Nikon D90 VR Lens Compatibility Info
Nikon D90 Basics
- The Nikon D90 has received positive reviews from journalists and users alike. Nikon's 12.3 megapixel, CMOS sensor camera produces a maximum image size of 4,288 pixels wide and 2,848 pixels high. The camera's 12-bit sensor creates images in Nikon's proprietary RAW format called NEF, or in standard JPEG format. As with all Nikon DSLR cameras, the D90 uses the company's "F" mount lens mounting system. The D90 is capable of supporting autofocus features with every lens type made by Nikon, except Nikon's AI-P lenses. The D90 has a DX format sensor that allows a crop factor of 1.5x, and it is applied to the focal length of all lenses used. In other words, a lens with a focal length of 18mm functions as a 27mm lens on the D90.
- Nikon's VR (vibration reduction) lenses are designed to reduce image blur caused by camera movement, subject movement and defocusing. Because the VR technology is built into the lens and not the camera body, the D90 is fully compatible with every VR lens made by Nikon. Nikon's VR technology uses two lens sensors that detect pitch and yaw movement (vertical and horizontal movement) and sends that information to two motors. The motors adjust internal lens mechanisms that reduce image blur. As of March 2011, Nikon has 24 VR lenses in its lineup.
VR Lens Benefits
- Because VR lenses reduce or eliminate blur, these lenses provide various benefits to the photographer. Nikon's in-the-lens technology provides a more stable viewfinder image for the photographer. This allows the photographer to focus more accurately on his subject and does not interfere when composing an image. Also, when using spot metering, the stabilized viewfinder image allows for more accurate metering. Since Nikon designs its technology at the lens level, it can optimize the technology for each lens. This means longer focal length lenses do not use the same design properties as shorter focal length lenses.
- Although a Nikon VR lens helps reduce blurred images, not every photographic situation requires its use. For this reason, Nikon allows the user to turn the technology off at the flip of a switch. For example, when photographing non-moving objects in a studio while using flash and a tripod, VR technology may not improve the resultant images.