Short background, almost done liquidating 3 Nikon D500/600mm f4/500mm f5.6 PF/300mm f4 PF/bunch-of-other-stuff. Saw the M1X in action, tested for a weekend on "fast-moving-subjects" and was amazed at how close it seems to be to the D500 in handling. When in the field I commonly carry 2 D500's, 600mm f4, another lens on 2nd body, tripod, gimbal head, over 20lbs easy I'm too lazy to add it up closer. With 2 M1x, 300f4, 40-150 f2.8 I can shed a lot of weight, and at 69 years old, that makes the walking a lot easier. The purpose of this thread is to ask for advice/insight/help in camera setup, quirks, things to avoid, etc. Basically I want to absorb all the knowledge you have learning this system so I don't have to do the hard part of learning. I am going to link to a different thread and a post by masayoshi: Very Helpful Info, for an example of what I am looking for. Thanks in advance, especially if I forget to thank you individually. Hopefully this information will be helpful to others as well.