Thanks guys
Some with my Canon 7D:
Canon 7D EF 28 - 300L at 300mm f/8 and 1/2000 ISO 400
Great-North-Swim-6 by
singingsnapper, on Flickr
Canon 7D Tamron 200 - 500 at 383mm and f/8 1/3200 ISO 400
Great-North-Swim-9 by
singingsnapper, on Flickr
Canon 7D Tamron 200 - 500 at f/9 and 500mm 1/1600 ISO 400
Great-North-Swim-7 by
singingsnapper, on Flickr
Same camera and lens f/9 500mm 1/640 ISO 400
Great-North-Swim-8 by
singingsnapper, on Flickr