Available in 3ds Max 2011 and higher.
<adsk_Light_Photometric>.shadowOn: boolean
<adsk_Light_Photometric>.distribution: integer
<adsk_Light_Photometric>.lightColor: fRGBA color
<adsk_Light_Photometric>.filterColor: fRGBA color
<adsk_Light_Photometric>.intensity: float
<adsk_Light_Photometric>.cutoff_start_farattenuation: float
<adsk_Light_Photometric>.cutoff_end_farattenuation: float
<adsk_Light_Photometric>.shadowCol: fRGBA color
<adsk_Light_Photometric>.shadowDensity: float
<adsk_Light_Photometric>.useShadowColMap: boolean
<adsk_Light_Photometric>.shadowColMap : filename
<adsk_Light_Photometric>.Image_Frame_Number : integer
<adsk_Light_Photometric>.lightAffectShadowCol: boolean
<adsk_Light_Photometric>.atmosShadowOn: boolean
<adsk_Light_Photometric>.atmosShadowOpacity: float
<adsk_Light_Photometric>.atmosShadowColAmnt: float
<adsk_Light_Photometric>.contrast: float
<adsk_Light_Photometric>.softDiffEdges: float
<adsk_Light_Photometric>.diffuse: boolean
<adsk_Light_Photometric>.specular: boolean
<adsk_Light_Photometric>.ambientOnly: boolean
<adsk_Light_Photometric>.projMapOn: boolean
<adsk_Light_Photometric>.projMap : filename
<adsk_Light_Photometric>.traceTransparent: integer
<adsk_Light_Photometric>.visibleBrightness: float
<adsk_Light_Photometric>.hotSpot: float
<adsk_Light_Photometric>.fallOff: float
<adsk_Light_Photometric>.lightProfile: string
<adsk_Light_Photometric>.webTransform: matrix3
<adsk_Light_Photometric>.physicalScale: float
<adsk_Light_Photometric>.meterScale: float
<adsk_Light_Photometric>.webHasSymmetry: boolean
<adsk_Light_Photometric>.forceAsLinearLight: boolean
<adsk_Light_Photometric>.exclusionList: boolean array
<adsk_Light_Photometric>.on_connected: boolean
<adsk_Light_Photometric>.on_shader: texturemap
<adsk_Light_Photometric>.on_paramName: string
<adsk_Light_Photometric>.shadowOn_connected: boolean
<adsk_Light_Photometric>.shadowOn_shader: texturemap
<adsk_Light_Photometric>.shadowOn_paramName: string
<adsk_Light_Photometric>.distribution_connected: boolean
<adsk_Light_Photometric>.distribution_shader: texturemap
<adsk_Light_Photometric>.distribution_paramName: string
<adsk_Light_Photometric>.lightColor_connected: boolean
<adsk_Light_Photometric>.lightColor_shader: texturemap
<adsk_Light_Photometric>.lightColor_paramName: string
<adsk_Light_Photometric>.filterColor_connected: boolean
<adsk_Light_Photometric>.filterColor_shader: texturemap
<adsk_Light_Photometric>.filterColor_paramName: string
<adsk_Light_Photometric>.intensity_connected: boolean
<adsk_Light_Photometric>.intensity_shader: texturemap
<adsk_Light_Photometric>.intensity_paramName: string
<adsk_Light_Photometric>.cutoff_start_farattenuation_connected: boolean
<adsk_Light_Photometric>.cutoff_start_farattenuation_shader: texturemap
<adsk_Light_Photometric>.cutoff_start_farattenuation_paramName: string
<adsk_Light_Photometric>.cutoff_end_farattenuation_connected: boolean
<adsk_Light_Photometric>.cutoff_end_farattenuation_shader: texturemap
<adsk_Light_Photometric>.cutoff_end_farattenuation_paramName: string
<adsk_Light_Photometric>.shadowCol_connected: boolean
<adsk_Light_Photometric>.shadowCol_shader: texturemap
<adsk_Light_Photometric>.shadowCol_paramName: string
<adsk_Light_Photometric>.shadowDensity_connected: boolean
<adsk_Light_Photometric>.shadowDensity_shader: texturemap
<adsk_Light_Photometric>.shadowDensity_paramName: string
<adsk_Light_Photometric>.useShadowColMap_connected: boolean
<adsk_Light_Photometric>.useShadowColMap_shader: texturemap
<adsk_Light_Photometric>.useShadowColMap_paramName : string
<adsk_Light_Photometric>.shadowColMap_connected : boolean
