An f/2.8 at the end of a 70-200mm zoom lens is too shallow when filming a speaker at a podium as the subject will go out of focus with every to-and-fro motion, but f/4.0-5.6 is more forgiving and still results in a defocused background. Video producers know that in live video production environments they have less control of pretty much everything, and there are no additional takes, so there are limits to how shallow a depth of field you want. This background blur also is very web codec-friendly a defocused background has less bit-rate hogging detail so more bits can be allocated to the important in-focus areas of the image.

Webcasters appreciate the shallow depth of field as well as it brings focus away from a potentially bland or distracting background and onto the subject. The benefits of a single large-sensor video acquisition in cinematography circles is that a large sensor allows for an image with a shallow depth of field and a pleasing defocused background blur, known as bokeh. When videographers started using DSLR cameras like the Canon 5DMKII to record video, a whole new trend of large-sensor video acquisition was started. Prices for POV and PTZ cameras range from $300 for the popular GoPro Hero2 to more than $5,000 for high-end PTZ models. These cameras are generally used without an operator, although PTZ cameras can be operated remotely. Pan-Tilt-Zoom (PTZ) Closed Circuit TV and Point of View (POV) video cameras are generally less expensive compared to camcorders and ENG video cameras but they lack manual controls and can have very small sensors. Panasonic AW-HE50SN HD Integrated PTZ Camera Smaller sensors and fixed lenses mean lower cost, and a professional camcorder typically costs between $4,000-8,000. Camcorders have servo lenses so you can zoom with a zoom rocker or on the lens barrel.

They typically have smaller 1/4', 1/3', or 1/2' sensors and come with a fixed video lens that requires lens adapters if you require wider or more telephoto then the lens allows. Camcorders are generally smaller video cameras that can be handheld or tripod mounted but not shoulder mounted without a shoulder-mount rig.

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