Binoculars are listed by size spec, where the first number is magnification and the second is objective lens diameter.

The LH19 3.0 is the compact all-rounder for close to mid-range work. Its 19mm f/1.0 lens delivers 1.9× base magnification and ...

Unistellar is offering 20% off across its entire range of smart telescopes and accessories for the whole month of November, ahead of Black Friday on Nov. 28.

The Canon EOS R50 offers a 24.2MP sensor, DIGIC X processor, and fast Dual Pixel CMOS AF II (autofocus). It captures oversampled 4K 30p video with no crop and shoots up to 15fps (frames per second).

Abstract: Rescue work after a coal mine accident is fraught with challenges and dangers. Considering the safety of rescue workers and the urgency of a rescue mission, it is necessary to use coal mine ...

White Balancing Auto, Incandescent, Fluorescent 7 Types, Direct Sunlight, Flash, Cloudy, Shade, Preset Manual, All Except Preset Manual with Fine Tuning Other Focus Features AF-area Mode Single Point ...

White Balancing Auto hybrid control with image sensor and 420-segment RGB sensor 12 manual modes, preset manual, fine tuning ...