At least one mistery is solved… although I still can’t get an explanation for reason.
Epson’s Raw File (abbreviated accordingly, ERF) files are quite troublesome. The main raw editing application I used, DxO Optics Pro does not support this file, which made lots of things unconvenient. Nowadays, I use ACDSee Pro because it supports the raw file and have some neat features.
Epson also supplied their own Epson Photolier application. The function is of course very limited, but I rarely need more than simple adjustments anyway.
But there’s a slight problem.
Most of the options are frozen. I don’t change much, other than rotating, push-pull exposure, correcting white balance and setting the saturation (usually tuning it down). Saturation & contrast are some of the options that are locked in the 1.22 version. This made the application mostly useless other than for batch converting to JPG. Which is a shame, because the file from Photolier looks punchier than from ACDSee.
Tried again with older version (1.21) from Epson Europe’s support page.
This time it works… probably language problem, but I don’t have any problem with other Japanese language problem.