digitalcamerasandwebcams(文件)
【正文】 light required ? The Stylus has an aperture range of ? would let more light in, can be used in darker conditions Automatic Settings ? It take the digital camera some time to calculate focus, colour balance, shutter speed, F settings ? Remember this when taking the picture ? Moveable focus Automatic Setting Cont’d ? Different lighting gives different results ? Incandescent – gives warm tones Automatic Settings – cont’d ? Fluorescent washes out colours Automatic Settings ? Underwater pictures rapidly loose the Reds and Yellows the deeper you go the longer wave length light gets absorbed (warm colours). ? Require additional lighting to fill in. Filters can also work (Red for example). Batteries ? Lithium Ion – Best, most expensive, fast charging, no memory – last 23 years ? NiMh – Nickel Metal Hydride – good value, 400 charges ? NiCad – not usual for digital cameras ? Sizes – proprietary or available off the shelf? Batteries rating Batteries are rated by voltage and milliamp hours (mAH). Most AAsized NiMH batteries are rated up to 2100 mAH. A 2100 mAH battery can deliver 2,100 milliamps (mA) for one hour (H). Generally speaking, the higher the rating, the more pictures you can take. Batteries cont’d ? Storage – cool dry place when not in use ? Travelling – get them charged first – you may have to demonstrate your equipment at security ? Europe/Asia – 220 Volt – need a converter/inverter? Other Features ? Panorama Mode – ability to link pictures together to create a seamless image: Up to 10 frames stitchable with CAMEDIA Master software when using Olympus brand xDPicture Card ? Sequence 1 frames per second, more than 4 frames in HQ mode. Other Features cont’d ? For 16 mb card. HQ Movie: 320 x 240 15 fps: 16 sec. max per movie SQ Movie: 160 x 120 15 fps: 40 sec. max per movie – Stylus 300 – no sound however. ? Flash Variation – Timed, red eye, nighttime, low light Other Features cont’d ? Viewing – RCA video out? ? USB file transfer ? Date/Time stamp ? Image Preview – use power, use viewfinder if possible WebCams ? Cheap $50 ? USB – Universal Serial Bus ? Sometimes include a microphone ? Lower Resolution ? Good for video co
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