content: If you own one of the fantastic, compact Canon digital cameras than this is a must have.I bought a new Canon SD880IS for Christmas and the built in flash only has a usable range of about 10-13 feet. This is very typical of compact digital cameras. This is due to the small size of the cameras and small batteries. It is all a compromise. For most shooting this is not a problem as you can usually shoot without flash or are within range. However many times you need more flash range when shooting in large rooms, museums, concerts, and public places. The HF-DC1 solves this problem by giving you more range - up to 30 feet. This flash works with many Canon models, check the Canon Website or your camera owners manual for complete details.It is a must have for Canon digital camera owners. Highly recommended !