design


Many LED luminaires do not use high frequency drivers to eliminate flicker in the same way high frequency fluorescent lamp ballasts eliminate flicker. Shooting video in environments with  a lot of LED luminaires can produce video with distracting flicker. Viewers do not want to be distracted, and will switch off  if they see annoying flickering.

LED Lighting Video Recording Tips?

To eliminate flicker, for 120V 60Hz locations, the best shutter speeds to use are at multiples of 120, while at 220/230V 50Hz power locations, best shutter speeds are in multiples of 100. This Telegraph video seems to have been shot at 25 fps, which may be why a lot of annoying flicker can be seen. For flicker free video in 50Hz electrical environments, shooting at 50 or 100 fps should give best flicker free results, for 60Hz, 60 to 120 fps should give best results

For 50Hz 1/100, 1/50, 1/33, 1/25. 50 & 100 fps should = best results
For 60Hz 1/120, 1/60, 1/40, 1/30. 60 & 120 fps should = best results

This video should most likely have been recorded at 100 fps or 50 fps. In post-production there is no fix for this strobing effect. The only solution is to test other camera settings & re-shoot.

A best approach when Designing Architectural Lighting is to specify LED luminaires with high frequency, flicker free dimming drivers.

See full video & Telegraph article here: http://bit.ly/1cvuZxH

 There seems a mad rush to use blue light in your Fridge.

FrigdeSmallPic

A new stainless steel fridge might look nice in your kitchen, but open the door.

What do you see? Is this what food looks like on your kitchen counter or table?

Is this what the food looked like when you bought it?

Light, and the colour of light, affects how we see the environment around us.

Do you want to see food that looks artificially cold, or do you want to see food in the correct light?

The purpose of fridge lighting is to communicate information; we need to see food, and its colour, to decide if it is healthy to eat.

Does a steak look blue, grey, or red fresh and ready to cook & eat? The colour of food helps tell us if is healthy to eat. Is opening your fridge a pleasurable experience?

Can you see everything? Does the food look good? What can you see?

LEDs can provide excellent optical control of light beams in low profile housings. Fridge interior area lighting may be improved with multiple low profile LED lights vs. past methods that used a single fridge lamp.

LED lighting does not have to have poor colour rendition. It is possible to have correct and accurate colour LED lighting in fridges.

Does the food in your supermarket refrigerator case look correct? Much supermarket food is now being lit with linear strip LED lighting. Custom LED lamp phosphor blends can offer accurate colour lighting.

What do you see inside these fridges? Does this look like food you want to eat?

Could fridge interior blue light imply a false sense of food temperature & appearance?

Will blue colour light make you think food is cold, when the fridge is off?

Does fridge lighting make food look like un-ripened fruit that should be left to ripen, but due to colour appearance might be left to rot?

Accurate light colour rendition seems a common sense consumer protection safety issue.

Should a 2000 dollar fridge come with a 2 dollar light?

Fridge interior visual design experience is important, as is accurate and well placed glare free lighting. Fridge manufacturers need to invest in more in how and what consumers see, to meet expectations, and ensure food safety.

There are standards for lighting colour quality.

Do consumers need protection from poor quality lighting colour? Yes they do.

A global view of the food we eat  look & listen to NPR’s review of the book,  ‘Hungry Planet: What The World Eats’   Photographer Peter Menzel and writer Faith D’Aluisio visited 30 different families around the world noting the food they eat

Many candelabra lamps look nothing like the candle flames they replace.

What a shame.

Good lighting provides the ‘lean forward moment’ found in film. The visual impression should be one of invitation, enjoyment and appealing appearance of space.

Too often candelabra lamps are nothing like the flames they replace.

Older style Incandescent candelabra lamps needed larger exterior glass envelopes to prevent the lamp glass from melting due to filament heat. Unfortunately many seem not to have understood the reason for this lamp construction solution and kept this larger, not to scale lamp size. It seems often fluorescent and LED sources are placed inside plastic large format candelabra lamp format envelopes…resulting in nothing but unsightly hideous glare bombs.

Good Lighting invites the viewer to enjoy the created space. Chandeliers essentially are  best only as decorative lighting. Attractive artistic shapes is what they can offer.

A dark, light story:

Ritz-Carlton Central Hong Kong.  Opened 1993. Demolished 2008.

A story told was the Interior Designer decided to be the Lighting Designer and essentially only used Chandeliers to light the hotel. The main lobby was dark & dreary and the room occupancy always low. A five-star hotel should never have had dark brooding lobbies and public circulation spaces. Overly bright chandeliers became glare bombs.  The best part of the hotel was the Health Club which had lighting designed by Tony Corbett. You could see the difference.

