About flashlight and night vision, I would advise to read further on the website of the official manufacturer. http://www.atncorp.com Where they are separated by generations and species. The site is constantly updated so I think you will find everything that you are interested.
are you still meaning game cameras? they have 2 kinds. One has a flash like a camera and can be seen. The other uses infrared emitters and the flash can not be seen but the camera can be found in the dark cause the diodes that emit the infrared light look like little red lights at night,