From Opus

600mm f/4 ED-IF AF-S Nikkor

Super fast, super quiet lens using Nikon's Silent Wave motor technology. Powerful super-telephoto for photojournalism, sports and nature photography. M/A switch for fast transitions from AF to manual focus. No power drain when manually focusing.

Lens Construction: 10 elements in 7 groups (3ED) - Picture Angle: 4°10' - Minimum Focus Distance: 20 ft. - Maximum Reproduction Ratio (Macro Setting): 1:9.1 - Attachment/ Filter Size: 52mm - Dimensions (diameter x length - in.) : 6.5 x 17.5 in. - Weight (lbs.): 12.8 lbs. - Nikon Lens Hood: HK-23

Content and images originally posted by Andy Bright

[edit] Reviews

[edit] Andy Bright's review

A big chunk of glass and metal and no mistake.

Optically awesome, the f4 factor seperates subject from background (or foreground) in a masterly and convincing manner.

Some may think about a Sigma 800mm f5.6 but a 600mm f4 still outguns this with a 1.4x teleconverter to achieve fast and reliable auto focus, even a 1.7x teleconverter will allow pretty good auto focus.

Clarity and colour rendition are the two big strengths of this lens. AFS is fast and quiet in operation though a tad slower than the latest Canon USM design.

Minimum focus distance is close to 20ft, so extension tubes or teleconverter will be need for smaller birds close up.

Do not buy any 600mm f4 lens without making fully sure you are aware of the size and weight of these monsters, in most regards a 500mm f4 will be the better option. Also make sure that you give lenses like this the support they need, that could mean the best part of �1000 for a Gitzo 1548 and Gimbal type head.

More here http://www.digiscoped.com/600mm.html

[edit] Pros

• Optical quality
• focal length
• AF speed
• colour rendition

[edit] Cons

• weight