How quick is the warm up time for the full brightness ?
1815133
It takes about ten to fifteen seconds (tops) to warm up for full brightness.
1229478
No. Although you get some light immediately, they take about 2 minutes to get to full brightness.
1168989
Yes, you have off, 3 levels of brightness and a cycle mode which goes basically over the course of several seconds goes from bright to dark and back to bright. A cool party trick, not so much useful in actual use. Basically you have 5 levels to go through, including off. I don't recommend off though, the dimmest setting suffices if you are contemplating night use. There is no bleeding of light from under the keys so it is not distracting. Even the medium level isn't too bad, though it is definitely brighter. The brightest mode is VERY bright, but not blindingly so. The LED's are very even and make it seem like the letters are floating :) I use my keyboard mainly in low-light, by the way. -edit- No problems entering BIOS.
112908
The light dims over 30 minutes from ordinary full spectrum to off. I find the light more effective as a study light than a dawn/dusk simulator. The light is not as bright as other dawn/dusk simulators.
1827350
In my opinion, yes. This was the main reason I switched, immediate light, no flickering or warming up.
816266
New CFLs turn on within a second with no noticeable warm-up period. Rest at times it depends on the ambient temperature. In my case, it achieve its full brightness in almost no time.
1168956
It depends on the level of darkness. It is fairly quick anyway. It has a feature that allows you to check the progress and a feature that allows for a little more time. As with any new appliance you need to get used to it.
725675
It only allows 2 options. Either 100% light at on time and instant darkness at off time. Or the ramp up feature, 15 minutes to reach full on and 15 to reach full off. Like a sunrise and sunset. Much more natural. But that is all you can so with it gangsta.
1709112
There is no perceptible delay as far as I could tell. I run LEDs in my setup, and it seems instant. It seems to me that the light comes on just as fast with the unit in line as it would without.
1193575
4/5 hours if you use power saver mode, or low brightness. Its a little on the short side bc of the touch screen.
2145207
Display mode: User Brightness: 0 Contrast: 0 Sharpness: 9 (not 8) Gamma: Film BrilliantColor: 1 Color temp: Warm Color settings: everything at 0, except White White: Blue 0, Red -11, Green -8 @ 300 hours lamp
866448
Lumins don't seem to mean much as far as brightness. I finally went by colortemp. Higher the temp the brighter. I just used a dimmer.
1842926
I've tried but don't notice much if any of a startup delay. I'd say they are at nearly 90% brightness instantly.
512938
I can't give you a direct answer. It depends on what brightness setting and size dot setting, but I shot all past season on one battery; 12 matches, about 4 hours long each time, plus practice sessions, about another 8 4-hour sessions and still going brightly... I try to turn it off between rounds but don't always remember.
2249948
If I remember correctly it is about 2.5 - 3 hours of runtime at 4k using the LED screen. It should be longer if you use the viewfinder.
1373861
Turn it all the way up to 5 and wait until the light goes off... It's about 10 to 12 minutes.
2260445
I would say it is close to the same brightness. Its not blinding if that helps.