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#318739 - 12/07/19 07:39 PM Re: RoundTable for Fall 2019 [Re: NW Ponderer]
logtroll Offline
veteran

Registered: 04/26/10
Posts: 9749
Loc: One of the Mexicos
Originally Posted By: NW Ponderer
ROFL. Was it terribly orange? Maybe it was just the lighting.

It's the gaslighting...
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#318741 - 12/07/19 09:11 PM Re: RoundTable for Fall 2019 [Re: Jeffery J. Haas]
Jeffery J. Haas Offline
It's the Despair Quotient!
Pooh-Bah

Registered: 08/03/04
Posts: 14857
Loc: Whittier, California
Hey, I think I lured another new Ranter into the familia.
Please welcome "Keridan" and make him feel at home.
Keridan, you will find fellow DP members here so you're among friends already, and you will definitely make some new ones here, too.
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#318742 - 12/07/19 09:12 PM Re: RoundTable for Fall 2019 [Re: pdx rick]
Jeffery J. Haas Offline
It's the Despair Quotient!
Pooh-Bah

Registered: 08/03/04
Posts: 14857
Loc: Whittier, California
Originally Posted By: pdx rick

Where'd the other new guy chagos go? Hmm


Oh I imagine he will mosey on over shortly. wink
_________________________
"The Best of the Leon Russell Festivals" DVD
deepfreezefilms.com

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#318743 - 12/07/19 09:18 PM Re: RoundTable for Fall 2019 [Re: NW Ponderer]
Jeffery J. Haas Offline
It's the Despair Quotient!
Pooh-Bah

Registered: 08/03/04
Posts: 14857
Loc: Whittier, California
Originally Posted By: NW Ponderer
Originally Posted By: pdx rick


I just took a large Trump, and had to flush sixteen times. smile
ROFL. Was it terribly orange? Maybe it was just the lighting.


Oh yeah, about that lighting issue:

Some of you are photogs, so if you know this, just skip over it.

2700K = incandescent lamps
3200K = "warm" incandescent lamps
5600K = "daylight" incandescent lamps
6500K = sunlight

The beauty of LED lights is that they run so cool that you can slap any color lighting gel you want on them, thus MAKING them warmer if you want.

The beauty of GOOD LED lights is that they emit a very pure light with no spikes in the green, orange or magenta spectrum, all the colors are equally balanced to emit pure white, OR pure warm light if you purchase "warm" LED's, which produce light closer to the 3200K portion of the color spectrum.

So, as usual, Donald Trump doesn't understand how simple it is to have decent lighting with LED lights, but the professional photographers whose job it is to make him look good certainly do, it's just that he thinks he knows more than they do.
After all, he knows more than the generals, right?
_________________________
"The Best of the Leon Russell Festivals" DVD
deepfreezefilms.com

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#318745 - 12/08/19 04:03 AM Re: RoundTable for Fall 2019 [Re: Jeffery J. Haas]
pdx rick Offline
Member
CHB-OG

Registered: 05/09/05
Posts: 42281
Loc: Puget Sound, WA


How is it that Fatass Trump just now noticed that he's orange? Hmm

Dude is not very perceptive. - or self aware. coffee
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#318748 - 12/08/19 08:13 AM Re: RoundTable for Fall 2019 [Re: Jeffery J. Haas]
pdx rick Offline
Member
CHB-OG

Registered: 05/09/05
Posts: 42281
Loc: Puget Sound, WA

Super mean, but hilarious Saturday Night Live cold open making fun of Trump.

smile

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#318749 - 12/08/19 10:14 AM Re: RoundTable for Fall 2019 [Re: Jeffery J. Haas]
pondering_it_all Offline
veteran

Registered: 02/27/06
Posts: 9135
Loc: North San Diego County
Most white LEDs are really blue LEDs covered with a layer of mixed phosphors. They can pick any phosphors they want to set the color temperature. You can buy much more expensive red-green-blue LEDs and control each color separately to get any color you want. But that's just human perception: Those have very narrow bands of red, green, and blue with nothing in between. Put a yellow, cyan, or magenta object under those RGB LEDs and it looks black! That's why they have a very low Color Rendering Index.

