To quickly cycle through a painting tool’s blend modes, hold the Shift key and tap the “+” (plus) or “-” (minus) to move forward or backwards through the list.To disable smoothing for all brushes, click the lock icon next to the Smoothing option in the Brush Settings panel (locking the setting allows you to select different brushes while keeping the Smoothing locked).Option -taping (Mac) | Alt -tapping (Win) two numbers quickly will give you that exact amount (5 + 4 = 54%, 00 = 0%).Option -tap (Mac) | Alt -tap (Win) a numeric key to add the percentage of the tapped number (1 = 10%, 2= 20% etc.).Full Size Brush Tip – the circle icon size represents all pixels to be painted.Normal Brush Tip – the circle icon size represents pixels to be painted with greater than 50% effect.Standard – to display the small iconic cursors.To customize the display of the painting cursors, select Preferences > Cursors and select from the following: To use the change Brush Opacity (instead of the Brush Hardness), based on the vertical drag movement, select Preferences > Tools and uncheck “Vary Round Brush Hardness based on HUD vertical movement”.On Windows: Control + Alt + Right click -drag left/right to decrease/ increase brush size and up/down decrease/ increase brush hardness.On Mac: Control + Option (Mac) –drag left/right in order to decrease/increase brush size and up/down to decrease/ increase brush hardness.Resizing Using the HUD (Heads-Up Display)
Scroll down (almost the bottom of the list) and enter any single character to set a new shortcut for Decreasing/Increasing Brush Size.