I am having trouble trying to figure out how to select a specific Canon:LensType tag. If I use the "-a" option along with "-Canon:LensType" there a three tags returned with the lens type information. The data in the Tag IDs 0x0016 & 0x0112 is what I am after and not the data in Tag ID 0x0095. However, if I omit the "-a" switch only Tag ID 0x0095 is extracted. Tag IDs 0x0016 & 0x0112 contain integer values and use a lookup to obtain the string value but Tag ID 0x0095 is a string value that is not as complete or formatted well. How can a specfically extract the value for Canon:LensType Tag ID 0x0016 or 0x0112?

So, if I understand this correctly I will need to create a user-defineg tag that behaves exactly like one of the existing LensType tags but use a unique name so that I am able to reference that tag id. For instane I would basically copy what is defined for Tag ID 0x0016 and change the "Name" to "MyLens".

Thank you for the confirmation Phil and thanks to Bogdan for the idea/thread pointer. I got this working last night and overrode the 0x0016 LensType value as a user defined tag. Although I must admit my PERL is a bit rusty and could not figure out how to reference the existing canonLensType hash for PrintConv in my user defined tag, so I just set PrintConv equal to an inline hash ie. PrintConv =&rt; { num, lens string, .....}