Nikon D7500 20.9MP DX-Format DSLR + AF-S 18-140mm f/3.5-5.6G ED VR Lens

Megapixels: 20.9 Optical zoom: 7.8x When recording in 4K UHD the camera uses a movie image format that produces a 1.5x increase in the lens’ effective focal length; this image area is reserved for 4K 3840 x 2160 recording. Choosing the 1.3x-based movie image area applies a 1.3x crop of the DX sensor and is used for Full HD and HD video capture. The DX-based movie image format makes use of the full width of the DX-format sensor and is employed for Full HD 1920 x 1080 and HD 1280 x 720 video. This option provides the widest field of view and is well-suited when you want shallower depth-of-field effects.