Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Image
CM_IMAGE_FILENAMEParameter: Film Aspect
CM_RDATA_FILMASPECTParameter: CM_RDATA_FILMPRESET
CM_RDATA_FILMPRESETParameter: Image Scale
CM_IMAGE_VIEW_SCALEParameter: Image Offset X
CM_IMAGE_VIEW_OFFSET_XParameter: Image Offset Y
CM_IMAGE_VIEW_OFFSET_YParameter: Brightness
CM_IMAGE_BRIGHTNESSParameter: Full Image
CM_IMAGE_VIEW_FULLParameter: Match Width
CM_IMAGE_MATCH_VIEW_WIDTHParameter: Match Height
CM_IMAGE_MATCH_VIEW_HEIGHTParameter: Solve Mode
PH_LENS_DISTORT_SOLVE_MODEParameter: Add Line
ADD_NEW_LINEParameter: Delete Selected Line
DELETE_SELECTED_LINE_MANUALParameter: Add N-Point Line
ADD_NEW_TRIPLINEParameter: Auto Solve
PH_LENS_DISTORT_AUTO_SOLVEParameter: Delete Selected Line
DELETE_SELECTED_LINE_AUTOMATICParameter: Lens Distortion Model
PH_LENS_DISTORT_MODELParameter: Experimental
PH_LENS_M1_PARAMParameter: Quadratic
PH_LENS_M2_QUADRATIC_DISTORTIONParameter: Cubic
PH_LENS_M2_CUBIC_DISTORTIONParameter: X Offset
PH_LENS_A3_OFFXParameter: Y Offset
PH_LENS_A3_OFFYParameter: Quadratic
PH_LENS_M3_C2Parameter: U Degree 2
PH_LENS_M3_U1Parameter: V Degree 2
PH_LENS_M3_V1Parameter: Quartic
PH_LENS_M3_C4Parameter: U Degree 4
PH_LENS_M3_U3Parameter: V Degree 4
PH_LENS_M3_V3Parameter: Phi Cylindric Direction
PH_LENS_M3_PHI_CYL_DIRParameter: Phi Cylindric Direction
PH_LENS_M3_PHI_CYL_DIRParameter: B Cylindric Bending
PH_LENS_M3_B_CYL_BENDParameter: X Offset
PH_LENS_A4_OFFXParameter: Y Offset
PH_LENS_A4_OFFYParameter: Quadratic
PH_LENS_M4_C2Parameter: Quartic
PH_LENS_M4_C4Parameter: Curvature X
PH_LENS_M4_XCRVParameter: Curvature Y
PH_LENS_M4_YCRVParameter: Anamorphic Squeeze
PH_LENS_M4_ASQZParameter: X Offset
PH_LENS_A5_OFFXParameter: Y Offset
PH_LENS_A5_OFFYParameter: Cx02
PH_LENS_M5_Cx02Parameter: Cy02
PH_LENS_M5_Cy02Parameter: Cx22
PH_LENS_M5_Cx22Parameter: Cy22
PH_LENS_M5_Cy22Parameter: Cx04
PH_LENS_M5_Cx04Parameter: Cy04
PH_LENS_M5_Cy04Parameter: Cx24
PH_LENS_M5_Cx24Parameter: Cy24
PH_LENS_M5_Cy24Parameter: Cx44
PH_LENS_M5_Cx44Parameter: Cy44
PH_LENS_M5_Cy44Parameter: Lens Rotation
PH_LENS_M5_ROTParameter: Lens Rotation
PH_LENS_M5_ROTParameter: Squeeze-X
PH_LENS_M5_XSQZParameter: Squeeze-Y
PH_LENS_M5_YSQZParameter: X Offset
PH_LENS_A6_OFFXParameter: Y Offset
PH_LENS_A6_OFFYParameter: Cx02
PH_LENS_M6_Cx02Parameter: Cy02
PH_LENS_M6_Cy02Parameter: Cx22
PH_LENS_M6_Cx22Parameter: Cy22
PH_LENS_M6_Cy22Parameter: Cx04
PH_LENS_M6_Cx04Parameter: Cy04
PH_LENS_M6_Cy04Parameter: Cx24
PH_LENS_M6_Cx24Parameter: Cy24
PH_LENS_M6_Cy24Parameter: Cx44
PH_LENS_M6_Cx44Parameter: Cy44
PH_LENS_M6_Cy44Parameter: Cx06
PH_LENS_M6_Cx06Parameter: Cy06
PH_LENS_M6_Cy06Parameter: Cx26
PH_LENS_M6_Cx26Parameter: Cy26
PH_LENS_M6_Cy26Parameter: Cx46
PH_LENS_M6_Cx46Parameter: Cy46
PH_LENS_M6_Cy46Parameter: Cx66
PH_LENS_M6_Cx66Parameter: Cy66
PH_LENS_M6_Cy66Parameter: X Offset
PH_LENS_A7_OFFXParameter: Y Offset
PH_LENS_A7_OFFYParameter: Quadratic
PH_LENS_M7_C2Parameter: Quartic
PH_LENS_M7_C4Parameter: Degree 6
PH_LENS_M7_C6Parameter: Degree 8
PH_LENS_M7_C8Parameter: Load Lens Profile
LD_LENS_LOAD_PROFILEParameter: Save Lens Profile
LD_LENS_SAVE_PROFILE