Took my Tamron 150-600mm with the Canon 1D MK IV and 1D MK II out there for the whole weekend, it's my second time shooting with this Tamron during the Airshow, but last time the weather was horrible I actually didn't really take that many pictures with it, so this is the first time I actually use it for a whole day, here is some sample pictures.
The lens is definitely a keeper for me, not the sharpest lens around but it's so small and light, I carried it all day walking around without breaking my back and my arm, it's surprisingly easy to handhold, actually all picture are handheld except for the Coast Guard helicopter picture I put it on tripod so I can use very slow shutter speed to capture the movement of the props.