Hmm, don't think the GX8 has that one—must be a GH-only mode. It does have a "chrome" iirc which obviously looks nothing like slide film. TBH I don't rate Panasonic's jpeg modes very highly in anything but bright sunlight, which is quite annoying as a Panasonic user who prefers to shoot jpegs. The only camera I have that I like the jpegs from is the Sony A900 and that's a bit heavy to carry for long. Despite the faff of scanning and doing the white balance myself I'd much rather shoot film.