Conversions can be done either with the "->" conversion operator or with the equivalent "convert" function. The function has three parameters: a quantity, a unit to convert from and a unit to convert to. Likewise the conversion operator uses three values: the quantity and unit to convert from are placed on the left side of the operator while the unit to convert to goes to the right side.
The basic unit of luminance is the candela per square meter (cdm2 or nit). All units of luminance are expressed in terms of this base unit and so measurements can be converted from any one of the following units to any other.
10 cdm2 -> apostilb = 31.415927
convert(10; nit; blondel) = 31.415927
10 nit -> lambert = 0.0031416
convert(10; cdm2; lambert) = 0.0031416
10 cdm2 -> stilb = 0.001
convert(10; cdm2; stilb) = 0.001
10 apostilb -> candela = 3.1830989
convert(10; blondel; candela) = 3.1830989
10 lambert -> candela = 31,830.989
convert(10; lambert; candela) = 31,830.989
10 stilb -> candela = 100,000
convert(10; stilb; candela) = 100,000
10 stilb -> apostilb = 314,159.27
convert(10; stilb; apostilb) = 314,159.27
10 footLambert -> candela = 34.262591
convert(10; footLambert; candela) = 34.262591