1. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________. Photographic Gray – 18% Gray Light Meter Base - 7 slides Copyright © 2003 - 2009 Kenji Tachibana

2. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________ Photographic Gray / 18%: Light meter base E xposure Meter: Standards and facts 1.Image brightness is a relative thing in the real world, camera LCD, viewfinder, computer screen, and the print. So, the idea of correct exposure is a combination of science and art. 2.Science – light meter has been based on the 18% gray for way over 50 years. And there are two kinds of light meters. The reflected type (on your camera) and the more accurate incident type. 3.Classic Standard – Center Weighted metering was the culmination of the old metering technology before computers. It performed with 80% or better accuracy.

3. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________ Photographic Gray / 18%: Light meter base E xposure Meter: Computerized 4.The center weighted reading measured only the 12% circle area at the center of the frame. The new standard is based on taking readings from 3 to 9 sections of the frame. 5.That exposure meter information is processed by the micro computer built into camera. The computer runs a software referred to as ‘firmware’. 6. Although it’s still far from perfect. It still takes a lot of skill and the ability to see to get closer to 100%.

4. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________ Photographic Gray / 18%: Light meter base M onitor Calibration Reference: Grayscale : All the tones from 1 to 10 should separate. If 1 & 2 don’t separate, your monitor is too dark. If 9 & 10 don’t separate, your monitor is too light. Not separating can also be an issue with Contrast.

5. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________ Photographic Gray / 18%: Light meter base M onitor Calibration Reference: Coin: It should look as though it can be picked off the screen. If it doesn’t, your Contrast may be set too low. If the highlight looks too chalky, the Contrast may be set too high.

6. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________ Photographic Gray / 18%: Light meter base M onitor Calibration Reference: Hand/Grayscale: The hand color should look believable. If it looks too warm or cool, you will probably have to adjust your monitor RGB color settings if possible. Unfortunately, in most new flat panel LCD monitors, the color is no longer adjustable.

7. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________ Photographic Gray / 18%: Light meter base S ummary: Oil painting technique has not change for a very long time. Most of the technical innovations and safe ingredients happened a long time ago. For the digital photographer, it is all about continuously changing technology. Too much emphasis has been placed in pixel count. Although a big break through in sensor technology will come into being soon. There has already been one quiet break through in sensor chip technology. More and more CMOS chips are replacing the much more expensive CCD’s

8. Teacher: Kenji Tachibana Digital Photography I Digital Photography I __________________________________ End