What is lumen per square foot per steradian?

It is a non-SI unit of luminance measuring luminous flux per unit area per unit solid angle, commonly used in U.S. customary systems and equivalent to candelas per square foot.

Why convert lumen/square foot/steradian to millilambert?

Conversion helps translate measurements from U.S. customary luminance units to legacy photometric units used in fields like cinematography and imaging for analysis and calibration.

Are millilambert units still widely used?

Millilambert is largely obsolete and replaced by candela per square meter in many applications but remains relevant in certain imaging and broadcast contexts.

How to Convert from Lumen/square foot/steradian to Millilambert [mL]?

Convert luminance values from lumen per square foot per steradian to millilambert units using our easy online converter. Understand applications, features, and limitations of this unit conversion.

Lumen/square foot/steradian

Millilambert [mL]

Please check your input. It must be a valid numeric value.

Lumen/square foot/steradian to Millilambert [mL] Conversion Table

Lumen/square foot/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/square foot/steradian to Millilambert [mL] Conversion Table
Lumen/square foot/steradian	Millilambert [mL]

Explore More Luminance Units Converter

What Is This Tool?

This converter transforms luminance measurements expressed in lumen per square foot per steradian, a non-SI brightness unit used mainly in U.S. customary systems, into millilambert [mL], a legacy photometric unit popular in imaging and cinematography.

How to Use This Tool?

Enter the luminance value in lumen per square foot per steradian.
Select the input and output units accordingly.
Click convert to get the equivalent measurement in millilambert.

Key Features

Converts from lumen/square foot/steradian to millilambert [mL].
Supports luminance values used in architectural lighting, outdoor displays, and imaging industries.
Enables bridging of U.S. customary and legacy photometric measurement systems.

Examples

2 lumen/square foot/steradian converts to approximately 6.763 millilambert.
0.5 lumen/square foot/steradian converts to approximately 1.691 millilambert.

Common Use Cases

Specifying brightness for signs, billboards, and outdoor displays using foot-based units.
Evaluating glare control and visual comfort in architectural lighting projects.
Converting legacy luminance data in cinematography and broadcast engineering for analysis or calibration.

Tips & Best Practices

Ensure consistent unit usage across your project to avoid calculation errors.
Use this conversion to facilitate comparison of luminance values across different measurement systems.
Confirm the context and requirements before applying converted values due to the legacy status of millilambert.

Limitations

Lumen per square foot per steradian is a non-SI unit tied to imperial measurements, limiting its scientific applications globally.
Millilambert is largely outdated and often replaced by candela per square meter in modern contexts.
Converting between these units requires careful handling to maintain accuracy across mixed unit systems.

Frequently Asked Questions

What is lumen per square foot per steradian?: It is a non-SI unit of luminance measuring luminous flux per unit area per unit solid angle, commonly used in U.S. customary systems and equivalent to candelas per square foot.
Why convert lumen/square foot/steradian to millilambert?: Conversion helps translate measurements from U.S. customary luminance units to legacy photometric units used in fields like cinematography and imaging for analysis and calibration.
Are millilambert units still widely used?: Millilambert is largely obsolete and replaced by candela per square meter in many applications but remains relevant in certain imaging and broadcast contexts.

Key Terminology

Lumen/square foot/steradian: A non-SI luminance unit expressing luminous flux per area per solid angle, used mainly with U.S. customary units.
Millilambert [mL]: A non-SI luminance unit equal to one thousandth of a lambert, used historically in imaging and cinematography.
Luminance: The measure of the brightness of light emitted, reflected, or transmitted from a surface in a given direction.

Quick Knowledge Check

What does lumen/square foot/steradian measure?

Electrical current intensity

Luminance in a non-SI customary system

Weight of a material

To which field is millilambert mainly related?

Cinematography and imaging

Hydraulic engineering

Acoustic measurement

What is a key limitation of using lumen/square foot/steradian?

It is an SI unit favored worldwide

It's tied to imperial area measurements limiting global scientific use

It measures temperature instead of luminance

Share Us

Similar Calculators

Online Temperature Interval Units Converter Online Temperature Units Converter Online Heat Flux Density Units Converter Online Volume Dry Units Converter Online Heat Density Units Converter