When you enable it during night cycle and everything turns orange instantly, it feels quite jarring. But your eyes naturally adapt to the changed white-balance and you won't notice it nearly as much after a while.
FWIW I prefer SunsetScreen, because it has more options.
SunsetScreen is superior to flux, it's much more configurable and has a better UI. You can choose the times individually without having to fuck with timezones, and you can have a transition phase instead of just toggling the filter on.
As the author of a popular program dedicated to reducing blue on our screens, I doubt that intensity of light would make much difference to be honest, especially if it's the periphery of your vision.
It works after sun goes down. You can right-click and "disable for one hour" to see the difference once it's in full swing.
If you want the same effect but want to adjust the hours yourself instead of waiting for the sun go down use this instead of f.lux: http://www.skytopia.com/software/sunsetscreen/
A lot of people use f.lux to filter out bluelight during nighttime so you don't strain your eyes looking at your monitor for many hours while it's dark. F.lux decides when to filter out bluelight automatically based on dusk/dawn times in your location. For a lot of people, this is a great feature. Personally, I want to be able to set on and off times myself, so I use SunsetScreen.
EDIT: Also, a lot of people are obviously recommending Steam. Steam is good and all, but if a game is also available on gog, get it there. It'll be guaranteed DRM-free and you'll be supporting a great company.
True, in the meantime download something like SunsetScreen and make sure you have a blue-light filter going on your phone as well, and never watch anything in the dark but have a light shining on the monitor at all times at minimum whenever using it.
I wouldn't recommend F.Lux. Their transition time can lag your computer badly, plus it doesn't let you set your hours exactly for when you want it to transition.
Also in Windows 10 if you have the creator's update, you can set it yourself through your Display Settings, called Night Light
I've used that for a while but hated the transition period taking 20s and slowing my computer down. Like when waking my surface up, it would transition and I'd have to wait to be able to use it (touchscreen was fairly unresponsive during the transition period). Also it doesnt let you customize the sunrise/set time. I switched to Sunset screen and its better. You can have it switch instantly and tell it what times to transition.
F.lux, even v4, still has a bit of a performance impact, I believe (I could be wrong, though). So use either Windows' Night Light or SunsetScreen.
I recommend SunsetScreen for now, especially for the scheduled brightness control. This does not directly control the monitor backlight's brightness (per DDC/CI), but simply lays a black filter on top to the strength of your choosing. I've tried tools like ClickMonitorDDC and I still find the overlay filter solution more elegant.
A feature like that would be a great addition to the Night Light, just to have a complete feature set for the OS itself. That, along with a transition phase setting, would be perfect. Maybe even have a separate schedule configuration for the black filter. I would add all this to the Feedback Hub, but I'm only using a local account. If somebody else were to do this, I'd really appreciate it. Perchance either /u/jenmsft or /u/its_fundamental could pass these ideas along, too.
I prefer SunsetScreen because it's more customizable. You can increase or decrease the amount of blue, and also change your screen's brightness. F.lux is too orange for me and makes it hard to read the screen, so I decrease the orange a little but also lower the brightness. I also change the timing and expand the darkness so I'm not blinded in the morning when I first use the computer, even though it may technically be past sunrise.
Totally free: http://www.skytopia.com/software/sunsetscreen/
An alternative to f.lux is SunsetScreen which have more options in color shift for people like me who just want a dimmer screen without changing the colors.
Alternatively if you're on Windows 10 you can use the built in Night Light feature.
There's also SunsetScreen, which was designed specifically to fix certain problems with f.lux.
Not a bad list but I'd go with SunsetScreen over f.lux
I would also recommend people try SunsetScreen. It allows for slightly more customisable options and is a good alternative if f.lux causes performance issues on your machine.
I ditched f.lux for SunSetScreen because of performance issues, so either do what OP said or switch... cause that comfy color temperature is a must for late night (or even pushing early morning) sessions :)
Monitor's so bright! If you do a lot of late typing, you might want to consider software that will adjust the brightness and temperature of your screen during the evening so you don't get so much blue before bed.
I use http://www.skytopia.com/software/sunsetscreen/ and it's 100% free, no ads, no nags.
Brightness 25, Contrast 60, Colors 100/100/96.
Default settings are way too high for almost all conditions/people. Turn your brightness and contrast down as low as you can while still being able to distinguish between nearly-identical shades.
F.lux (or SunsetScreen, my choice) are also good to use.
Yeah I doubt we'd be able to get that strength of cyan even if we could precisely produce a single perfect wavelength. If that's true, we'd need direct control of the pathways/cones in the eyes to experience a perfect cyan quale outside of that optical illusion I made.
Colour changing light bulbs Flux style would be fantastic! If it can support up to an incredibly bright 2500 lux 6000K during the day to help especially during the winter to produce seratonin (thus lifting spirits and to help with SAD etc.), and a dim 10-50 lux orange light (more red than 2700K!) during the night to wind down, then even better. See my post here which you may find interesting.
Coincidence number two: I've just finished version one of a Flux-like program called SunsetScreen. It's better than F.lux because you can set the exact colours and times for both the sunset and sunrise. I think this is a better approach than basing the colour changes on the real sunset/sunrise times (which during the winter in many places would make a very short day, and therefore at odds with the natural sleep/wake rhythm!).