They're not cheap, but a 200mm lens on a cropped-sensor body makes for more than a 300mm focal length equivalent, and you can get some surprisingly close shots of the deer, birds, or what have you, without leaving the comfort of your car or blind.
He constructed a number of compound microscopes and long-focus telescopes, the latter consisting of wooden tubes with four lenses, with a focal length of more than 15 m (50 feet).
Lassell built several reflectors, the largest of which was on Malta; this instrument had a 124-cm (49-inch) primary mirror and a focal length of more than 10 metres (33 feet).
defer.add img); A longer focal length is sometimes more flattering to a vehicle, just like it's more flattering to most people.
Fixed focal length lenses require more legwork but reward engagement.
Focal length: 100mm or more.
The Nikon's viewfinder shows more of the image than the Canon — that is, given the same focal length on the lens, the Nikon shows more of what will actually be captured.
Furthermore, there is a trade-off in the selection of the lens focal length, as short focal lengths are more prone to optical aberrations, while long focal lengths can significantly and inconveniently extend the reference delay.
This makes the G9 more of a step-zoom than a true fully-variable focal length camera.
Historically, most major camera makers sold only a single macro lens, usually with a focal length of about 50 millimeters, which provided a more or less normal field of view on a 35-millimeter film camera.
