For example, photo #3 is titled as "James Moir, Blacksmith, Annat", and the only person meeting that description (that I can find) was born in 1793. Now according to Wikipedia, the first photograph taken in Scotland was in 1842, so even if the photo was taken then, James would have been 49, and the photo shows a man surely younger than that.
As an aid to trying to check the identifications, I was wondering if anyone here was sufficiently familiar with clothing of generally poor small farmers and blacksmiths in the period 1840-1900, and was thus able to make a guess as to the rough date of some the photographs, please? Or would it not have changed much over this period?
Here are two photos to start with:

This is the photo I referred to. He looks to me to be about 30, and I'm not sure I think he looks like a blacksmith.

This couple is said to be George Moir (1790-1871), blacksmith at Little Ardo in Methlick, and his wife Margaret Calder (1792-1866). They look to me to be about 50-55, and she had had about 13 children by then.
Does anyone have any thoughts please?