1. The Digital SLR

2. 1/2.5” sensor 1.5x crop “APS-C” sensor 35mm film “full frame” sensor Sensor size 384 mm 2 25 mm 2 864 mm 2 Larger sensors => much improved noise!

3. ISO100ISO200ISO400 ISO800ISO1600 Canon A570IS 7.1 Megapixels 1/2.5” sensor 5.74 x 4.3mm (24.7mm 2 ) Area: 3.48 μ m 2 /pixel 100 200 400 800 1600 images: dcresource.com

4. ISO100ISO200ISO400 ISO800ISO1600 Canon 30D 8.2 Megapixels APS-C sensor 22.5 x 15mm (337.5mm 2 ) Area: 41.16 μ m 2 /pixel 100 200 400 800 1600 images: dcresource.com

5. 30D A570IS 8.2 Megapixels 22.5 x 15mm (337.5mm 2 ) Density: 41.16 μ m 2 /pixel 7.1 Megapixels 5.76 x 4.29mm (24.7mm 2 ) Density: 3.48 μ m 2 /pixel ISO100 ISO1600

6. Effective use of flash

8. Focal length rangesUltrawide Standard zoom Telephoto

9. 36mm Focal length ranges16mm320mm 1200mm

10. Playing with perspective 24mm 110mm

11. Ultrawide19mm

12. Small Depth of Field

13. Uses of small depth of fieldPortraitsFlowers Sports Isolation

14. Continuous shooting

15. Other advantages Short shutter lag Faster autofocus Adjustable in-camera processing RAW images – noise, exposure, white balance Disadvantages Size Cost Less versatility with base kit Maintenance