The Nikon D5100's dioptric correction (for eyeglass wearers) has a range from -1.7 to +0.7 diopter, adjusted via a slider on the right side of the viewfinder eyepiece housing. The viewfinder has ...

As with most DSLRs, the Nikon D90 has an optical viewfinder that ... adjusts the focusing of the viewfinder optics to accommodate eyeglass wearers, and the viewfinder also has quite a high ...

EssilorLuxottica SA has bought a 5.1% stake in Nikon, causing a boost in the imaging giant's shares. According to Reuters, ...