Читать книгу Collins Complete Photography Manual - Collins Dictionaries - Страница 24

Part of this potential comes from the fact that you can use different lenses. Digital SLRs are often supplied with a ‘kit’ lens which covers a useful everyday zoom range from wide-angle to medium telephoto. However, additionally you can acquire ultra-wide-angle lenses and longer telephoto lenses in order to extend the range of subjects and conditions that you can work with.

Some camera makers offer ‘twin lens kits’. In this case, you get a general purpose zoom and a telephoto zoom. These can represent very good value.

SLR makers also supply external flashguns which can be attached to the camera’s accessory shoe and which provide more powerful and more versatile lighting than the built-in flashgun. Manufacturers’ SLR ‘systems’ include not just lenses and flashguns, but also remote controls, battery grips, underwater housings and more.

One further advantage of digital SLRs is that they enable you to shoot ‘RAW files as well as conventional JPEG images. RAW files contain the data captured by the sensor and have not been processed into images by the camera. You carry out the RAW file processing (conversion) on your computer later on. RAW files are like ‘digital negatives’ – they contain extra image data which can often be used to produce superior pictures.