Here's my dilemma: I shoot with Olympus OMD mirrorless cameras. There are times I switch from native 4:3 to 16:9 aspect ratio when shooting raw stills for inclusion into audio slideshows or videos. The problem I can't seem to overcome is Lightroom (5.7 and 6) wants to crop my RAW files to 16:9 and I can't find a way to keep it from doing that. I want to control that myself. Is there an obscure setting some place that prevents Lightroom from doing the crop on ingest?