Eli the fff files are smaller and save space. Other than that really not much difference. LR reads the fff files a little darker so I pull up the exposure a tiny bit to match the larger 3rf file. To get the fff I import into Phocus and they just sync the same input folder in LR. Others probably know a lot more about the difference in the files. Eleanor
I was wondering why you prefer the fff file format? Also, LR imports files in the 3fr format, so how do you get files in the fff format into LR?