While Photoshop doesn’t offer a dashed line option, such as that found in Illustrator’s Stroke palette, you can easily simulate them by editing a brush in the Brushes palette.
A layer mask is great for creating masks for a single layer.
If you own a newer slide scanner, you’ve probably heard of Applied Science Fiction, developers of Digital ICE, the fantastic scratch- and dust-removing software.
Spot colors can be used with CMYK or Multichannel documents intended for print to add additional colors, create “bump plates,” and to control varnishes.
I have been using the Hue and Saturation Adjustment tools that Photoshop provides for a long time.
Photoshop uses pixels to display graphics. Bits of light and darkness that make a map of the image.
A lot of designers I know hate math, they are right brained and cannot stand those pesky little numbers cramping their creative style.
I’m a Photoshop guy in a Photoshop world. Pretty narrow minded outlook, but that is how I’ve operated for quite some time, and quite contentedly.