Читать книгу Collins Complete Photography Manual - Collins Dictionaries - Страница 49

In the early days of inkjet photo prints, rapid fadingof images was a problem. Manufacturers have invested heavily in research, and most now quote a print life expectancy in decades or ‘generations’. The important thing to note, however, is that manufacturers have not yet agreed on a standard set of test conditions and, obviously, they rely on ‘accelerated aging’ processes to estimate print deterioration.

Nevertheless, prints do now last much longerthan they used to, and quite probably as long as traditional photographic prints kept in the same conditions. However, it is essential to use the printer makers’ own papers and inks, because these have been specially tuned and matched to provide this longevity.

Storage

When you take a digital photo it is stored by the camera on a memory card. Memory cards have limited capacity and are best treated as purely temporary storage until you have the opportunity to transfer the photos to your computer.

The hard disk inside a computer has a much higher capacity and is perfectly suited to long-term storage of your growing photo collection. A 256Mb memory card may store around 100 good quality photos, but an 80Gb hard disk, which is quite modest by today’s standards, could store as many as 30,000.

These figures assume that each photograph takes up around 2.5Mb of space. This is a typical size for photos taken in the commonly used JPEG format. However, if you own a digital SLR and prefer to shoot RAW files, the file sizes will be much larger – anywhere from 5-25Mb, depending on the camera model. Edited versions of your files may also take up a lot more space than the original JPEG photos.