Causes of Warts. Skin warts are caused by a virus known as human papilloma virus (HPV). There are over 100 sub-types of this virus but only a few infect humans to cause warts on the skin. The virus enters the skin cells and replicated like all viruses do but does not extend beyond the skin.
With top speed full resolution shooting at between 4.5 and 6.5 fps (frames per second) these cameras are not going to be ideal sports shooters (that's where full frame DSLRs like the Nikon D4S and Canon 1D X come into their own).
2.2) Continuous/AI Servo Focus Mode. Another focus mode that is available on all modern DSLRs is called âContinuous/AF-Câ (Nikon) or âAI Servoâ (Canon). This mode is used for tracking moving subjects and it is a must for shooting sports, wildlife and other non-stationary subjects.