I noticed that in OV2 you can convert to tiff with exif or without. The without exif file let you choose between 8 or 16 bits, the non exif export does not. The exif export file size is smaller, 34.9 VS 69.7 MB's. So I'm guessing the exif export is only using 8 bits since I did not have the option to choose my bits. I was able to choose 16 bit on the non exif tiff export. My regular raw. orf files are generally in the 11 to 12MB range. Also is there any advantage in converting tiff to dng for LR use? Since the Olympus raw files are smaller are they only using 8 bits since I use the sRGB color space? I thought raw file use 16bits. Will changing in camera color space to Adobe RGB give me larger 16 bit raw files? I have always used the sRGB color space in my cameras even though I know Adobe RGB has a higher color gamut. Sorry for all the questions.