Adding vignetting coefficients

[lucproc]

I need to add vignetting coefficients to a colour camera image. How do I do that?

[greybeard]

Which camera (make and model) and which type of image?

[lucproc]

It is a custom camera, part of a surveillance system and uses a Sony IMX342 sensor. Not sure what type of image - does CFA_TYPE_BAYER_RG or PIXEL_FORMAT_PACKED_12_BIT make sense?

[StarGeek]

I believe nearly all the vignetting type tags only exist in the camera specific Makernotes, with only a couple non-standard tags in EXIF that are specific to Sony ARW files.

MakerNotes tags cannot be created, only edited if they already exist. There isn't a standard place to put such data that can be read by programs such as LightRoom.

[lucproc]

ok thanks, yes the vignetting tags don't exist so I guess I'm limited by the camera type.