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Z90 LED PHOTO/VIDEO LIGHT

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Somebody set up us the bomb.

Z90 LED Photo/Video Light, retail $985.00 (www.zylight.com...)
Manufactured by Zylight (www.zylight.com)
Last updated 09-12-10

The Zylight Z90 is an LED photo/video light that not only sheds light on the subject (pun intended), the color temperature is fully adjustable from 2500°K to 9000°K (the "°" sign is not normally used when expressing color temperature in degrees Kelvin; I used it just this once so that you would know what I was talking about when you see a value like "4500K" or "7000K") in increments of 50K. It can also emulate filter gels mounted to the fronts of fixtures using incandescent photoflood bulbs, giving you millions of possible color choises!!!

The Z90 also has a RF (radio frequency) transmitter/receiver built in, so that you can have an installation of multiple Z90 units and only have to adjust one -- the others will adjust themselves automatically to match the settings on the one you're changing.

***VERY IMPORTANT!!!***
The first product photograph on this web page is from the Zylight website and was used with written permission.

Size of product w/hand to show scale

SIZE

The Z90 is equipped with ¼"x20 female threaded receptacles both on the upper and lower surfaces of its body. This size of receptcle is rather standard for tripods used for photography and videography.

This is a fairly "complexicated" piece of kit, so since I do not feel like writing a book today, I'll instead refer you to the user's manual linked directly below.

The user's manual for the Zylight Z90 is RIGHT HERE -- you'll need to have Adobe Acrobat installed on your computer in order to view this.

Since this product is not specifically designed to use disposable batteries (not in the unit itself anyway), I do not have to tell you which part to remove, place at the top of the basement stairs, kick down those stairs into the basement crawling with thousands of hungry piss ants with full bladders, and then rather emphatically tell you not to.

The Z90 can draw up to 30 watts at full power (2.5 amps @ 12.0 volts, or 2.1 amps @ 14.40 volts). When powering the Z90 from a battery, be sure your battery is rated to supply up to 30 watts continuously.

Important Camera Power Note: Always use the battery power socket closest to your battery, i.e. the D-Tap socket found on an Anton Bauer Gold Mount.

Many professional cameras have an on-board socket for powering a camera light. These connectors are often rated for less than 30W, and do not deliver the power required for normal Z90 operation.

This is a photo/video light (and a rather high-end one!), not a flashlight meant to be thrashed, trashed, bashed, and abused; so I won't run over it, swing it against the concrete floor of a porch, attempt to drown it in the cistern (toliet tank), use a medium claw hammer in order to bash it open to check it for candiosity, fire it from the cannoñata, drop it down the top of Mt. Erupto (I guess I've been watching the TV program "Viva Piñata" too much again

- candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piñata Central), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoñata (also located at Piñata Central) is only used to shoot piñatas to piñata parties away from picturesque Piñata Island, and Mt. Erupto is an active volcano on Piñata Island {In the episode "Les Saves the Day...Again", Paulie Preztail says "Hey, ever wonder why this park's called 'Mount Erupto' anyway?", then Franklin Fizzlybear says "I think its an old native term. Means 'very safe.'"}), send it to the Daystrom Institute for additional analyses, or inflict upon it punishments that flashlights may have inflicted upon them.

This is a "loaner" anyway, so I would not perform any abusive or potentially destructive tests on it, regardless of what type of product it was.

Beam photograph (2500K) on the test target at 12".
Measures 56,100mcd (minimum) and 176,000mcd (maximum).

Beam photograph (9000K) on the test target at 12".
Measures 43,300mcd (minimum) and 276,000mcd (maximum).

A Meterman LM631 (now Amprobe LM631A) light meter was used for these measurements.

If I've told you once, I've told you 31,054,500 times:
Wider viewing angles always, ALWAYS, ALWAYS equal lower mcd values!!!

Beam photograph (5000K) on a wall at ~10 feet.

Those colored graphics toward the left are my "Viva Piñata" posters, and that clock on the right that looks like a gigantic wristwatch is my Infinity Optics Clock.
You may also be able to see two of my SpongeBob SquarePants plush (Squidward Tentacles & Patrick Star) and a Digimon plush (Greymon)

Photograph of one of the alphanumeric displays on the back of this light.
That's part of it, there, at the upper left.

