Ключевые слова: 20d, 35mm, aperture, backgrounds, big, black, camera, close, cmos, dark, digicam, digital, display, dslr, electronics, equipment, eyesight, focus, hobbies, image, industry, lens, lenses, mega, megapixels, modern, objects, occupation, optical, optics, photo, photograph, photographer, photographic, professional, quality, reflex, sensor, shutter, single, slr, store, technique, technology, up, white, zoom,