Description:An optical viewfinder designed for film and digital camera that attaches to camera via its accessory shoe.Available in 28mm (135 full frame), no frame.It is an affordable viewfinder with amazing build quality and optics,The viewfinder is bright and clear and the size is small and nearly weightless. Specification:Model:XuanVF28Material: ABS shell + resin lensLens: 2 groups 2 piecesAngle of view: 28mm (135 equivalent) No frameField of view: 90 Percent Regarding parallax: All rangefinder viewfinders will have parallax, as are the original Leica viewfinders. This is related to the position of the viewfinder optical axis and the lens optical axis. You can compensate yourself after mastering the parallax offset. Regarding the lens: The viewfinder lens is an optical resin lens, and some slight dust or fine scratches are inevitable, which will not affect the use. If there is dust staining during use, just use air blowing. Do not wipe the lens excessively. The resin sheet is easy to scratch, especially do not use chemical solvents such as alcohol to wipe!Package: 1 x 28mm viewfinder