I want to add my camera model to end of the file renaming string, however, I only wish to add the last letters of the camera.
For example eos 5d, eos 1dm2, eos 1dm3 - rather than Canon EOS 1D-MIII as {model} currently defines.
You could use Code Replacement to do this. You would create a UTF-8 text file like so: (where you see [tab], press the tab key in your text editor)
Canon EOS 5D[tab]eos 5d
Canon EOS 1D-MII[tab]eos 1dm2
Canon EOS 1D-MIII[tab]eos 1dm3
Then save the file. Next open up the Code Replacement dialog (Edit->Set Code Replacement...) and load your file.
Now when you rename, use this in your renaming string:
\{model}\
And when the model name is looked up, you abbreviated name will be used instead.
Also, if I wish to do a rename with _ underscores replacing spaces and hyphen, how would I do this? Is this possible.
No, this is not currently possible.
-Kirk