The Poor Man’s Super-Telephoto

The lens of choice among the serious pro wildlife photographers I know seems to be the 600mm ƒ/4 super-telephoto. It’s great for subjects that won’t let you get close, is incredibly sharp, and autofocuses quickly and accurately. However, it costs over $7,000. That being just a bit beyond my budget, when I really need “reach,” I turn my $1,200 300mm ƒ/4 lens into a 600mm ƒ/8 by attaching a $300 2x teleconverter between the lens and camera body.