sentences:  While "DX" lenses can be physically mounted on any Nikon film or digital SLR that support the "AI" exposure indexing feature (produced from 1977), there will be some degree of vignetting when used on film cameras, depending on zoom setting.All Nikon full-frame "FX" DSLRs have a DX-compatible mode that, by default when a DX-format lens is attached, crops the captured frames to the DX format and adjusts the viewfinder to reflect the smaller capture area.This can be overridden by the user if desired.