What does lumen per square meter per steradian measure?

It measures luminance, indicating the luminous intensity emitted or reflected from a surface per unit area into a unit solid angle.

Why use millilambert instead of SI units?

Millilambert is used in specific industries like cinematography and imaging where legacy luminance units are still common.

Can I convert millilambert back to lumen/sq. meter/steradian?

Yes, but this tool specifically converts from lumen/sq. meter/steradian to millilambert; inverse conversion follows reciprocal calculations.

How to Convert from Lumen/sq. meter/steradian to Millilambert [mL]

Learn how to convert luminance measurements from lumen per square meter per steradian to millilambert, a legacy luminance unit used in imaging and cinematography.

Lumen/sq. meter/steradian

Millilambert [mL]

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Lumen/sq. meter/steradian to Millilambert [mL] Conversion Table

Lumen/sq. meter/steradian	Millilambert [mL]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Lumen/sq. meter/steradian to Millilambert [mL] Conversion Table
Lumen/sq. meter/steradian	Millilambert [mL]

Explore More Luminance Units Converter

What Is This Tool?

This converter enables you to translate luminance values measured in lumen per square meter per steradian, an SI-based unit, into millilambert, a non-SI unit used mainly in cinematography and imaging fields.

How to Use This Tool?

Enter the luminance value in lumen per square meter per steradian
Select the source unit as lumen/sq. meter/steradian
Choose millilambert [mL] as the target unit
Click convert to see the equivalent luminance in millilambert

Key Features

Converts luminance from lumen/sq. meter/steradian to millilambert [mL]
Ideal for use in display brightness, imaging labs, and broadcast engineering
Browser-based and easy to use without installation
Helps bridge the gap between modern SI units and legacy photometric units

Examples

Converting 5 lumen/sq. meter/steradian results in approximately 1.5708 millilambert
10 lumen/sq. meter/steradian converts to roughly 3.1416 millilambert

Common Use Cases

Specifying display and projector screen brightness in cinematography
Characterizing luminance of photographic prints and film in imaging labs
Converting legacy luminance data to SI units for calibration or analysis
Ensuring appropriate visible brightness and reducing glare in lighting design

Tips & Best Practices

Use this tool to translate SI luminance values into industry-specific units for compatibility
Confirm unit selections carefully to ensure accurate conversion results
Be aware of the legacy nature of millilambert and consider specifying SI units when possible
Use calibrated measurement equipment for precise luminance data

Limitations

Millilambert is a non-SI, CGS-derived and largely obsolete unit
Conversions may introduce inconsistencies when interfacing with SI-based systems
Precision depends on careful calibration of photometric instruments
Millilambert may be unfamiliar outside specialized fields, requiring additional explanation

Frequently Asked Questions

What does lumen per square meter per steradian measure?: It measures luminance, indicating the luminous intensity emitted or reflected from a surface per unit area into a unit solid angle.
Why use millilambert instead of SI units?: Millilambert is used in specific industries like cinematography and imaging where legacy luminance units are still common.
Can I convert millilambert back to lumen/sq. meter/steradian?: Yes, but this tool specifically converts from lumen/sq. meter/steradian to millilambert; inverse conversion follows reciprocal calculations.

Key Terminology

Lumen/sq. meter/steradian: An SI unit of luminance expressing luminous intensity emitted or reflected per unit area into a unit solid angle.
Millilambert (mL): A non-SI unit of luminance equal to one thousandth of a lambert, used mainly in imaging and cinematography.
Luminance: The measure of luminous intensity per unit projected area per unit solid angle indicating perceived brightness.

Quick Knowledge Check

What does lumen per square meter per steradian quantify?

Amount of light energy emitted per second

Luminous intensity per unit area per unit solid angle

Color temperature of a light source

What is a common use for millilambert?

Measuring electrical current

Specifying luminance in cinematography

Determining sound intensity

What is an important limitation of millilambert?

It is widely used in all scientific fields

It is a non-SI and largely obsolete unit

It measures temperature rather than luminance

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