We currently have lens and lenses tags. "Lens" seems to be more used, and yesterday I've tried moving ~5 questions from "lenses" to "lens", but "lenses" tags shows up again, and I guess it makes more sense to use it, since some questions deal with lens comparisons and singular does not make sense there. Should I try to move all "lens" to "lenses", or is there some other way to handle this?
I think it should be lenses only. Having only one tag keeps all lens related questions together and in my opinion having it plural makes more sense since the questions are after all about lenses, some only about one but together plural.
This is really a question of singular verses plural tags.
Stackoverflow has tag synonyms to link tags that are considered the same.
Perhaps we should just wait a while and see which is naturally more popular? What people tend to tag will also be what people tend to search for...
I guess it depends on what the question is about. If it is a question about a specific single lens, then the lens tag is appropriate. However, if the question has to do with a variety of lenses, the lenses tag is more appropriate. Despite the fact that they are similar, they are not identical, and have different meanings.