130 AppendicesSpecificationsPowerShot G1Image sensor: Approx. 3.34 million-pixel (total) / 1/1.8 inch CCD(Effective number of pixels: approx. 3.24 million)Lens: 7 (W) - 21 (T) mm (35mm film equivalent: 34 - 102mm)F 2.0 (W) - 2.5 (T)Digital tele-converter: 2x, 4x (Maximum 12x digital zoom is available whencombined with optical zoom)Autofocus method: TTL autofocus (continuous or single)Focus lock and Manual focus are availableFocusing range: Normal AF: 70 cm (2.3 ft.) - ∞(from tip of the lens barrel) Macro AF: 6 cm (W) / 20 cm (T) - 70 cm(2.4 in. (W) / 7.9 in. (T) - 2.3 ft.)Manual focus: 6 cm (W) / 20 cm (T) - ∞(2.4 in. (W) / 7.9 in. (T) - ∞)Shutter: Mechanical shutter + electronic shutterShutter speeds: 8 - 1 / 1000 sec.8 sec. shutter is available in Shutter-Priority mode or ManualmodeHigh-speed shutter settings from 1/640 to 1/1000 sec. areavailable only at F8 aperture settingSlow shutter speeds of 1.3 sec. or more operates with noisereductionSensitivity Auto, ISO 50, ISO 100, ISO 200 and ISO 400 equivalent(equivalent film speed) : (In Auto mode, camera automatically adjusts sensitivity inthe range of ISO 50 to ISO 100 equivalent)Light metering method: Center-weighted average metering or Spot meteringExposure control method: Program AE, Shutter-priority AE, Aperture-priority AE orManual exposure controlAE lock is availableExposure compensation: ± 2.0EV (in 1/3-stop increments)Auto exposure bracketing (AEB) is availableWhite balance: TTL auto white balance, pre-set white balance (availablesettings: Daylight, Cloudy, Tungsten, Fluorescent or Flash) orCustom white balanceBuilt-in flash: Operating modes: Auto, Red-eye reduction auto,Red-eye reduction On, On or OffFlash range: 70 cm - 4.5 m (2.3 ft. - 14.8 ft.) (W),70 cm - 3.6 m (2.3 ft. - 11.8 ft.) (T)(When sensitivity is set to ISO 100equivalent)(W): wide angle (T): telephoto