Luminaire Comparisons

Produced by:

Light Modifiers Rental
 

Written by:

Camrin Petramale & Neil Adamson

Test Results

Color Rendition

Written by:

Camrin Petramale & Neil Adamson

As discussed in Color: Part 1, there are a number of useful measurements to consider when looking at a fixtures color. Below, we detail how to read two of the graphic measurements. 

Also included within the results are each light's Mired number and G/M index number. These numbers give context to the Correction Gels needed to adjust any CCT or G/M shifts from the desired measurements. Refer to the table below for different manufacturer's thresholds on each gel.

Each reading was done with in-house lights which see standard rental house usage. In each test, the newest available fixtures were tested to present as close to an ideal reading as possible. Readings were taken at full intensity with a Sekonic C-800-U at 1 foot from the source in a blacked-out studio. Despite these considerations, it is important to remember that every light will be slightly different and so it is important to run tests on your own when possible.

For additional context, please read Part 1 if you have not already done so.

Reading TM-30 Vector Graphs

Areas pulled toward the inside of the reference circle represent deficiencies in accurate color rendering that causes desaturation along the corresponding hues.

Areas pulled toward the inside of the reference circle represent deficiencies in accurate color rendering that causes desaturation along the corresponding hues.

The closer the red circle (the test source) lands along the black circle (reference source), the more accurately the source will render colors in the human vision system

Reading SPDs

Tungsten SPD shape

Daylight SPD shape

Deficient areas may be offset by increases in other wavelengths

While large drops in wavelength densities could indicate poor rendering abilities with these wavelengths, if the spectral response of the camera does not see these areas well, it will not make much impact.

Results

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ETC

Planckian Deviation

Source Four

50º Lens (ETC)

3200K

Tungsten Halogen

3007

L218 1/8 CTB

0

-----

0.4364

x

0.4038

y

0

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

98

CRI -

99.5

TLCI -

100

Spectral Power Distribution

ETC

Planckian Deviation

Source Four

26º Lens (ETC)

3200K

Tungsten Halogen

3007

L218 1/8 CTB

0

-----

0.4364

x

0.4038

y

0

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

98

CRI -

99.5

TLCI -

100

Spectral Power Distribution

Mole-Richardson

Planckian Deviation

1K "Mickey"

Reflector - Flood

3200K

Tungsten Halogen

3048

L218 1/8 CTB

0.25M

-----

0.4342

x

0.4043

y

0.0005

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

99

CRI -

99.7

TLCI -

100

Spectral Power Distribution

ARRI

Planckian Deviation

650 T

Fresnel - Flood

3200K

Tungsten Halogen

3047

L218 1/8 CTB

0

-----

0.4338

x

0.4034

y

0.0001

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

98

CRI -

99.6

TLCI -

100

Spectral Power Distribution

Mole-Richardson

Planckian Deviation

2K "Baby Junior"

Fresnel - Flood

3200K

Tungsten Halogen

3280

-----

0.25M

-----

0.4185

x

0.3974

y

0.0002

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

95

CRI -

99.8

TLCI -

100

Spectral Power Distribution

Mole-Richardson

Planckian Deviation

1K "Baby"

Fresnel - Spot

3200K

Tungsten Halogen

3209

-----

0.25M

-----

0.4229

x

0.399

y

0.0001

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

96

CRI -

99.9

TLCI -

100

Spectral Power Distribution

Mole-Richardson

Planckian Deviation

2K "Junior"

Fresnel - Spot

3200K

Tungsten Halogen

3235

-----

0.25M

-----

0.4215

x

0.3988

y

0.0003

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

96

CRI -

99.9

TLCI -

100

Spectral Power Distribution

Mole-Richardson

Planckian Deviation

1K "Mickey"

Reflector - Spot

3200K

Tungsten Halogen

3048

L218 1/8 CTB

0.25M

-----

0.4342

x

0.4043

y

0.0005

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

99

CRI -

99.7

TLCI -

100

Spectral Power Distribution

ARRI

Planckian Deviation

650 T

Fresnel - Spot

3200K

Tungsten Halogen

3047

L218 1/8 CTB

0

-----

0.4338

x

0.4034

y

0.0001

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

98

CRI -

99.6

TLCI -

100

Spectral Power Distribution

ETC

Planckian Deviation

Source Four

19º Lens (ETC)

3200K

Tungsten Halogen

3007

L218 1/8 CTB

0

-----

0.4364

x

0.4038

y

0

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

98

CRI -

99.5

TLCI -

100

Spectral Power Distribution

Mole-Richardson

Planckian Deviation

2K "Baby Junior"

Fresnel - Spot

3200K

Tungsten Halogen

3280

-----

0.25M

-----

0.4185

x

0.3974

y

0.0002

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

95

CRI -

99.8

TLCI -

100

Spectral Power Distribution

Mole-Richardson

Planckian Deviation

1K "Baby"

Fresnel - Flood

3200K

Tungsten Halogen

3209

-----

0.25M

-----

0.4229

x

0.399

y

0.0001

⊿uv

TM-30

100

100

Rg

100

SSI Tung. or D55

96

CRI -

99.9

TLCI -

100

Spectral Power Distribution

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Chicago, IL 60608
Tel: 773-940-2654

bookings@lightmodrents.com

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