4-Pack DSLR & SLR Cheatsheets. Pocket sized quick reference cards. Complete series for use with Olympus E-1 E-3 E-5 E-30 E-300 E-330 E-400 E-410 E-420 E-450 E-500 E-510 E-520 E-600 E-620 Concise, durable & ultra-light 45 cards with numerous how-to tips, tricks, techniques, and charts to help create stunning images Unlike most manuals, Quik Cards are written in easy-to-understand language Just clip them in your camera bag for quick help when you're out shooting Great reference for Beginners and Pros alike