optical http://www.adorama.com/alc/taginfo/optical Article: 100 in 100, Part II: More “Serious” compact camera must-have features.100 photography tips in 100 days: Day 83 http://www.adorama.com/alc/article/8522 Article: How To Use Image Stabilization.Find a stable approach <p><span style="font-size: small;">Optical image stabilization or anti-shake works by moving the image to counteract the effects of handheld camera shake&mdash;some systems use a moving group of elements in the lens, others move the sensor itself, and some also set a higher ISO when motion is detected so the camera will select a higher shutter speed. </span></p> http://www.adorama.com/alc/article/8343 Article: BUYING GUIDE: Optical Filters.You could do some of these effects in Photoshop--but why wait when you can get it done in your camera? <p><span style="font-size: small;">Perhaps the single greatest thing about optical filters--those transparent, usually round, usually glass light modifiers that screw onto your lens--is that they allow you to add creative effects easily at the moment of exposure. </span></p> http://www.adorama.com/alc/article/8135