Real fun lenses apart from the price tag, good for every kind of telephoto photography. Bird photography, wildlife photography, sports photography, portraits, building from a distance, see, etc. This kind of focal length perhaps not very hand-holdable. A good tripod makes the thing more easy.
The following lenses available in this “crazy long” focal length (field of view on Aps-C camera 28cm from 10m, FF camera 45 cm from 10m):
Canon 800 f5,6 is usm
Minimum focusing distance:600 cm
Price: 13 200 Dollars
Seems the new Canon 600mm f/4 is II is better even with the converter than the 800mm f5.6. Perhaps the 800mm Mk II is coming soon.
Nikon 800 f5,6 VR
Sigma 800 f5,6 ex dg apo hsm
Dimensions:15.75 x 52.07 cm
Minimum focusing distance:700 cm
Price: 6600 Dollars
Sigma 300-800 f5,6 ex dg hsm
Minimum focusing distance:600cm
Price: 8 000 Dollars
Canon FD 800/5.6
all manual focus lens cannot used without optical connector(magnifying glass not preferred) on Eos Cameras perhaps can use on Nikon cameras.
Weight:4.25 kg (7 elements in 6 groups)
Canon FD 600/4.5
Weight:3.75 kg (6 elements in 5 groups)
Canon FD 500/4.5
Nikon 800 f5,6 Ais
Weight: 5.45 kg
Other exotic lenses with big reach:
There are some other lenses with huge focal length see below.
Nikon 1200-1700mm f5,6 manual focus
A very interesting lens.
Canon 1200mm f5,6 L USM
This lens is not in stock, Canon only produce it by order. Quite interesting, but very expensive. For this the tripod is a must, even for smaller lenses.
Weight: 16,5 kg
Dimensions: 228*836 mm
Minimal focusing distance: 14 m
Price: 90 000 -120 000 USD
800mm f8 mirror lenses
Mirror lenses are not like normal lenses, they have a design like telescopes, the bokeh can be nervous, on the other hand these lenses are usually compact.
From 200 Dollars