General > General Technical Chat
Sign of the times
james_s:
It's funny to hear about nostalgia for high pressure sodium, I guess it's younger folks who don't remember the nice clean white light we had before those awful orange things replaced everything in the name of energy efficiency. Now we're back to nice clean white light, in the name of even better energy efficiency. I hated HPS when they initially took over and I don't miss them one bit now that they're going away.
They will change the light sources in particular scenes for filming movies, I remember seeing color correcting gels wrapped around streetlights in Los Angeles a few times when I was there, left over from filming scenes. If a director wants to capture the HPS look digitally filtering the footage is now an option too.
bd139:
Oh holy crap this one annoyed me. They replaced all our gentle orange sodium lights with LEDs a few years back. I had to change the curtains in the end for blackout ones because it’s like having prison arc searchlights chasing you at night otherwise.
But a year down the line I don’t even notice any more :-//
Gyro:
One of my earlier memories is lying on the back seat of an Austin A30, feeling horribly travel sick, watching the orange low pressure Sodium lamps drift by. >:D
Rick Law:
--- Quote from: dunkemhigh on May 14, 2021, 11:31:08 am ---boring olde phartes?
--- End quote ---
--- Quote from: james_s on May 14, 2021, 07:30:12 pm ---It's funny to hear about nostalgia for high pressure sodium, I guess it's younger folks who don't remember the nice clean white light we had before those awful orange things replaced everything in the name of energy efficiency.
...
...
--- End quote ---
I recall reading an article that highway/street lights in white is easier for older people to see. I can't find that article anymore.
But, it makes sense -- white comprises of the entire visible color spectrum. Anyone with decreased sensitivity to any particular color can have the rest of the color spectrum to rely on.
The most common color blindness is red-green (8% of male, 0.5% female for Northern European descent according to Wikipedia), next to that is blue-yellow. Yellow, orange, amber are colors are a mix of red and green, so it is unfriendly to decreased sensitivity to red-green. The traffic light colors are even less friendly to them, yet red-green insensitivity appears to be the most common.
It may not make any difference to most of us, but I guess only until someone runs over your dog because the street is lid with yellowish lamps.
bd139:
--- Quote from: Gyro on May 14, 2021, 08:28:04 pm ---One of my earlier memories is lying on the back seat of an Austin A30, feeling horribly travel sick, watching the orange low pressure Sodium lamps drift by. >:D
--- End quote ---
Reading that instantly triggered a similar memory here. Drifting off watching the old green but slightly blue traffic lights pass by from the back of my father’s Ford cortina that smelled of vomit after my sister had eaten too many fruit pastels and let them go :palm:
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