Complex sentence: QuickTake cameras cannot be directly connected to Macintoshes running Mac OS X as these machines do not support the old Apple Serial protocol, but image files in the QTK format can still be decoded on modern operating systems using the open source program dcraw.
Split into simpler sentences: QuickTake cameras cannot be directly connected to Macintoshes running Mac OS X as these machines do not support the old Apple Serial protocol. However, although images downloaded from QuickTake cameras required a unique codec never ported to current versions of QuickTime, the raw files can still be decoded on modern operating systems using the open source program dcraw.