Interesting light/color meter on Kickstarter...

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chris.white

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Interesting light/color meter on Kickstarter...

PostFri May 12, 2017 2:48 pm

Thought there might be some interest from folks around here. I stumbled into it the other day and decided to back it (I am not affiliated in any way). Looks like it's pretty promising and is already officially funded. Still a chance to get in on it at a discounted price for another 7 days...

https://www.kickstarter.com/projects/20 ... r-for-your


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rick.lang

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Re: Interesting light/color meter on Kickstarter...

PostFri May 12, 2017 6:23 pm

The Illuminati are not pleased.


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Anatoly Mashanov

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Re: Interesting light/color meter on Kickstarter...

PostFri May 12, 2017 6:44 pm

Can the meter report CRI and TLCI?

Unfortunately, no.

CRI and TLCI are computed from the full spectrum of the light. The Illuminati meter uses three sensors to measure red, green, and blue light, just like a camera. Unfortunately, that's not enough data to compute the CRI or TLCI.

Unfortunately the color temperature and green shift can be corrected in postprocessing; bad CRI cannot. So I think the color meter that could not at least specifically measure the spectral difference between modern LED lights and black body radiation is worthless.
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John Brawley

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Re: Interesting light/color meter on Kickstarter...

PostFri May 12, 2017 7:07 pm

chris.white wrote:Thought there might be some interest from folks around here. I stumbled into it the other day and decided to back it (I am not affiliated in any way). Looks like it's pretty promising and is already officially funded. Still a chance to get in on it at a discounted price for another 7 days...

https://www.kickstarter.com/projects/20 ... r-for-your


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Chris


This looked good to me too. I'm a backer.

JB
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Gene Kochanowsky

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Re: Interesting light/color meter on Kickstarter...

PostFri May 12, 2017 11:45 pm

Anatoly Mashanov wrote:
Can the meter report CRI and TLCI?

Unfortunately, no.

CRI and TLCI are computed from the full spectrum of the light. The Illuminati meter uses three sensors to measure red, green, and blue light, just like a camera. Unfortunately, that's not enough data to compute the CRI or TLCI.

Unfortunately the color temperature and green shift can be corrected in postprocessing; bad CRI cannot. So I think the color meter that could not at least specifically measure the spectral difference between modern LED lights and black body radiation is worthless.


Originally I was curious, as to how you know they are not using a full spectrum sensor?
I see in the FAQ that they said they were not. It's too bad because I can think of a simple solution created using a digital sensor and a diffraction grating. And there are wide spectrum chip devices available in the market. I wonder why they are not using one of those?

https://groupgets.com/manufacturers/ham ... ectrometer

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Note Suwanchote

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Re: Interesting light/color meter on Kickstarter...

PostSat May 13, 2017 4:21 am

cool, thanks!
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Re: Interesting light/color meter on Kickstarter...

PostSat May 13, 2017 12:22 pm

Thanks Chris for the hint. I have backed them now for a 4x Kit (I think that would be very useful for Greenscreen work).
Saying "Thx for help!" is not a crime.
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chris.white

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Re: Interesting light/color meter on Kickstarter...

PostSun May 14, 2017 4:16 pm

Gene Kochanowsky wrote:I wonder why they are not using one of those?

https://groupgets.com/manufacturers/ham ... ectrometer


My guess is cost. I think the main objectives were to create something effective in both low cost (comparatively) and function in a small multi-use form factor.

The spectrometers alone you linked to appear to cost the same as what they're selling the illuminati for in the KS deal.
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rick.lang

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Interesting light/color meter on Kickstarter...

PostSun May 14, 2017 5:21 pm

Maybe they'll tackle a full spectrum meter next. I'd love to have a full spectrum view which would be very useful evaluating the light in a scene from the perspective of the wavelengths. Also having CRI and TCLI could be just as useful as the traditional scopes in determining how to control the light finally hitting your camera sensor.


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Keith Babineaux

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Re: Interesting light/color meter on Kickstarter...

PostSun May 14, 2017 5:59 pm

For $200, you won't find another light meter that's capable of doing what this light meter does. This is excellent for a 1 man documentary filmmaker like myself. You won't find a bluetooth light meter anywhere. My Sekonic 758-Cine was $599 and I can't measure white balance and I have to stop every time the sun shifts to get another reading. My name is in the comments section so you know I'm a backer.
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rick.lang

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Re: Interesting light/color meter on Kickstarter...

PostMon May 15, 2017 12:51 am

When I went to the funding page Thursday, there were no more preorders available for a single unit.


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Patrick Finnegan

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Re: Interesting light/color meter on Kickstarter...

PostMon May 15, 2017 8:10 am

Here is an interesting alternative that is much more compact in design and also makes use of an iphone to operate.

https://www.kickstarter.com/projects/lu ... the-future
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John Brawley

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Re: Interesting light/color meter on Kickstarter...

PostMon May 15, 2017 9:46 am

Patrick Finnegan wrote:Here is an interesting alternative that is much more compact in design and also makes use of an iphone to operate.

https://www.kickstarter.com/projects/lu ... the-future


Errr, they're about a year late on their delivery ? Mar 2016 for delivery, and the project was funded in 2015 ?

There's plenty of other options. There's a great app that uses the camera itself that I've found to be remarkably accurate.

https://itunes.apple.com/us/app/cine-me ... 18884?mt=8

I also own one of these. They ain't cheap.

http://www.sekonic.com/united-states/pr ... rview.aspx

This one in this thread though is for those that want a separate sensor. This one could stay in a fixed location while you walk the set. I think that's what you're paying for.

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Rakesh Malik

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Re: Interesting light/color meter on Kickstarter...

PostMon May 15, 2017 3:58 pm

rick.lang wrote:When I went to the funding page Thursday, there were no more preorders available for a single unit.


