Join John Derry for an in-depth discussion in this video Using the exercise files, part of Photoshop CS5: Painting with the Mixer Brush.
If you are a premium member of the lynda.com Online Training Library, or if you…are watching this tutorial on a DVD-ROM, you have access to the exercise files…used throughout this title.…I've put the files into the Exercise Files folder, and in each of these, you'll…find some content. There will be various Photoshop PSD files that you can load…that I describe within the chapter.…Also, I've got some brushes that you can load, and we explain, in Chapter 5, how…to load these brushes into Photoshop's Tool presets.…
Once again, there is a source file here that you can use to follow along with…what I'm doing, and so on and so forth.…So basically, you have got a number of pieces of content here that I'll call…out during the title, and this is where you are going to find them, in the Exercise folder.…If you are a monthly subscriber or annual subscriber to lynda.com, you don't…have access to the exercise files.…But you can follow along from scratch with your own assets.…Let's get started.…
- Understanding the axes of motion with a Wacom tablet
- Choosing a brush shape and Bristle Tip
- Adjusting brush angle
- Loading color and control the behavior of the Mixer Brush
- Modifying surface texture
- Simulating the texture of canvas
- Saving tool presets for brushes
- Creating a painting from a photograph
- Painting from scratch with the Mixer Brush
Skill Level Intermediate
Q: What factors affect how well the mixer brushes in Photoshop perform? Does document size (i.e. 72dpi vs. 240dpi) affect the performance of the brushes? How can I maximize brush performance?
A: The recordings for this tutorial were generally done at a standard screen resolution, but a real-world situation will often require higher resolutions. For example, offset printing generally dictates files at 300ppi (pixels per inch). Inkjet printing is often discussed in terms of 240ppi. For web-based viewing, imagery at 72ppi is considered acceptable. You can easily determine the pixel resolution of an image by multiplying the size in inches by the above ppi (pixels per inch) factors.
Let's use a typical real-world size as an example: 20" X 24". This is a common photographic print and frame size.
72ppi = 1440p X 1728p = 2,488,320 pixels
150ppi = 3000p X 3600p = 10,800,000 pixels
300ppi = 6000p X 7200p = 43,200,000 pixels
Note that each of these resolution factors quadruples the total pixel count.
It is the amount of pixels being manipulated that dictates both application and brush performance. With this in mind, we can state that performance decreases as image pixel size increases. There are three primary factors that affect an application's ability to handle large pixel-based manipulation.
For the full FAQ, please download the PDF file here.