This last trip, I decided to not use a heavy kit, aiming to keep my bag flat and out of the way. Two primes (17/45) mounted on two cameras (EM5's), allowing fast and clean operation (no lens changes) and supporting clear vision.
For the most part it worked, but of course things come up you wish you prepared better for. I have never managed a crane in flight image. In the past I have had with me lenses up to 600mm (equiv. to FF), but opportunities did not present. No big deal really as that is not my thing anyway.
So, what happens when not one, not two, but half a dozen cranes fly over you at helpful intervals while they build their nests and you only have a 45mm lens on? Well, you have a crack.
Heavily cropped and against a bland sky (one of only few this trip), but ok I guess. The EM5's grabbed the high contrast subject quickly and I shot without hesitation. This is important because the EM5 will acquire focus quickly, but will not track.