K.V.Rajasingham

What is FX and DX. The d7000 is it dx or FAX.

bratliff Loc: Atlanta, GA

These both refer to the physical size of the camera sensor. Dx is smaller than equivalent 35mm film size. Fx is equivalent in size to 35mm film. Your d7000 has a DX sensor.

f8lee Loc: New Mexico

The "FX" term came about because marketers in the camera industry decided that everything should be compared to the 35MM film format, which is a rectangle 24x36MM (yes, there were "half frame" film caress back in the day but this is what the vast majority of future DSLR purchasers were most familiar with).

In the beginning of digital camera manufacturing, imaging sensors were costly to make and it wasn't yet possible to mass produce 24x36MM image chips without too much manufacturing fallout (i.e. - duds that had to be tossed), so chips that are 16x24MM in size were the "norm". Of course, with the smaller imaging area, a given focal length lens presents a narrower angle of view, so the "crop-factor" concept was introduced. With a DX camera (such as yours) the crop factor is 1.5, which means that a 50MM lens mounted on your camera will present a view similar to what a 75MM lens (50x1.5) would show in a full frame "FX" camera. For those with experience in the 35Mm film works, this actually helps one estimate what kind of focal length they need to use to achieve a desired shooting frame.

There is nothing inherently special about 35MM film format other than its ubiquity for decades; thus the FX/DX designations to help budding digital photographers better understand. For those who shot 6x6 or 6x7CM formats (Hasselblad and the like) the "normal" lens was the 80MM, while for the 35MM film (or digital FX) camera 50MM is considered normal, and for DX a 35MM focal length offers an angle of view that is considered normal.

Indiana Loc: Huntington, Indiana

Very thorough explaination. Good examples. Nice writing. Your grade today is A.

rfmaude41 Loc: Lancaster, Texas (DFW area)

True that the normal for a 6X6 is 80mm, BUT, the normal for a 6X7 is 90mm

alby Loc: very eastern pa.

thanks f8. always wanted an easy explanation

K.V.Rajasingham

Fantastic,superb,excellent,explanation. Very much appreciated. Thank u verrrrrrrrrrrrrrrryyyyyyyyyyyy much.