Fitzgerald Marine Preserve.

All shots of fish and crabs were taken through water with a Sigma 150mm Macro, 1.4x TC and 20mm closeup tube on a 20d mounted on a lightwgt tripod, Feisol 3402.

Palo Alto Baylands, 2x teleconverter test.

500mm F4 alone on Sidekick/BH-55, 1DMarkII on Gitzo 1325.

500mm lens plus 2x teleconverter.