Sigma LVF-01 LCD Viewfinder for DP Quattro Camera Sigma LVF-01 LCD Viewfinder for DP Quattro Camera - Sigma 4 Year Limited Warranty (1 Year North and South America + 3 Year USA Extended Warranty with Registration) Compatibility: DP Quattro Camera Magnification: 2.5x Diopter Adjustment: -2 to +1 Eyepoint: 20 mm