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2010 2011 BMW 5 Series Forum F10 BMW 5-Series (F10) Forums General 5-Series Sedan and Wagon (F10 / F11) Forum LED Headlights -possible you create sharper cut-off?
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      02-20-2020, 01:14 PM   #1
ramman434
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LED Headlights -possible you create sharper cut-off?

I have no idea if there's a way to adjust this, but does anyone know of a way to create a sharper cut-off on the F10's LED headlights? Mine seem pretty fuzzy at the cut-off.

My old Lexus has a sharper cut-off on its HIDs and my wife's '19 CX-5 LEDs have a sharper cut-off and honestly appear even brighter than mine.

Let me know your thoughts. Attached pic is my cut-off straight on the garage (angled up the driveway from me) and the 2nd pic is as I'm turning left, with it hitting the garage (you can also see my fog light cut-off line below.
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      02-21-2020, 09:15 AM   #2
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I see the same on my LED headlights. I'm interested as well.
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      02-21-2020, 10:07 AM   #3
ramman434
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Glad I'm not the only one! Output is great, but I've always been a huge fan of sharp cut-offs, like back with the S2000's headlights, or when people were using washers on their Acura TSX projector retro-fits to get that beautiful sharp cut-off.

S2000 HID Projector Cut-off for Reference (which looks exactly like my wife's Mazda's LED projector cut-off):





**Maybe it's because our LEDs don't use an actual "projector" housing??**
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      03-05-2020, 12:18 PM   #4
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Still just trying to see if anyone has ideas...
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      03-06-2020, 10:34 PM   #5
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From the pictures I would say that the BMW lights are typical for the US market. The USDoT requires that there is a certain degree of upward scatter to illuminate overhead reflective signs. Those of us with two brain cells to rub together call this glare. I know this for sure because a bunch of Buicks were recalled some years ago for lacking this "feature".

At least the BMW lights are white throughout their pattern. Although the S2000 pattern looks sharp at first sight, I'm not a fan of the blue fringing in the S2000 picture. Have the bulbs been changed for some weird color temperature?
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      03-07-2020, 12:01 PM   #6
ramman434
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Quote:
Originally Posted by agentorange View Post
From the pictures I would say that the BMW lights are typical for the US market. The USDoT requires that there is a certain degree of upward scatter to illuminate overhead reflective signs. Those of us with two brain cells to rub together call this glare. I know this for sure because a bunch of Buicks were recalled some years ago for lacking this "feature".

At least the BMW lights are white throughout their pattern. Although the S2000 pattern looks sharp at first sight, I'm not a fan of the blue fringing in the S2000 picture. Have the bulbs been changed for some weird color temperature?
Quote:
Originally Posted by agentorange View Post
From the pictures I would say that the BMW lights are typical for the US market. The USDoT requires that there is a certain degree of upward scatter to illuminate overhead reflective signs. Those of us with two brain cells to rub together call this glare. I know this for sure because a bunch of Buicks were recalled some years ago for lacking this "feature".

At least the BMW lights are white throughout their pattern. Although the S2000 pattern looks sharp at first sight, I'm not a fan of the blue fringing in the S2000 picture. Have the bulbs been changed for some weird color temperature?
No, what you're seeing is the bend of light (light spectrum) causing that blue tinge at the cut off, which is stock on those projectors and lenses
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      03-18-2020, 10:49 PM   #7
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Well, it seems that BMW went out of their way to make a headlight that avoided the blue fringing that many oncoming drivers find annoying.
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      03-23-2020, 01:11 PM   #8
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Quote:
Originally Posted by agentorange View Post
Well, it seems that BMW went out of their way to make a headlight that avoided the blue fringing that many oncoming drivers find annoying.

Oncoming drivers will still get that blue fringe when facing a car with HIDs. That comes from light bending around the metal shield used behind the lens to form the cutoff. I believe that you even still see that bend of the light on the LEDs. There are tons of threads on this on forums such as HIDPlanet.
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