Has anyone bought it? ls the effect much better?
GOPRO 5, 6, 7 Lens 4K 1/1.8” 12MM, M12 X 0.35
I have it. The primary reason I went with it is it allows more light to the sensor. With these scope cam videos, light is the key to quality. Especially if you want to shoot 240 fps to show your projectiles in flight. The 1.8 and 2.3 specifications on the lenses refer to the respective lens aperture, or f-stop value. It specifies the amount of light the lens passes. 1 full f-stop increase or decrease in light passed doubles or halves the amount of light passed. Said differently, if you increased the light by 1 full stop, you double the light that gets through the lens. When going from the cheaper 2.3 lens to the more expensive 1.8 lens, you are increasing the light (the lower f-stop number passes more light) by a little less than 1 full f-stop, so you are passing almost, but not quite, two-times the light to the sensor. The practical results of this are roughly this... if you have just enough light to shoot 240 fps with the 1.8 lens and get a decent quality video, the 2.3 lens would only pass enough light to shoot video at 120 fps to get the same quality video.
It's not a terrible difference, but it was a small increase in price to me to have better quality video for the life of the scope cam system. All parts of the optical system of a scope cam decrease the amount of light ultimately hitting the camera sensor (the scope optics, the beam-splitter that reflects light to the camera, and the camera lens), by choosing the 1.8 lens over the 2.3 lens, you add a little of the light back.
Another benefit is, generally speaking (VERY generally speaking... take it with a grain of salt), it takes a better lens to pass more light. One can assume it would produce a slightly better image when it comes to sharpness. However, at these prices, that may not really be a valid assumption.
I just got mine set up, and will be posting some videos soon. So far, I'm happy with it.
Hope this helps.
Chuck
