The Spectra Cine 900-OP-C Optical Color Probe for the Spectra Film Gate Photometer II is a significant advance in the field of photometry. It is extremely sensitive and solid state throughout. Reads directly in printer steps of 0.025 log exposure units. The large, uncrowded scale has an 80 printer point range and affords ease and accuracy in reading. A variety of probes are available for use in Acme optical printers, Bell & Howell Model "C", "J", and "A" contact printers, ARRI printers and Oxberry printers.