So in view of the weight of the lens alone of 427 grams, together with the body we are already in a kind of limit area for the gimbal. The M3 is very strong, you can set the engine power to maximum, but don't expect miracles. I mean the M3 website also has a list of compatible lenses so you can get an idea of ​​what the designers are giving the go-ahead for. I keep reading that people with lenses > 400 grams have been able to successfully stabilize the camera. But you shouldn't expect miracles from the different gimbal modes 

Yes you can 

Yes! it can 

Interior Dimension of Backpack - (W x D x H):10.24'' x 5.12'' x 16.14'' Sony 200-600mm Dimensions (W x L) 4.39" x 12.52" 

Hi, we checked the Sony a6600 18-135mm lens seems 55mm, if you like this filter , please reconfirm the lens size , the 55mm lens need to order 55mm size filter ,thanks.