Hi Bogdan,

"$tag=~/xxx/" is a Perl regular express that evaluates to true if the string "xxx" is inside the value of tag. This is different than "eq" which tests for string equality.

You can use $tag=~/\btir\b/. The \b in a regular expression represents a word boundary, so with this addition strings like "stiri" won't match.

In Windows, the outside quotes must be double. So use this:

exiftool -ApertureValue -if "$make eq 'Canon'" *.jpg

- Phil