Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Photography
Lens Focal Length Comparison Calculator
Compare how two lens-and-sensor combinations deliver equivalent fields of view. Use it when switching camera systems or renting a lens to match your existing look.
Fill in the required fields to see your result.
Photography
Studio Lighting Ratio Calculator
Determine the exact fill light power needed to achieve a target lighting ratio in studio photography. Use this when balancing key and fill lights for portraits or product shots.
Fill in the required fields to see your result.
Key differences
| Lens Focal Length Comparison Calculator | Studio Lighting Ratio Calculator | |
|---|---|---|
| Category | Photography | Photography |
| Inputs required | 4 | 4 |
| Result | Field of View Ratio (x) | Required Fill Light Power (W) |
| What it does | Compare how two lens-and-sensor combinations deliver equivalent fields of view. Use it when switching camera systems or renting a lens to match your existing look. | Determine the exact fill light power needed to achieve a target lighting ratio in studio photography. Use this when balancing key and fill lights for portraits or product shots. |