41. The camera had no light meter . 42. All in-camera meters are reflected-light meters . 43. To calibrate light meters , whether in a camera or hand held, the 18 % gray card was conceived. 44. The Canon EF contained a silicon photocell light meter with a range of shutter speed and the aperture. 45. "They wouldn't know a light meter . 46. Since then, we've seen the light meter punched up about 1, 000 watts on clothes and other accessories. 47. The batteries ( two PX 675 type mercury cells ) were only needed for the CdS light meter . 48. We program a light meter , and ( the tabulation ) is based on the light passing through the hole. 49. Manually setting a camera to expose the film properly takes two steps, even after taking a light meter reading. 50. In another booth, people tested light meters , holding them aloft as if in praise of the gods of photography.
