Get a RAB unit. They wont false trigger all night like those cheap hardware store brands. They cost more but worth it. I have a few been running good for 10+ years with out needing adjustment.
Zooz Outdoor seems to work well I have 12 or so of them. I get around 120 degrees left to right. Up and down has never been a problem and I get around 45 feet radius on the most sensitive setting. I also like them because I can plug them in. Micro USB no more batteries unless you want to use them.
RAB Stealth 360 is my go-to outdoor sensor when I don't need it to report back to the hub.
Not sure what you have in mind with brightness increase/decrease. First thing that comes to mind is the units that are dim until motion is detected. Second thing that comes to mind is selectable brightness - a feature on some RAB LED lights (manually set brightness and color temperature). A bit more info of how it should behave will help here.
Thanks. I'll definitely check this out. I mentioned dimmer or levels of brightness only because in some houses I see flood lights such are too bright and blinding. The light is bright enough to flood a large part of street. I don't need that bright light.
I have one of these over my garage (along with the Stealth 360 sensor):
They are surprisingly affordable for a professional, buy-once solution. They have a tool to estimate the light spread, also, based on height and tilt angle.