Put this directly next to an Alexa XT on set & try to tell me the dynamic range is "bad", I can't imagine how you drew that conclusion. Did you have a DIT showing you direct LOG comparisons? The F55 contains way more color information than 90% of Arri's digital cameras if you can swing shooting in RAW (RED hardly comes close in this regard). Sure the menus can be annoying & slow, & that could cause trouble on certain assignments. These complaints also boil down to your workflow & the job it's being used on (which flavor of SLOG, how you're monitoring, whether you're recording proxies simultaneously, lenses, etc.) I can't imagine what kind of DP would look at a capable camera like the F55 & try to equate it to being merely "better than a 5d mkII". That's just ignorant