If you have selected CR2 in the startup assistant (when creating your database), IMatch should have created a buddy file rule for CR2.
Do you have this? Does it not work?
IMatch uses regular expressions to be able to handle all the various file naming schemes applications and users come up with.
While looking a bit scary at first, they are real problem solvers. The IMatch help as a dedicated section (
Regular Expressions) which explains them. This help topic also has pointers to online resources and tools.
The default for CR2 is
Master Expression
\.(cr2)$This expression means "all file names ending with .cr2".
The link expression is
^(_*{name})[+\-_]*[0-9|a-z]*\.(jpg|jpeg|dng|tif)$This grabs all files starting with the same name as the master file and any number of following digits or characters or +-_
When I test the default for CR2 with your file names using the built-in test tool (
Testing Expressions) for file relations, all are matched. So it should work out-of-the-box, with no need for you to change anything.