You can depend solely on the built-in flash of your handy Canon digital camera to capture a subject in pitch-dark environments. On a camping trip, or in the city at night where your only light source may be the moon or a streetlight, a very powerful external flash can help you capture priceless pictures.
This is why Canon developed the HF-DC1 High-Power Flash, which operates wirelessly and is compatible with nearly the entire lineup of Canon Digital Cameras. This compact yet high-powered slave flash unit has a guide number of almost 60 feet. All this means you’ll enjoy night photography even more!
Automobiles are more like computers on wheels these days and the technology you find underneath the hood now bears little resemblance to the mechanical technology that moved our cars in the last century. Gone are the carburetors that mixed the air and fuel, the distributors and rotors that managed the electrical impulses to fire the spark plugs are virtually nonexistent. 
