What is the difference between DX and AF Nikkor Lenses? - nikkor lenses
Is there a difference? Or is it just another series?
Friday, January 22, 2010
Nikkor Lenses What Is The Difference Between DX And AF Nikkor Lenses?
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3 comments:
Nikon DX format refers to an image format with an image area of 23.7x15.7mm.
The format was created by Nikon for its digital SLR cameras, which are all equipped with DX-format sensors. The DX format is slightly larger than the area of 22x15mm APS-C and approximately 1.5 × smaller than the area of 135 films. This means that reduces a DX size sensor, the effective angle of 1.5 from the vantage point of 135 movies with a similar goal. This is advantageous for telephoto and macro photography by multiplying the focal length of 1.5, which produces the largest image in the same focal length as compared to 135 films, while maintaining the same depth, one opening and the focal length. However, it becomes a problem for wide-angle photography as a wide-angle lens of 135 films (eg 28 mm) is actually a normal lens for the DX format (28 x 1.5 = 42mm 35mm equiv.). This has led to increasing development of DX-format Nikon F mount lenses, with the circle of smaller image reduces the size and weight of the lens, and alsoallows the production of special wide-angle lenses for the DX-format sensor (eg 12 mm focal length), which would otherwise be very difficult to do, with an image circle of 135 films. If the DX lenses are used in 135-ball cameras, in the image circle does not extend to the entire surface of the foil 135th
AF refers only to the in-built lens with autofocus
Great answer above.
To simplify: The DX lenses are used only for digital SLR cameras from Nikon. This vignette film cameras. AF DX Autofocus does or not.
Final_depth Very impressive!
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