If you take 3 x 5 inch picture and make it 6 x 10 inches, how many times more pixels need to be created?

4X

What are two types of noise in a digital image?

Luminosity and chromatic

What tonal part of the image does the gamma represent?

Middle tones

What layer blending mode should you use when creating shadows?

Multiply.

Which layer blending mode ignores grays and is very useful in helping to sharpen an image with the High Pass filter?

Overlay

List the two file format in Photoshop that work best for printing.

PSD and TIFF.

Using RGB values, what brightness value combination makes bright magenta?

R: 255, G: 0, B: 255

Using RGB values, what brightness value combination makes middle tone blue?

R: 50, G: 50, B: 255

Provide two reasons why noise can appear in a digital image.

under exposure, high ISO

Brightness levels for an 8-bit/channel digital image range from ____ to ____ .

0 to 255

Howmany pixels are in a 10 megapixel image?

10,000,000

To change the number of pixels in a digital image in PHotoshop, does the Resample box need to be checked or unchecked?

Checked

What are the two most common fringing colors?

Cyan and Magenta.

The histogram plots pixel brightness values on a graph. Does the left side of the graph represent the dark or light pixels?

Dark

True/False A JPEG image makes the file size smaller by removing pixels from the image.

False

True/False A pixel can be blurry.

False

True/False The unsharp mask sharpens he image by making edges softer, thereby making the middle areas appear sharper.

False

True/False A shadow will get sharper the further away it moves from the object casting it.

False.

List the two web file formats that support 24-bit color.

JPEG and PNG

What color space mode should be used when you want to sharpen an image but not change pixel color values?

LAB

Why does color fringing occur in a digital image?

Lens quality in the camera is low. Or the back ground is too bright, or a wide angle lends was used. Or all of the above.

What makes a digital image appear out of focus?

Low edge contrast

What are the three subtractive primary colors?

cyan, magenta, yellow

What are the three additive primary colors?

red, green, blue