What camera gear did you choose to take with? It’s always interesting to learn what professional photographers take with them on vacation.
First, I'm not a commercial photographer. I'm an amateur photographer who aspires to attain and maintain professional quality - though I did work on salary as a photographer for three months in 1987 touring Australia and photographing lighthouses.
I can answer your question about what I take on trips accurately because I always create a spreadsheet to determine baggage and carry-on weights. I am mainly moving from Nikon to Fuji for travel, though for a wildlife trip I would probably still take Nikon.
For my 2015 trip to Mauritius, Reunion, Madagascar, Falkland Islands, South Georgia and Atacama I mainly took Nikon. However, I wanted to shoot infrared in Madagascar and my infrared body is a Fuji so I also took an additional Fuji body for street photography. For Nikon I had D3s, D800, 14-24mm f2.8, Sigma 35mm f1.4, 85mm f1.4, Sigma 180mm f2.8 macro, 300mm f2.8, TC14E and TC20E III. For Fuji I took X-E2 IR, X-T1, 14mm f2.8, 35mm f1.4, 55-200mm f3.5-4.8 and X100s. My most used lens was 300mm f2.8 then 180mm f2.8.
For my recent trip to Uzbekistan, Istanbul, Athens, Thira, Crete, Andalusia, Barcelona, Oregon and Washington I took entirely Fuji gear: Two X-T2s, X-E2 IR (which this time I didn't use), Samyang 8mm f2.8 fisheye, 10-24mm f4, 23mm f2, 35mm f1.4, 56mm f1.2, 80mm f2.8 macro, 100-400 f4.5-5.6 and 1.4x TC. My most used lenses were 10-24mm and 100-400mm (fairly equal) and then 80mm macro.
You must have a trove of photos to share? I am surprised you could get in so many countries in just a few months! Was this a prearranged Odyssey by a tour company or you just drew your own lines on the map?
I took 8,000 exposures altogether, or 6,500 excluding partial duplicates from bracketing for exposure or focus or panorama (though not many panorama this time). I have so far posted 380 of these in 16 posts on my blog. These are in temporary posts usually with captions but no comments. I will return later and make more detailed posts with more images and explanations of historical and other context.
Here a links to those posts.
In all on my blog I have 900 posts, 14,000 images and 335,000 words.
Here is a page of my expeditions and you can click through to posts.
We spent 10 days in Uzbekistan, 2 or 3 in Istanbul, Athens and Thira, 9 in Crete, 4 in Andalusia, 3 in Barcelona and 10 in Oregon and Washington (plus some travel days). Initially the targets were Russia, Uzbekistan and Portland, Oregon, but the photographic tour in places like the Altai Mountains in Siberia did not come off. Portland was because my partner Jools was attending a convention there. Uzbekistan was a custom tour but everything else I organised myself, including renting a car in Thira, Crete, Andalusia and the US. For those countries, I had routes preprogrammed into my car GPS, including accommodation, photographic destinations and sometimes restaurants.