<adsk_Light_Photometric>.shadowColMap_shader : texturemap
<adsk_Light_Photometric>.shadowColMap_paramName : string
<adsk_Light_Photometric>.lightAffectShadowCol_connected: boolean
<adsk_Light_Photometric>.lightAffectShadowCol_shader: texturemap
<adsk_Light_Photometric>.lightAffectShadowCol_paramName: string
<adsk_Light_Photometric>.atmosShadowOn_connected: boolean
<adsk_Light_Photometric>.atmosShadowOn_shader: texturemap
<adsk_Light_Photometric>.atmosShadowOn_paramName: string
<adsk_Light_Photometric>.atmosShadowOpacity_connected: boolean
<adsk_Light_Photometric>.atmosShadowOpacity_shader: texturemap
<adsk_Light_Photometric>.atmosShadowOpacity_paramName: string
<adsk_Light_Photometric>.atmosShadowColAmnt_connected: boolean
<adsk_Light_Photometric>.atmosShadowColAmnt_shader: texturemap
<adsk_Light_Photometric>.atmosShadowColAmnt_paramName: string
<adsk_Light_Photometric>.contrast_connected: boolean
<adsk_Light_Photometric>.contrast_shader: texturemap
<adsk_Light_Photometric>.contrast_paramName: string
<adsk_Light_Photometric>.softDiffEdges_connected: boolean
<adsk_Light_Photometric>.softDiffEdges_shader: texturemap
<adsk_Light_Photometric>.softDiffEdges_paramName: string
<adsk_Light_Photometric>.diffuse_connected: boolean
<adsk_Light_Photometric>.diffuse_shader: texturemap
<adsk_Light_Photometric>.diffuse_paramName: string
<adsk_Light_Photometric>.specular_connected: boolean
<adsk_Light_Photometric>.specular_shader: texturemap
<adsk_Light_Photometric>.specular_paramName: string
<adsk_Light_Photometric>.ambientOnly_connected: boolean
<adsk_Light_Photometric>.ambientOnly_shader: texturemap
<adsk_Light_Photometric>.ambientOnly_paramName: string
<adsk_Light_Photometric>.projMapOn_connected: boolean
<adsk_Light_Photometric>.projMapOn_shader: texturemap
<adsk_Light_Photometric>.projMapOn_paramName : string
<adsk_Light_Photometric>.projMap_connected : boolean
<adsk_Light_Photometric>.projMap_shader : texturemap
<adsk_Light_Photometric>.projMap_paramName : string
<adsk_Light_Photometric>.traceTransparent_connected : boolean
<adsk_Light_Photometric>.traceTransparent_shader : texturemap
<adsk_Light_Photometric>.traceTransparent_paramName : string
<adsk_Light_Photometric>.visibleBrightness_connected : boolean
<adsk_Light_Photometric>.visibleBrightness_shader : texturemap
<adsk_Light_Photometric>.visibleBrightness_paramName : string
<adsk_Light_Photometric>.hotSpot_connected: boolean
<adsk_Light_Photometric>.hotSpot_shader: texturemap
<adsk_Light_Photometric>.hotSpot_paramName: string
<adsk_Light_Photometric>.fallOff_connected: boolean
<adsk_Light_Photometric>.fallOff_shader: texturemap
<adsk_Light_Photometric>.fallOff_paramName: string
<adsk_Light_Photometric>.webTransform_connected: boolean
<adsk_Light_Photometric>.webTransform_shader: texturemap
<adsk_Light_Photometric>.webTransform_paramName: string
<adsk_Light_Photometric>.physicalScale_connected: boolean
<adsk_Light_Photometric>.physicalScale_shader: texturemap
<adsk_Light_Photometric>.physicalScale_paramName: string
<adsk_Light_Photometric>.meterScale_connected: boolean
<adsk_Light_Photometric>.meterScale_shader: texturemap
<adsk_Light_Photometric>.meterScale_paramName: string
<adsk_Light_Photometric>.webHasSymmetry_connected: boolean
<adsk_Light_Photometric>.webHasSymmetry_shader: texturemap
<adsk_Light_Photometric>.webHasSymmetry_paramName: string
<adsk_Light_Photometric>.forceAsLinearLight_connected: boolean
<adsk_Light_Photometric>.forceAsLinearLight_shader: texturemap
<adsk_Light_Photometric>.forceAsLinearLight_paramName: string
<adsk_Light_Photometric>.TheList: maxObject array
<adsk_Light_Photometric>.Shader_Version: integer