I use a Thinktank Airport TakeOff Airport TakeOff™
I put my housing & body for my cropped sensor dslr, 2 ports, viewfinder, 2 strobes Batteries and laptop in it. Fits in even the smallest overheads in Indonesia. I will throw it on my back if attendants are looking for bags to check so it looks smaller. Roll it in every other airport situation. I use a smaller backpack for lenses and other misc. stuff. Check a hard case for big dome port and other breakables, including the regulators.
I put my housing & body for my cropped sensor dslr, 2 ports, viewfinder, 2 strobes Batteries and laptop in it. Fits in even the smallest overheads in Indonesia. I will throw it on my back if attendants are looking for bags to check so it looks smaller. Roll it in every other airport situation. I use a smaller backpack for lenses and other misc. stuff. Check a hard case for big dome port and other breakables, including the regulators.