Oooooh, I'll definitely try to do it this way, I always set the egg ON the flashlight, and you've got it balanced OVER the light, and see what a difference it makes. I already use the other tips offered in the video (in a dark room, I do this at night and in the dark).
Your video makes perfect sense and THANK YOU so much for spending the time to educate me! I truly appreciate it!
All of my eggs look like the one you are using when I put them into the incubator, only getting darker inside after they've been in there several days. I candle my Japanese coturnix quail eggs on day 1 (before setting to look for cracks and other defects), day 9 (split into 3 batches, infertile eggs removed (those that look like the one you showed in your video), definitely fertile and growing (mostly dark inside), and the third split is my unofficially named 'dubious' section of the incubator), and final candling at lock down day (day 15) of all eggs that were in 'dubious' section.