Lighting comparisons

Decision-support comparisons for lighting output, appearance, distribution and exposure terms before a calculator or table owns the number.

Lamp and load changes

Retrofit checks where output, connected load and annual energy need separate records.

Calculation direction

Choose the calculator path before a target-light allowance, known-output check or measured-light comparison is entered.

Colour appearance

CCT, colour-rendering evidence and surface appearance before warm, neutral or cool white assumptions are locked.

Fitting type and distribution

Distribution, glare and set-out differences for downlights, panels and room lighting records.

Protection rating

IP44 and IP65 language for wet-area-adjacent, exterior and luminaire-marking notes.