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Check again -- I found a single unit option. I think the one that's sold out is an early bird deal that has a slightly better discount. They probably added the additional single unit option later on.
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rick.lang

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Re: Interesting light/color meter on Kickstarter...

PostMon May 15, 2017 4:38 pm

Rakesh, you're right, my bad.


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Re: Interesting light/color meter on Kickstarter...

PostMon May 15, 2017 4:41 pm

rick.lang wrote:Rakesh, you're right, my bad.


No worries. It happens, especially when there are 700 rewards available ;)
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rick.lang

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Re: Interesting light/color meter on Kickstarter...

PostMon May 15, 2017 4:48 pm

I use Cine Meter, but the one area that can still baffle me is... TINT. I want to know how to relate the tint values shown in Cine Meter to the tint setting on the URSA Mini 4.6K. This thread includes a response from Dwaine (BMD) that is discouraging at first glance. Anyone else know the relationship between CC values in Cine Meter and the tint values in the camera (and Resolve)? Hope this isn't a dumb question. NB: tint range is now -100 to +100 in Resolve 14beta manual.

http://www.cinematography.com/index.php?showtopic=63840



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Frank Glencairn

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Re: Interesting light/color meter on Kickstarter...

PostTue May 16, 2017 7:34 am

Maybe a bit old school, but his works like a charm, and under 40 bucks

https://www.aliexpress.com/item/Handhel ... .20.8TOtwG
http://frankglencairn.wordpress.com/

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rick.lang

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Interesting light/color meter on Kickstarter...

PostTue May 16, 2017 4:01 pm

I'd find useful a solution which shows UV and IR wavelengths too. The Everfine SPIC-200 with one sensor used for both spectrometer and light meter costs about $1K and the SFIM-300 with two sensors, one dedicated to the spectrometer and one for the light meter and costs about $2K. The more expensive is more accurate and includes use at low hertz when testing flickering. Both are industrial meters but the SPIC-200 should be good for cinematography.

The SFIM-300 is used by SLR Magic.

Andrew Chan and I discussed the Cine Meter product that John Brawley suggested with the Luxi attachment for the iPhone. Andrew cautioned that incident meters that use the traditional half-globe (that gathers light from a very wide angle) may not give measurements as useful as a meter like the Everfine meters that use a flat surface for incident readings. That half-globe approach was invented many decades ago and used ever since, but it doesn't mean it's the best approach. Luxi uses a half-globe, but a better solution would be to mount a wide angle lens with a flat piece of white semi-opaque plastic in front of the lens.

SFIM-300
http://www.everfine.net/productinfo.php?pid=188&fid=10

SPIC-200
http://www.everfine.net/productinfo.php?pid=166&fid=10

Image



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Re: Interesting light/color meter on Kickstarter...

PostTue May 16, 2017 6:31 pm

Patrick Finnegan wrote:Here is an interesting alternative that is much more compact in design and also makes use of an iphone to operate.

https://www.kickstarter.com/projects/lu ... the-future


I was one of the first 100 backers a year ago. After a year of emails back and forth, I canceled my pre-order. They can't get it right. That means that it's a waste of money to purchase something that is supposed to come out a year ago. This bluetooth light meter looks way better.
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Re: Interesting light/color meter on Kickstarter...

PostTue May 16, 2017 7:43 pm

Frank Glencairn wrote:Maybe a bit old school, but his works like a charm, and under 40 bucks

https://www.aliexpress.com/item/Handhel ... .20.8TOtwG


Frank, how do you use a spectroscope to get color metering in Kelvin?
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Re: Interesting light/color meter on Kickstarter...

PostWed May 17, 2017 7:45 am

You don't, you just see the spectrum of your light sources (and the gaps, when using LED or florescence bulbs)

Since I only shoot raw, I don't care too much about Kelvin - in the ballpark is good enough for me.
But I do care about bad light sources.
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Robert Niessner

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Re: Interesting light/color meter on Kickstarter...

PostFri Dec 01, 2017 1:17 pm

I'd like to post an update here:
The first Illuminati Wireless Light & Color Meters have been shipped, so I might get my batch of 4 maybe before christmas.
Looking forward to play with the meters and test them out.
Saying "Thx for help!" is not a crime.
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Read the blog in English via Google Translate:
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Re: Interesting light/color meter on Kickstarter...

PostFri Dec 01, 2017 4:54 pm

rick.lang wrote:I use Cine Meter, but the one area that can still baffle me is... TINT. I want to know how to relate the tint values shown in Cine Meter to the tint setting on the URSA Mini 4.6K. This thread includes a response from Dwaine (BMD) that is discouraging at first glance. Anyone else know the relationship between CC values in Cine Meter and the tint values in the camera (and Resolve)? Hope this isn't a dumb question. NB: tint range is now -100 to +100 in Resolve 14beta manual.

http://www.cinematography.com/index.php?showtopic=63840



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Not dumb at all Rick. i use Cine Meter and still want to know how they relate or use it too with the BMD cameras. So if anyone knows, please share.
URSA Mini Pro 4.6K G2, Blackmagic Design Pocket Cinema Camera 6K, Panasonic GH5
PC Workstation Core I7 64Gb, 2 x AMD R9 390X 8Gb, Blackmagic Design DeckLink 4K Mini Monitor, Windows 10 Pro 64-bit, Resolve Studio 18, BM Micro Panel & Speed Editor
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Re: Interesting light/color meter on Kickstarter...

PostFri Dec 01, 2017 11:03 pm

Robert Niessner wrote:I'd like to post an update here:
The first Illuminati Wireless Light & Color Meters have been shipped, so I might get my batch of 4 maybe before christmas.
Looking forward to play with the meters and test them out.


Great! Looking forward to hearing what you think of them.
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