Jump to content


Photo

Practical LED bulbs


  • Please log in to reply
8 replies to this topic

#1 Toby Gorman

Toby Gorman
  • Basic Members
  • PipPip
  • 13 posts
  • Cinematographer

Posted 11 August 2017 - 01:14 PM

Hi all,

Im wondering if any of you have started using any high cri dimmable LED bulbs in practicals yet.

It's an age old problem I have been wanting to solve for for a long time - in an ideal world I'm looking for a 4000k ish dimmable led bulb for practical lamps (Edison sockets). Colour adjustable between tungsten / daylight would be a bonus.

I'm shooting a Christmas movie and want to mix daylight through windows at a practical bookstore location with warmer tungsten practicals, but I want to bring the two colours a little closer together, and generally key with 4000k inside to let the exterior play somewhat cooler. I've used bca's in the past (too green and hot and they never seem to match each other) but haven't really found an led that fits the bill.

In this case the windows are too big to gel and there are actors entering through the door etc, so cooling down the practicals seems the simplest way to go.

Thanks in advance for any suggestions!
  • 0


#2 Adrian Sierkowski

Adrian Sierkowski
  • Sustaining Members
  • 7075 posts
  • Cinematographer
  • Los Angeles, Ca

Posted 11 August 2017 - 01:22 PM

I don't think there are any LEDs that I know of in edison which fit the bill. Most are 5600K or 6000K and I don't know of any that are bi-color. Maybe a Phillips Hue? But I haven't used them and I hear they can flicker.  The Cree LED 5600Ks, if you can find them still, go a bit green, and the stuff from Quasar is i think 6000K-- but both are single emitter.
You could try to build up some stuff with lite-gear ribbon; but that would be a hell of a to do to build it for each practical.
BCAs are tricky; but they are the closest to what you want color temp wise; though you can't dim them, and yes, matching them is also a pain in the rear.


  • 0

#3 Toby Gorman

Toby Gorman
  • Basic Members
  • PipPip
  • 13 posts
  • Cinematographer

Posted 11 August 2017 - 01:44 PM

Thanks for the input Adrian!
  • 0

#4 Shachar Alfie

Shachar Alfie
  • Basic Members
  • PipPip
  • 13 posts
  • Gaffer
  • Israel(Middle East)

Posted 11 August 2017 - 01:56 PM

https://store.yujiin...bulb-unit-2-pcs


  • 0

#5 Toby Gorman

Toby Gorman
  • Basic Members
  • PipPip
  • 13 posts
  • Cinematographer

Posted 11 August 2017 - 02:34 PM

Ah yes I did see those and they look pretty great. Shame they are not dimmable but definitely worth looking at. Thanks
  • 0

#6 Stuart Brereton

Stuart Brereton
  • Basic Members
  • PipPipPipPip
  • 2939 posts
  • Cinematographer
  • Los Angeles

Posted 11 August 2017 - 05:04 PM

I've used the GE Reveal Relax bulbs in the past. Nice color, but a little more pink than real tungsten. They are 3200k, but at least they don't get warmer when you dim them. I haven't seen anything in the 4000k range. The Quasar A LEDs are available in 2000k, 3000k and 6000k.

 

Maybe if your fixtures and lampshades are big enough you could use a dual socket adapter and then salt and pepper the globes.


  • 0

#7 Toby Gorman

Toby Gorman
  • Basic Members
  • PipPip
  • 13 posts
  • Cinematographer

Posted 11 August 2017 - 11:16 PM

Interesting idea with the salt and pepper, thanks Stuart!
  • 0

#8 Stuart Brereton

Stuart Brereton
  • Basic Members
  • PipPipPipPip
  • 2939 posts
  • Cinematographer
  • Los Angeles

Posted 12 August 2017 - 01:02 PM

Interesting idea with the salt and pepper, thanks Stuart!

A lot will depend on whether the two globes are visible through the shade, but it's worth trying.


  • 0

#9 Michael LaVoie

Michael LaVoie
  • Basic Members
  • PipPipPipPip
  • 713 posts
  • Cinematographer

Posted 16 August 2017 - 05:28 PM

Even if you find the LED's you're looking for, I'd recommend some standard soft white incandescent bulbs in various wattages on hand just to throw in there if you get frustrated with how stuff is reading.  I usually have a crate of those on set for practicals.  They tend to have more flattering light.  I've never been a fan of cool temp bulbs in practical lamps.  They still look odd to me.  I like the color contrast of incandescent with daylight or moonlight.  But that's mostly residential.  In a commercial location, it would depend on the overall set design whether cooler temped practicals might work.


  • 0


Tai Audio

CineTape

Aerial Filmworks

Rig Wheels Passport

Willys Widgets

Gamma Ray Digital Inc

Technodolly

Glidecam

FJS International, LLC

Ritter Battery

Visual Products

Paralinx LLC

Metropolis Post

Wooden Camera

Media Blackout - Custom Cables and AKS

Abel Cine

rebotnix Technologies

The Slider

Broadcast Solutions Inc

CineLab

Gamma Ray Digital Inc

rebotnix Technologies

Abel Cine

Metropolis Post

Tai Audio

Broadcast Solutions Inc

CineTape

Technodolly

CineLab

Visual Products

Wooden Camera

The Slider

Rig Wheels Passport

Aerial Filmworks

Ritter Battery

Paralinx LLC

Media Blackout - Custom Cables and AKS

Glidecam

FJS International, LLC

Willys Widgets