Photograph of one of my Viva Piñata posters, Z90 not on -- the Canon Speedlite 420EX was used.

Photograph of one of my Viva Piñata posters, Z90 set to "TUNGSTEN".
The white balance on the Canon Powershot G3 Digital Camera used for these photographs was set to "Cloudy".

Photograph of one of my Viva Piñata posters, Z90 set to "DAY".

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 2500K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 3000K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 3500K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 4000K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 4500K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 5000K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 5500K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 6000K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 6500K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 7000K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 7500K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 8000K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 8500K.

Photograph of one of my Viva Piñata posters, Z90's color temperature set to 9000K.

A photographic color test chart or even a bowl of assorted fruit would have been better here, but since I have access to neither, I chose the most colorful thing (with regards to having many colors) I could get my hands on.

Spectrographic analysis of the LEDs (2500K) in this video light.

Spectrographic analysis of the LEDs (4500K) in this video light.

Spectrographic analysis of the LEDs (9000K) in this video light.

Spectrographic analysis of the LEDs (red) in this video light.

Spectrographic analysis of the LEDs (green) in this video light.

Spectrographic analysis of the LEDs (blue) in this video light.

Spectrographic analysis of the orange indicator LEDs on the back of this video light.

Spectrographic analysis of the amber/yellow LEDs in one of
the alphanumeric displays on the back of this video light.

USB2000 spectrometer graciously donated by P.L.

ProMetric analysis

Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.
That squarish "dip" to the left of center that queered the test

is a defect
in the ProMetric's CCD array which cannot be repaired or compensated for.

Video clip on YourTube showing the unit changing color temperature.
It starts at 6000K, then increases to 9000K, decreases to 2500K, then increases once more to 9000K.

This clip is approximately 6.185634566789 megabytes (6,320,248 bytes) in length; dial-up users please be aware.
It will take no less than thirty one minutes to load at 48.0Kbps.

Video clip on YourTube showing the unit in "gel" mode, changing colors.

This clip is approximately 21.784232345234 megabytes (21,910,558 bytes) in length; dial-up users please be aware.
It will take no less than one hundred eight minutes to load at 48.0Kbps.

TEST NOTES:
Test unit was loaned to me by my friend M.B. in Oregon state USA, and arrived at 3:29pm PDT on 07-19-10 (or "19 Jul 2010" if you prefer).

Unit is a "loaner", so that dreadful "

" icon will appear appended to its listings on this website when it is returned, denoting the fact that I no longer have it at my disposal for comparisons or additional analyses.

The AC power supply is rated to have an input voltage of 100 volts to 240 volts, and an output of +12 volts DC at 2.50 amps.
Polarity is the usual center positive (+), outer can negative (-).

UPDATE: 09-12-10
The unit has now been boxed up for return to its owner, therefore, that dreadful "

" icon has now been appended to its listings on this website, denoting the fact that I no longer have it at my disposal for additional analyses or comparisons.

PROS:
Easily alterable color temperature
Wide intensity range
Gel mode offers millions of color choises!
Uses LEDs for long lamp life & cool operation
Wide range of input voltage

CONS:
Nothing that I've yet to find!!!

Zylight

LED photo/video light

High-powered LED

At least 32 (8 ea. red, blue; 16 ea. green)

Diffuse flood; 60° to half-intensity point, ~130° total

Pushbuttons & rotary dials

Metal and plastic

Metal; LEDs protected by plastic diffuser cap

N/A (can operate from +7.0 volts to +24.0 volts)

Unknown/unable to measure (advertised as 2.10A at +12 volts)

Very light splatter-resistance at maximum

FOR CHRIST SAKES NO!!!

Power supply unit, AC cord for PSU, possibly a battery pack, charger, and cord for it

5.340" L x 3.00" W x 2.00" D

16.0 oz (454.0 g)

United States

1 year

Z90 LED Photo/Video Light * www.zylight.com...

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