Micro 4/3 is worth a look, too. Here are a few mirrorless cameras I like:
Sony a6300, a6500
Fujifilm X-T2, X-Pro2
Olympus OM-D EM-5 II, PEN F, OM-D EM-1 II
Panasonic Lumix DMC-G85, DMC-GH4, DMC-GH5 (arrives late March/early April)
These are all very different, very capable machines. Sony and Fujifilm models listed have APS-C sensors. Olympus and Panasonic models are all Micro 4/3. Olympus and Panasonic can mount each other's lenses, and there are over 90 Micro 4/3 lenses available.
http://hazeghi.org/mft-lenses.html lists most of them.thanks so much,Burkphoto for your informative reply.much appreciated.I am going to research all suggested.I feel digital is once again" on the move "ok with that
I own a GH4 and two pro zooms (12-35 and 35-100mm f/2.8, equivalent in field of view to 24-70 and 70-200mm on full frame). That kit is about one fourth the size, bulk, and weight of equivalent full frame dSLR gear, and 1/3 the size, bulk and weight of equivalent APS-C dSLR gear. My bag is MUCH lighter than in the film days. And I carry one light bag instead of two heavy cases, since I no longer need a separate video camera.
I see little point to Sony full frame mirrorless if your goal is to travel lighter. It's great equipment, but the system weight is about the same as full frame dSLR.
I'd go browse the reviews of the latest models at
http://www.dpreview.com/ and then try before you buy. Rentals are available from many sources.
Micro 4/3 is worth a look, too. Here are a few mir... (