Re: Fuji Raw File Converter EX, several issues
I can't answer all your questions and I'm doing this from memory, so please forgive any accuracy problems.
EX and LX - do you mean EX and LE? If so, EX is better, more control - LE just converts using camera defaults.
Changing output directory? Nope, can't be done (in Fuji software) - A real issue, I think.
Initialize, Load and Save buttons - Initialize resets all conversion options to "as shot" or "camera setting"
Load will load a specific set of conversion options (including custom tone curves) into the converter and convert using those settings. Save saves your conversion options so that you can load them later
Don't know about Photo Mechanic - hopefully??!!??
Have you tried Bibble? It converts Fuji RAW with far more options - some love it, some not so much. Me? I think Bibble is pretty good, but a little buggy, and I still get the highest quality conversions with the Fuji software in spite of all its flaws.
I wish C1DSLR would add Fuji RAW to its code base - might not be enough money in it for them, though.