Canon EOS EC-GIII Standard Focusing Screen (Like New) boxed
item #ECGIIIscreen. The Canon Ec-C III Focusing Screen is an interchangeable focusing screen. This matte screen features an outer AF ellipse and an inner spot metering reference circle. Standard for EOS 1D Mark II n, EOS 1D Mark II, EOS-1v/1v HS & 1D, compatible with all EF lenses. Condition 10-.