Lighting Design is all about what you want to see and how you want to see it. It has been said there are only three kinds of lighting. Bad Lighting which is obvious. Indifferent Lighting which while it may be technically correct, is uninspired, and Good Lighting invites the viewer to want to walk into a space to enjoy the created environment.  The viewer feels the instantaneous sensation of the film ‘lean forward moment’ and is compelled to enjoy the created space.

In 1975 Ingmar Bergman filmed the Magic Flute in the Drottningholm Palace’s 17th century Theatre.

Many years ago I traveled to see this Theatre and the chandelier candle replacement lamps. The candelabra lamps wobble independently mimicking the appearance of flames. Magic. You were instantly transported back in time, the created environment of the theater felt much the same as it would have had all chandeliers been lit with candles, but without the smokey smell smog.

This video compilation shows this unique lamp and heritage space. Seeing moving incandescent flame size lamps, was a magical experience.

Drottningholm Court Theatre Chandeliers

Unfortunately I have yet to see any decent LED chandelier candle replacement lamps which mimic the friendly flicker of flames…

Conversations on film making often seem to start with hardware.

Film making is not about hardware, there are no magic bullets, it is all about the story.

What do you want to say, and how do you want to say it?

For film the next question is what do you want to see & how do you want to see it?

Robert Primes at [3 min] discusses how words are poor descriptors of visual information.

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The time investment to craft a well told story or marketing program is not well understood. In a 4 month re-write of product catalogues & manuals, the product never changed, but 18 months later, sales doubled because the story changed.

Consider a Play.
Well written Scripts take time, and Actors must rehearse. When the Director is satisfied, the first curtain goes up.

We end up back to the idea that it all starts with the story.
What do you want to say, and how do you say it?
What will viewers see, and how will they see it?

With limited viewer attention time you must have effective efficient delivery of stories and video can deliver. Jack Welch is quoted as saying, “You can’t manage what you do not measure.” It is easy to measure video viewers. However now there may be new tools to measure the effectiveness of the well told story.

Dr. Paul Zak used an emotional film to measure how our brains respond to effective storytelling.  As part of this research brain neural activity was measured of viewers. He discovered even a simple narrative, if it follows elements of the dramatic arc of exposition, rising action, climax, falling action, and dénouement, described by playwright Gustav Freytag, can evoke powerful empathic responses associated with neurochemicals cortisol and oxytocin.

Brain responses to storytelling can translate into actions. In Dr. Zak’s research his subjects increased donations to charity and gifts to others in the research group.  He found stories that did not follow the dramatic arc, no matter how happy or pleasant they may be, produced little if any chemical or emotional response, and lacked a similar response to action. His research contains clues on measuring the well-made story.

This was the test story.

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What makes a well-made story for you?

Try these links:

http://futureofstorytelling.org/

Paul Zak: Trust, morality — and oxytocin

http://www.moralmolecule.com/

For discussions on script writing listen to the Script Notes podcast: http://johnaugust.com/podcast

The Digital Convergence Podcast Episode 94: The Producer Show included these topics

Why is story telling important to business?
What is your goal in story telling?
How do you develop an effective story?
What is the structure of a good story?
How do you know if a story is too long, short, or just right?

To listen to the podcast click here: Episode 94: The Producer Show If you have not seen, the funniest movie on producing is The Producers by Mel Brooks with Zero Mostel & Gene Widler. The Producers – 1968 (Trailer)

Jonathan Gottschall in his book The Story Telling Animal  suggests humans are “wired” for storytelling and offers a theory that we use storytelling to help navigate complex social problems in life.

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Nancy Duarte: The Secret Structure of Great Talks?
On the structure of Steve Job‘s presentations to Martin Luther King’s “I have a dream speech”, Nancy compares common construction of successful stories.

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Pictures Better Than Words?

Teachers know the problem is not content but delivery. Using text only email, introduces a reader time consumption problem. Best text is distilled like poetry with pictures & video for effective delivery. Understanding the Picture Superiority Effect helps deliver.

“When it comes to memory, researchers have known for more than 100 years that pictures and text follow very different rules. Put simply, the more visual the input becomes, the more likely it is to be recognized—and recalled. The phenomenon is so pervasive, it has been given its own name: the pictorial superiority effect, or PSE.”   John Medina

The Evolution of Communication?

Picture Superiority Effect Evolution

A brief history of writing from the British Museum (click for video)

A Research Paper on the Picture Superiority Effect.

“Conceptual and perceptual factors in the picture superiority”
EUROPEAN JOURNAL OF COGNITIVE PSYCHOLOGY 2006, p.1-35, Georg Stenberg, Kristianstad University, Kristianstad, Sweden

Editor: The Washington Post holds its neologism contest every year.
The contest asks readers to supply alternate meanings for common words.

Following are the winners from a year with a particularly good crop of submissions.

