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How bright is T-100 Tritium?

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I just got my hands on a DeepBlue Daynight Mil T100 which uses flat T-100 tubes. Link is here: https://www.deepbluewatches.com/dat1opstrflt39.html
I am not sure if this watch is a typical of how bright T-100 would be or not? Or is it better than average or worse than average. Do you have any experience with that?
What I am seeing with this particular watch is that it's brightness level is like this: Shine bright light on your dive watch that has good lume (e.g. a Seiko) to fully charge it. Then let it stand for 15 mins. That is the level of brightness I am getting with this specific watch. So would you say that is typical or above average or below average?
thanks!
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WatchDoctor
847
Nov 6, 2018
Just to have a frame of reference, I compared the Tritium with an Alpina Seastrong Diver. I fully charged the Alpina, then took pictures at T0, T+15min, and T+30min. The pictures were taken in complete dark room. I’ve adjusted the pictures to represent what you’d see with naked eye. Here you go:
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Cloaca
1906
Nov 3, 2018
I really wonder about this too. Specifically, I don't want a watch with lume that is too bright. My Orient M-Force dive watch lights up anything it's pointing at like a dim flashlight, but fades down reasonably quickly to a readable but not pyrotechnic level. I just need to see the watch hands and the indices, not light up the room. I want to be able to wear a watch in the theater or a classical concert hall without annoying people. Stuff can be too bright. In general, these days any top-end outdoors headlamp is too bright for the mountains or back country. Same with LED camp lanterns. You kill your night vision. All you need is clear sky full moon equivalent, or maybe one notch brighter than that. With T-25 vs T-100, the problem is also that you can get a lot of relatively inexpensive T-25 watches from China on Amazon, but T-100 watches tend to be on mid-priced Swiss watches, so if you spend the money on T-100 and it is too bright, it's too late. My guess is that T-100 is about two photographic aperture stops brighter than T-25, given the relationship of the numbers, like F1.4 vs. F-4, since the eye's visual system has a logarithmic relationship with the physical world of light. That would be a 2-zone difference in Ansel Adams black-and-white zone system, definitely noticeable, but not that massive.
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