Hopefully a simple question that has got me a tad confused, and you can probably confirm or put me right here.
Looking at moving away from my Nikon F90X into the digital arena, and researching reveals that my current AF lenses will work out to be 1.5 X greater on the digital cameras due to the sizing difference between 35mm and digital CCD's.
Looking at the DX lens designed for digital cameras, do they provide the same angle of view as the equilavent 35mm ones i.e.
18mm DX on a D70 would provide the same angle of view as a 18mm AF on a Nikon F90X ?
Richard
Nope.
Basically, you take the 18mm and multiply by 1.5x to get the same view as if you were using the lens on a film camera. So it will "act like" a 27mm lens.
A 12-24DX will "act like" an 18-35mm zoom, etc.
Remember though, nothing on the lens actually changes - the focal length is still the focal length. What is happening is that the image circle is cropped by the small DX sized sensor. DX lenses are designed so that they have smaller image circles for the small sensor.
