1. DIGITAL PHOTO 1 Camera Comparison Automatic vs. SLR

2. Photo(light) graphy(write) - to “write” with “light” Camera Obscura-"dark room“  The earliest mention of this type of device was by the Chinese philosopher Mo-Ti (5th century BC). Light travels in a straight line and when some of the rays reflected from a bright subject pass through a small hole in thin material they do not scatter but cross and reform as an upside down image on a flat surface held parallel to the hole.

3. Difference between film and digital cameras? Film camera- image is recorded on film. Digital camera- image is recorded on an image sensor (CMOS/CCD) then stored on a memory card. The big difference is how your image is recorded.

4. Were is a CMOS/CCD? The CMOS/CCD is positioned directly behind the camera lens (where the film in an old-style camera would be).

5. A CMOS/CCD is the heart of a digital camera. It is made of millions of tiny, light sensitive squares arranged in a grid pattern. These squares are called pixels. Good cameras use CMOS/CCDs with many more pixels and this is why cameras are compared by how many megapixels (millions of pixels) they have. A camera rated as having 6 megapixels has 6 million pixels in its CMOS/CCD—probably arranged in a rectangle with three thousand across and two thousand down (3000 x 2000 = 6 million). What is a CMOS/CCD?

6. Digital Photography is based on the Pixel - Picture Element The more pixels per square in the better the quality of the image - it is that simple. Pixel—(Picture Element) The smallest element of a digitized image. One small square of light among the many squares that makeup an image on a computer screen.

7. Megapixel -Megapixel—A unit equal to one million pixels. The higher the resolution, the more pixels in an image and therefore the greater the image quality. An image file that is 1 megapixel (MP) can make a photo realistic print of 5 x 7 inches; a 2 MP file can make an 8 x 10-inch print; a 3 MP file can make an 11 x 14-inch print.

8. Digital Vs. Optical Zoom Optical Zoom- Zooms by using a lens. Image quality stays high throughout the zoom range. The best quality and option to look for on a camera.

9. Digital Zoom Digital Zoom- Zooms by cropping the image to a smaller size, then enlarges the cropped portion to fill the frame again. Results in a loss of quality.

10. Automatic and SLR

11. SLR? Single Lens Reflex You see what you get, through the lens viewing. Light passing through the lens Mirror Shutter CCD Viewfinder

12. Choosing a Camera Automatic vs. SLR ● Smaller Bigger ● Delayed shutter Immediate image ● Same lens Interchangeable lens Camera controls Manual Settings most settings (You have control of Shutter/Aperture) No through the lens Through the lens viewing viewing Less Expensive More Expensive