1. Coffee (n.), the person upon whom one coughs.
2. Flabbergasted (adj.), appalled over how much weight you have gained.
3. Abdicate (v.), to give up all hope of ever having a flat stomach.
4. Esplanade (v.), to attempt an explanation while drunk.
5. Willy-nilly (adj.), impotent.
6. Negligent (adj.), describes a condition in which you absent mindedly answer the door in your nightgown.
7. Lymph (v.), to walk with a lisp.
8. Gargoyle (n.), olive-flavoured mouthwash.
9. Flatulence (n.) emergency vehicle that picks you up after you are run over by a steamroller.
10. Balderdash (n.), a rapidly receding hairline.
11. Testicle (n.), a humorous question on an exam.
12. Rectitude (n.), the formal, dignified bearing adopted by proctologists.
13. Pokemon (n), a Rastafarian proctologist.
14. Oyster (n.), a person who sprinkles his conversation with Yiddishisms.
15. Frisbeetarianism (n.), (back by popular demand): The belief that, when you die, your Soul flies up onto the roof and gets stuck there.
16. Circumvent (n.), an opening in the front of boxer shorts worn by Jewish men.

My favorite lighting design  neologism is from the Simpson’s. After looking at his father’s horrible attempt putting up Christmas lights, Bart Simpson looks at the holiday lights outside the house and says, “It’s craptacular.”

Ah… I can’t wait till next year to see the next batch of winners

In addition the Washington Post’s Style Invitational asked readers to take any word from the dictionary, alter it by adding, subtracting, or changing one letter to supply a new definition. Here are this year’s winners:

1. Bozone (n.) The substance surrounding stupid people that stops bright ideas from penetrating. The bozone layer, unfortunately, shows little sign of breaking down in the near future.
2. Cashtration (n.) The act of buying a house, which renders the subject financially impotent for an indefinite period.
3. Giraffiti (n) Vandalism spray-painted very, very high.
4. Sarchasm (n) The gulf between the author of sarcastic wit & the person who doesn’t get it.
5. Inoculatte (v) To take coffee intravenously when you are running late.
6. Hipatitis (n) Terminal coolness.
7. Osteopornosis (n) A degenerate disease. (This one got extra credit.)
8. Karmageddon (n) It’s like, when everybody is sending off all these really bad vibes, right? And then, like, the Earth explodes and it’s like, a serious bummer.
9. Decafalon (n.) The grueling event of getting through the day consuming only things that are good for you.
10. Glibido (v) All talk and no action.
11. Dopeler effect (n) The tendency of stupid ideas to seem smarter when they come at you rapidly.
12. Arachnoleptic fit (n.) The frantic dance performed just after you’ve accidentally walked through a spider web.
13. Beelzebug (n.) Satan in the form of a mosquito that gets into your bedroom at three in the morning and cannot be cast out.
14. Caterpallor (n.) The color you turn after finding half a grub in the fruit you’re eating.

And the pick of the lot is:*Ignoranus (n): A person who’s both stupid and an  *______.

Babies undergoing phototherapy for hyperbilirubinemia, have eye masks to prevent risk of UV exposure and to eliminate risk of retinopathy of prematurity. Lights in neonatal wards are not allowed on 24 hours a day. Direct & bare lamp use is not allowed.

Phototherapy lamps used have a special phosphor coatings only for bililights. As an added precaution the bililights I designed use a museum quality acrylic UV filter.

Newer medical research indicates a slight shift in action spectrum may speed photo therapy. LEDs can be used for this phototherapy. Much research has found them to be as effective as the special fluorescent bililamps, however as LEDs have a more pronounced spectral peak, it may be possible that superior combination of LEDs and phosphors may replicate a faster reacting action spectrum.

LEDs can offer similar, if not the same phototherapy as the best fluorescent bililamps, but as all lights dim in brightness as they age, control algorithms for LEDs can ensure maintained light levels are delivered for a 15 year bililight source service lives. This is not yet being done for phototherapy but I trust testing may soon start.

Both terms and their effects, need simultaneous review when discussing LED performance decline over time.

Depreciation commonly is used to refer to the decline in brightness over time as a light source is used, known as lamp lumen depreciation.

LEDs also degrade.

Degradation, many may think of chemical decomposition but there is also elegant degradation. One or both of these conditions seems commonly referred to, and one or both, may occur at the same time.

LED performance depreciates over time as less lumens are emitted. The more any light is used, the more a light source brightness dims over time.

LED lumen depreciation can be solely due to heat conditions. Research has verified this independent of LED operation.

Evidence of LED lamp lumen depreciation is useful, however we know in addition to lumen deprecation, LED Kelvin CCT (Correlated Color Temperature) changes over time.  If change in apparent colour appearance of an LED, and lumen depreciation are plotted at the same point, we can see how these changes may parallel each other in some LED sources, while for others, they may be independent.

Decline in LED lamp lumens and colour temperature change over time varies between manufacturers. It seems sensible to test LED Kelvin CCT measurements and plot them at the same time as Lumen measurements are taken when LED life performance testing is conducted.

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