A:AnswerI have a Nikon D3400 and the Tamron 150-600mm works great. Sometimes it's a little slow to focus which makes it hard to photograph birds in flight, other than that it works great.
A:AnswerIt should work just fine, but I would double-check with Tamron. It depends on the focusing motor. On the 5600, with it's DX sensor, the lens converts to 225-900mm!!
A:AnswerI have used mine on a Nikon D700 with no issues and the resulting images are really something to see IF your focusing is accurate. With the very shallow depth of field with long lenses if you focus is off even a little you and everyone will notice the miss.
A:AnswerI'm not sure I can answer that question. If I were you I would check with the Tamron customer service contact on their website. I found them very helpful on compatibility questions.