Canon EF 200-400mm f4L IS USM Extender 1.4x series 7 if you're always surfing on

if you're always surfing on the information superhighway like me

Works with D200/D300/D800 and similar

The Rodenstock Sironar 210mm f5

and it's not the easiest thing in the world to handhold

Konica Hexanon AR 52mm f1

Canon EF 200-400mm f4L IS USM Extender 1.4x series 7 if you're always surfing onThe Canon EF 200 400mm f4L IS USM Extender 1. 4x is a large lens, as you might imagine it's about 3. 8kg and just shy of 40cm long but for your trouble, you get fast autofocus, fantastic image quality, a pro grade image stabilizer, and heavy duty build quality. Also, this lens has a handy built in 1. 4x teleconverter that just pops into place with the flip of a lever, instantly transforming it into a 280 560mm f5. 6. Light cosmetic finish wear, clean