So I had to left the 600mm F/4 behind. Peru is one of those countries that impose random rules on electronics. It means that if they feel like it, they can believe that I am a commercial photographer and confiscated my lens and convince me easily to pay a hefty fine. So I decided against it. I'll have to do with the 300mm f/2.8, which a fantastic lens but a tad short. On the plus side, the 600mm won't stand a chance to get damaged...or got decent shot.
The 300mm f/2.8 makes a 450mm f/2.8 on the D300 and D800 crop mode. I'll try to get a 1.4TCEIII to get a sweet 630mm f/4 VR. 900mm f/5.6 would be possible, so maybe I'll get a 2xTC and keep the brand new 600mm f/4 VRII safe in Canada for future trips in Alaska.
Oh well. Live and learn. Flying to Ecuador with five digits lens sounds complicated as well. The easiest way to bring a long telephoto lens sounds to be via Santiago de Chile.
There are just too many stories on the internet of the SUDAT in Peru confiscating DSLRs and len. It's already extremely stressful to g