Polarization & Malus Law Calculator vs ND Filter Exposure Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
Polarization & Malus Law Calculator
Calculates transmitted light intensity after passing through one or more polarizers using Malus's Law. Use it when designing optical systems, analyzing polarized filters, or studying light attenuation in physics labs.
- Answers
- Transmitted Intensity (W/m²)
- Inputs
- Initial Light Intensity, Polarizer Angle, Number of Polarizers
ND Filter Exposure Calculator
Calculate the correct long-exposure shutter speed when using one or more stacked ND filters. Essential for landscape and waterfall photographers who need to adjust for light reduction and film reciprocity failure.
- Answers
- Required Exposure Time (seconds)
- Inputs
- Base Shutter Speed, ND Filter Strength, Number of Stacked Filters, Reciprocity Failure Factor
At a glance
| Polarization & Malus Law Calculator | ND Filter Exposure Calculator | |
|---|---|---|
| Category | Optics | Photography |
| Answers | Transmitted Intensity | Required Exposure Time |
| Inputs | 3 | 4 |
| Result unit | W/m² | seconds |
When to use each
Calculates transmitted light intensity after passing through one or more polarizers using Malus's Law. Use it when designing optical systems, analyzing polarized filters, or studying light attenuation in physics labs.
Calculate the correct long-exposure shutter speed when using one or more stacked ND filters. Essential for landscape and waterfall photographers who need to adjust for light reduction and film reciprocity failure.