Phillips 5000K ultinon installed:sad:
#19
Hence, for best driving lighting condition, 4300k is best? I was reading a while back, OEM's use 4300K, is it because it gives the best lighting for driving(stimulates daylight?)
#21
Pole Position
iTrader: (10)
I thought HID would have better color rendition. I'm not too sure but maybe you would know. Does HID's naturally flicker like a filament bulb?
#22
yeah the 5000K Philips Ultinon output is look exactly like the new RX350 d4s, it look a little brighter than my original d4s came with the car, but 5000K philips ultinon and the newer rx d4s has the same color output, it very hard to capture the light from my iphone, but in person it look more yellow not white like seen in the pics that I posted spent $270 on these 5000K is a waste I wish I've bought the 6000K ultinon instead.
#25
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Also filament bulbs have a tendency not to flicker. Unless you mean to refer to the flickering problem some people have with HID lamps. This is caused by a problem between the ballast driving the lamp and/or the lamp itself and/or the lamp's environment (e.g. too cold). HID light is emitted from an arc inside the lamp which follows the contour of the top of the quartz glass containing the arc - it looks like an upside down smile because of this. When conditions are unstable, the arc will start to skip around and even start to rotate inside the quarts like a jump rope. Put this into a projector lamp and you get flickering. Unfortunately it's hard to say what exactly is causing flickering without measuring a bunch of crap but I would lean towards blaming the bulb in most cases because I believe ballast waveforms are pretty standardized while bulb composition can easily be compromised due to careless manufacturing.
sorry y'all I meant to not write a lot of off topic stuff. Hope you don't mind - back on topic.
#27
Pole Position
iTrader: (10)
Well, in a nutshell color rendition is better when the light output's emission spectrum is similar to sunlight and halogen better approximates sunlight's spectrum. Halogen light is thermionic emission (heat excites electrons until emission) so you get a smattering of light @ a lot of different wavelengths. HID and other arc/gaseous type lamps light via plasma emission where the major contributors to light output are at specific wavelengths which are characteristic of the elements inside the lamp. Loosely/conceptually, HID lamps blend a handful of specific colors to get "white" and halogen blends basically all visible colors to get "white". Thus halogen is more similar to sunlight & has better color rendition. This is also why fluorescent lighting in your home is so sucky vs incandescent.
Also filament bulbs have a tendency not to flicker. Unless you mean to refer to the flickering problem some people have with HID lamps. This is caused by a problem between the ballast driving the lamp and/or the lamp itself and/or the lamp's environment (e.g. too cold). HID light is emitted from an arc inside the lamp which follows the contour of the top of the quartz glass containing the arc - it looks like an upside down smile because of this. When conditions are unstable, the arc will start to skip around and even start to rotate inside the quarts like a jump rope. Put this into a projector lamp and you get flickering. Unfortunately it's hard to say what exactly is causing flickering without measuring a bunch of crap but I would lean towards blaming the bulb in most cases because I believe ballast waveforms are pretty standardized while bulb composition can easily be compromised due to careless manufacturing.
sorry y'all I meant to not write a lot of off topic stuff. Hope you don't mind - back on topic.
Also filament bulbs have a tendency not to flicker. Unless you mean to refer to the flickering problem some people have with HID lamps. This is caused by a problem between the ballast driving the lamp and/or the lamp itself and/or the lamp's environment (e.g. too cold). HID light is emitted from an arc inside the lamp which follows the contour of the top of the quartz glass containing the arc - it looks like an upside down smile because of this. When conditions are unstable, the arc will start to skip around and even start to rotate inside the quarts like a jump rope. Put this into a projector lamp and you get flickering. Unfortunately it's hard to say what exactly is causing flickering without measuring a bunch of crap but I would lean towards blaming the bulb in most cases because I believe ballast waveforms are pretty standardized while bulb composition can easily be compromised due to careless manufacturing.
sorry y'all I meant to not write a lot of off topic stuff. Hope you don't mind - back on topic.
I did not quite notice this with HID unless it does.
#29
Lexus Test Driver
iTrader: (10)
No, you don't have to take out the airbox and washing fluid tube. That's just to access the back of the headlight to change bulbs and stuff. You do need to drop the bumper though. There are 3 bolts and a clip that holds the headlight in place. There's a thread somewhere that goes into more detail, which is what I used.
#30
To take the headlights out, you have to remove the screw on the side of the bumper and fender off and pull the bumper toward the front of the car to able to get the bumper freely of the headlight bracket under the headlight and unscrew three screws ( two up and one side) and the wire harness on the side too
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