Basic use of Levels & Curves in PhotoShop CSUse of the Lasso Tool in Paint Shop ProFlat Field Images and Why They Are UsedCreating LRGB Images in Photoshop CSHigh Pass Sharpening using PhotoShop CSLayer Mask Sharpening using Paint Shop ProStar Repair using PhotoShop CSStar Repair using the Smudge Tool in PhotoShopVariable Brightness Mask Application in PhotoShop CSStar Shaping and Color Enhancement in PhotoShop CS