All pictures were likely taken within a minute or so of one another --- as they all say 15 hours.
This is correct.
But since the Gerber and the E01 both look as if they are getting dimmer with each picture --- in reality -- I'm guessing your camera was set for AE (auto exposure). That is -- either auto aperture, or auto shutter speed, or both were on.
Also correct.
And as you changed the Revo from 2.7 to 20 to 80 lumens -- this caused your aperture to get smaller, &/or the shutter speed to get faster -- hence the Gerber and E01 APPEARED to get dimmer with each successive picture
Correct
--- where in reality, the Gerber and E01 were the same brightness when each picture was taken. Right ?
Not so much.
If you look at the first picture, where the ReVo is down at 2.7lm (or so), the Infinity was at about the same level at that point as it. I should have taken some pictures at the start, but in short, the Infinity starts off as bright as the E01, then seemed to fall down to about a 3 lm - 4 lm level by 15 hours. Any way... As the ReVo is ramped up it begins to over power the other two lights. So in Picture one the E01 is the most powerful, then in the second picture you can see that the ReVo has over taken the Infinity and E01 in power. By the third picture the Infinity and E01 are destroyed.
From the 15 hour mark onwards the Infinity just dims down. On alkaline batteries the drop off from full bright to nothing is rather quick, whereas I found that the Eneloop battery prolonged the drawing down stage. By 20 hours though, the light provided would only really be good enough for the most dark adapted eyes.
The Infinity is a great light, and I have been using them for many years (I was buying Infinities when they were made by CMG ten years ago), but I think that the E01 is a superior light in every way. Technology has made it so that for the same runtime you get a light that is half the price, has fewer parts to go wrong, and is smaller (AA vs AAA). The E01's advantage is that it is about as BULLETPROOF as the CMG version, and you can take any "
dead" alkaline, put it in, and know that that the E01 will fire up with enough light to do whatever it is you need to do. Since discovering the E01 I have replaced all of my Infinities (although they have a fond place in my heart) with the E01.
Hope this helps.