Simple FOV comparison Canon 8-15mm & Canon 16-35mm II (sorry, not underwater).
Canon 8-15 at 15mm and 16-35 at 16mm end.
(Hover your mouse over the image to see the different image).
Canon 16-35 at 16mm and 8-15 at 15mm with 1.4 teleconveter.
(Hover your mouse over the image to see the different image).
Canon 8-15 at 15mm and with 1.4 teleconveter.
(Hover your mouse over the image to see the different image).