I've always wondered how to make icons and so one day I discovered the "Icon Composer" application. It didn't look like a professional icon composer because it had a pixelated icon. Isn't that an oxymoron for an icon maker to have a pixelated icon? Pretty poor example if you ask me. Anyway; am I using the right Application to make professional icons? I've also noticed that if you open the icon files of Apple built-in OS X applications in the Icon Composer application that it only has 3 sizes for each icon. Why does Icon Composer have 4 sizes to make icons if Apple only uses three of them on all of their Apps? I want to use Photoshop to create my own icons so should I use just the three slots sizes that Apple uses on their applications (16X16; 32X32; 128X128) and disregard the 48X48 slot icon size in the application? What in the world is a Bit Mask and why isn't there one for the full sized (128X128) icon? Does this have to do with transparency? By the way; are there better icon maker applications out their or is this the best one? Thanks for any feedback...No...No...not the microphone/speaker kind.