Batch scan is being used for several frames.
e.g. if you want to scan individual faces from a group photo.
ADF scan is being used for automated film and slide feeders.
It scans the images selected in the Overview dialog.
The settings are done in the current frame.
The automatic image adjustment for ADF(for highlights/shadows) can be activated in the preferences under auto
iSRD is the hardware sided infrared scratch and dust removal.
SRD is a software sided alternative which is for example used when scanning B&W film which can not be corrected using infrared.
kind regards,
Aren Ketelhohn-