I currently use 4 of these Soft White LED Night Chaser flood light bulbs on two flood light fixtures at the rear of my house controlled by one switch. I don't use a dimmer but I do know that these bulbs are compatible with the wired Intermatic brand timer I now have after switching out with the old manual switch. Also if your interested in this built in timer in place of a manual switch or dimmer, you may want to also consider this option. I ordered four of the Intermatic brand built in timers from Home Depot about three years ago for about $35.00 each to use for all of my exterior light fixtures. These timers have a built in time/function display and can be programmed to come on and off at different and multiple times per day or just programmed to come on at dusk and go of at dawn with the day light savings time feature built in and you can also override the programing any time by manually using the push button tab under the display. These timers also come with a battery that has lasted me over 3 years so far, the purpose of the battery is for the display and programming so if you have any power outages you won't have to worry about resetting the clock or programming. I just wanted to also mention these timers because I have mine set to come on at dusk and go off at dawn and I love them, you can program them and not have to worry about turning your exterior light fixtures on or off again.
Please check with your local store on fixture recommendations.
GE makes these in 40, 25 and 15 degrees. HD only sells 40. I have 15 degrees bulbs pointing out to the fields behind my house, does an excellent job 300-400 feet out can see deer. I found them at a couple online places. Highly recommend, I have 4 going all night for 2 years, I failures yet.