in reply to Imager setting TIFF tags

Image::ExifTool seems quite performant in getting and setting tags and meta-information for all kind of image-formats.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James