Nikon DW-21 6X High-Magnification Finder - Accessory
6X High-Magnification Finder DW-21 For critical high-magnification close-up work and photomicrography. Sophisticated optical system provides clear, sharp view of the entire image at full approx. 6X magnification. Fitted with -5 to +3 diopter adjustment for individual eyesight correction. Rubber eyecup and rubber eyepiece cover included. The drawback of this finder is, only spot metering is permissible with this finder and you'd really need to carefully select the right thing in your screen to meter.