If you want to make beeps, go into setting and taking photos with your system of beeps fully audible.
BACK FOCUS
It seems DSLR cameras are set up by their manufacturers so shutter button handles both the focusing part.
FOCUSING MODES
This relates to how the autofocus system works. You may have the experience of turning on a DSLR.
VERSATILE LENS
Versatile Camera Lenses for Travel Photographers. I believe that a lens is more important than the camera.
4K VIDEO
4K resolution, also called 4K, refers to a horizontal display resolution of approximately 4,000 pixels. Cinematography use 4K resolutions.
EFFECTIVE PIXELS
Effective pixels are the pixels that capture the image data. A 12 megapixel camera has an almost equal number of effective pixels.