The quality of a video which was shot by using infrared illumination is not same than quality of a video shot under sun light, but it still can be very good and surely is very helpful. Without this kind of systems, recording at night can be a very difficult or expensive task to achieve.

Recording at night or under complete darkness conditions could involve use of very powerful light sources which can be bought for this activity in particular. Using these artificial light sources implies some difficulties such as having to carry them and being careful with them since they can brake easily, but video shot by using them can be of a high quality when they are properly used.

Digital zooming can be evaluated depending on optical zoom level. According to optical zoom a digital camera has, zooming in with it would allow you to have a good or a not so good image resolution and quality. The more powerful an optical zoom is, less resolution you would loose. This way, if you wish to acquire a digital camera which would allow you to zoom in by loosing less amount of quality possible you should pay attention to its optical zoom more than to digital zoom itself.

Digital zoom numbers do not really tell much of a digital camera zooming quality. Actually, digital zooming has no limit; it is possible to create digital cameras which offer a digital zooming as powerful as they wish. The digital camera feature which allows us to measure its zooming quality is optical zoom, and it is recommendable to pay attention to that characteristic rather than to digital zoom numbers before acquiring a new digital camera.