It weighs more than 4.5 kg and costs around £15,500 so Nikon’s 800mm f5.6 6E telephoto lens is not something that is within reach of every photographer.
But for those of you out there who happen to have the odd £15,000 burning a hole in your pocket, here are a few user reviews of this substantial piece of glass.
First impressions from Leon Neal who got to try it out at the London Olympics
A field trial from Roy Mangersnes, who took the lens to Svalbard.
And if you are still wondering why the lens costs so much this article from nphotomag.com explains why.
Nikon 800mm f/5.6: 10 reasons why it costs so much!
If you do get your hands on one of these lenses we’d love to hear from you and see some of your results.