Correct, you need a preset. However, note that presets support wildcards. I only have the one preset posted above.
Given the wildcard functionality, when would you need to supply explicit text?
I have been worrying about this on the basis of how a lens or camera name should be set: Upper or lower case alpha? Spaces or no spaces? Commas included? ‘Mk II’, or ‘Mark II’ or ‘Mk 2’? And so on.
What really confuses me is that I see differences in the formatting between the names that appear in the Camera and Lens drop-down boxes in the lens correction module and what appears in image information and (possibly) what appears in the EXIF data. If I needed to put explicit data in the preset definition, which formatting should I use?