This question was already asked here
...but there were no satisfactory answers. However that was from a few years ago. Since that time we've had new restrictions put in on bringing laptop computers and cameras into the passenger cabin on flights from the ME to the US and UK, and there are heavy rumours that the US government is about to place such restrictions on all flights from Europe.
I travel for photography, so I routinely bring a pair of camera bodies (one for backup) and a bunch of lenses. (I also travel with a laptop) I've always brought them on board as carry-on. The total value of the gear I bring is typically $20K-30K, with maybe $6-10K of that my DSLR bodies. The travel insurance companies I've contacted won't sell me anywhere near that much insurance for checked luggage.
What do people currently do traveling on routes from the ME to the US and UK, for example?