Lens For Nikon
If you are still new to the terms, letters and numbers on the lens for Nikon cameras well it is most definitely going to look like an alphabet soup at first. These numbers and letters explain the features of the lens for Nikon and the camera’s on which these lenses will work on. It is needless to say though that Nikon does deliver an advanced mechanical function and supreme imaging performance when it comes to lens manufacturing.
In 1959 the f-mount lens for Nikon was launched and since then there have not been many changes. This just means that the automatic indexing or AI as Nikon refers to it is the camera lens for Nikon manufactured decades ago but can still be used on the new digital cameras. There are many new lens features that have been introduced in the latest manufactured items.
In 1986 the first autofocus lens for Nikon was made and the acronym for it was AF. With the introduction of this lens, Nikon introduced the AF-D lenses which would tell the camera of the focusing distance. The purpose of giving the distance information was so the camera would get the correct exposure. Unfortunately the only lenses that will focus on the D40 camera model is the AF-S lens known also as the silver wave focus driving motor that was introduced in 1996. For those cameras that aren’t accompanied with a full-frame sensor have to use the DX lens for Nikon that was mainly designed for the Nikon Digital SLR cameras.
For those who are confused about the sets of numbers that appear on lenses, well the focal length is the number that is followed by “mm” on the lenses. The subject is magnified depending on the focal length, so the larger the focal length, the more it is magnified. The aperture or the f-stop is the second number that appears on the lens and is the minimum f-stop for a particular type of lens for Nikon. The photo’s depth of field is determined by the amount of light the lens lets in and that is what f-stop does. More light is permitted into the lens when it is a lower f-stop meaning a narrow depth of field. This works differently on a zoom lens where there are several minimum f-stops for the various focal lengths.
It is best to look up a lens for Nikon compatibility chart before mounting it on to your camera because sometimes this can cause damage to your camera mount. Such as mounting lenses that were made between 1959 and 1977 on the newer Nikon cameras, excepting a few models, can cause damage since there is a solid coupling prong on a pre-AI lens.
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