What is a foot-lambert?

Foot-lambert (fL) is an imperial unit measuring luminance as luminous intensity per unit projected area, commonly used in cinema and home-theater brightness specifications.

What does apostilb measure?

Apostilb (asb) is a historical luminance unit that quantifies luminous intensity from surfaces per unit projected area, often found in older photometric references.

Why convert foot-lambert to apostilb?

Conversion allows translation between imperial and historical luminance units to maintain compatibility in display calibration and lighting assessments involving legacy data.

How to Convert from Foot-lambert [fL] to Apostilb?

Easily convert luminance values from foot-lambert (fL) to apostilb (asb) using this straightforward unit conversion tool designed for cinema, display calibration, and lighting applications.

Foot-lambert [fL]

Apostilb

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

Foot-lambert [fL] to Apostilb Conversion Table

Foot-lambert [fL]	Apostilb

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.

Foot-lambert [fL] to Apostilb Conversion Table
Foot-lambert [fL]	Apostilb

Explore More Luminance Units Converter

What Is This Tool?

This online converter transforms luminance measurements from foot-lambert, an imperial unit, into apostilb, a historical photometric unit. It aids users working with legacy and mixed measurement systems in cinema, lighting, and display calibration.

How to Use This Tool?

Input the luminance value measured in foot-lambert (fL)
Select 'foot-lambert' as the original unit and 'apostilb' as the target unit
Submit the values to perform the conversion instantly
View the converted result expressed in apostilb (asb)

Key Features

Converts foot-lambert (fL) to apostilb (asb) based on accurate conversion rates
Supports luminance unit translation relevant to cinema, display, and lighting industries
Ideal for users handling historical data and legacy photometric specifications
Simple and user-friendly browser-based tool requiring no installation

Examples

Converting 2 fL results in approximately 21.5278208334 apostilb
Converting 0.5 fL yields about 5.38195520835 apostilb

Common Use Cases

Converting luminance for cinema screen and home-theater brightness calibration
Translating display or projection system specifications between imperial and historical units
Analyzing historical photometric data and calibrating imaging equipment with legacy units
Assessing luminance of diffusely reflecting surfaces in lighting engineering studies

Tips & Best Practices

Ensure to input values using correct unit notation for accurate conversion
Use this tool to verify legacy luminance data aligns with modern calibration needs
Recognize that apostilb, being a historical unit, is best suited for legacy or reference scenarios
Cross-check results when precision is critical due to unit standard differences

Limitations

Apostilb is a non-SI, historical unit which may not conform to modern measurement standards
Conversion mainly serves legacy data compatibility rather than current standardized practices
Differences between unit definitions can lead to slight discrepancies in precision or interpretation

Frequently Asked Questions

What is a foot-lambert?: Foot-lambert (fL) is an imperial unit measuring luminance as luminous intensity per unit projected area, commonly used in cinema and home-theater brightness specifications.
What does apostilb measure?: Apostilb (asb) is a historical luminance unit that quantifies luminous intensity from surfaces per unit projected area, often found in older photometric references.
Why convert foot-lambert to apostilb?: Conversion allows translation between imperial and historical luminance units to maintain compatibility in display calibration and lighting assessments involving legacy data.

Key Terminology

Foot-lambert [fL]: An imperial unit of luminance measuring luminous intensity per unit projected area, mainly used in cinema and display brightness contexts.
Apostilb [asb]: A non-SI, historical unit of luminance equal to 1/π candela per square metre, used in older photometric and cinematographic specifications.
Luminance: A photometric measure of the luminous intensity emitted or reflected from a surface per unit area in a specific direction.

Quick Knowledge Check

Which unit is used primarily in imperial luminance measurement?

Apostilb

Foot-lambert

Candela per square meter

What is the apostilb best described as?

A modern SI unit

A non-SI historical luminance unit

A unit of luminous flux

What is a common use case for converting foot-lambert to apostilb?

To analyze current SI unit lighting data

To translate legacy photometric specifications

To convert area measurements

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