The much stronger and cheaper white LEDs phosphors have broad spectra of emission, so they can get 90% or even higher CRI. (Sunlight is 100%.) And any white LED has enough of every color that you can put gels in front of them to alter the color temperature.

Fun stuff! The other fun thing is the brightness is controlled by current. The voltage does not change much since they are semiconductor devices, actually diodes. So you have to run them with a current regulated driver, and vary the current if you want to dim them. Takes some commercial drivers or knowing what you are doing if you want to DIY. A lot more complicated than an incandescent bulb. About half the cost of an LED fixture is the driver.

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#318755 - 12/08/19 05:11 PM Re: RoundTable for Fall 2019 [Re: pondering_it_all]
Jeffery J. Haas Offline
It's the Despair Quotient!
Pooh-Bah

Registered: 08/03/04
Posts: 14857
Loc: Whittier, California
Originally Posted By: pondering_it_all
Most white LEDs are really blue LEDs covered with a layer of mixed phosphors. They can pick any phosphors they want to set the color temperature. You can buy much more expensive red-green-blue LEDs and control each color separately to get any color you want. But that's just human perception: Those have very narrow bands of red, green, and blue with nothing in between. Put a yellow, cyan, or magenta object under those RGB LEDs and it looks black! That's why they have a very low Color Rendering Index.

The much stronger and cheaper white LEDs phosphors have broad spectra of emission, so they can get 90% or even higher CRI. (Sunlight is 100%.) And any white LED has enough of every color that you can put gels in front of them to alter the color temperature.

Fun stuff! The other fun thing is the brightness is controlled by current. The voltage does not change much since they are semiconductor devices, actually diodes. So you have to run them with a current regulated driver, and vary the current if you want to dim them. Takes some commercial drivers or knowing what you are doing if you want to DIY. A lot more complicated than an incandescent bulb. About half the cost of an LED fixture is the driver.


:applaud:
_________________________
"The Best of the Leon Russell Festivals" DVD
deepfreezefilms.com

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#318756 - 12/08/19 05:45 PM Re: RoundTable for Fall 2019 [Re: Jeffery J. Haas]
logtroll Offline
veteran

Registered: 04/26/10
Posts: 9749
Loc: One of the Mexicos
Yabbut, ain't led bad fer ya, Jethro? I heerd it makes a boddy week in the haid...

Quote:
Lead exposure has been linked with various types of brain damage. These include

Problems with thinking (cognition);
Difficulties with organizing actions, decisions, and behaviors (executive functions);
Abnormal social behavior (including aggression); and
Difficulties in coordinating fine movements, such as picking up small objects (fine motor control) [Cecil et al. 2008].
Sufficient evidence in children shows that BLLs <5 Ķg/dL are associated with increased diagnosis of attention-related behavioral problems, greater incidence of problem behaviors, and decreased cognitive performance. This is indicated by

Decreased IQ,
Lower academic achievement, and
Reductions in specific cognitive measures

I s'pect that there's why ol' Trumper don't like them led lites.
_________________________
You canít solve a problem without first understanding what the problem is.

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#318758 - 12/08/19 08:05 PM Re: RoundTable for Fall 2019 [Re: Jeffery J. Haas]
pondering_it_all Offline
veteran

Registered: 02/27/06
Posts: 9135
Loc: North San Diego County
I remember when everybody wanted pink incandescent bulbs in their bathroom, because they were supposed to make you look better in the mirror. Or were better for putting on makeup. That's when the alternative was cool white fluorescent. My step-brother is on the spectrum and his big fixation is LED color temperature. I recall when everybody was excited about the new warm white fluorescents, because they were so much cozier than cool white. But his fixation led him to replace all his 2700 K LEDs with 5000 K or 6500 K LEDs all through the house: He's insisting on cool white!

Maybe Trump would like his old 2700 K LEDs.

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