Upgrade Software Key for V-Log L Recording on DMC-GH4, DC-GH5 and DC-G9 DMW-SFU1GU Original price: $139.99 Add to cart Product information V-Log L Recording for Precise Colour Grading Upgrade Software Key DMW-SFU1GU enables log video recording (V-Log L) on the DMC-GH4*, DC-GH5 and DC-G9 to offer exceptional flexibility as well as wider dynamic range for colour grading in post-production editing. V-Log / V-Log L have been developed to feature similar characteristic curve to Cineon which is a characteristic curve of film digitalization. Taking full advantage of Four Thirds sensor, V-Log L features a log characteristic with 12 stops. Both V-Log and V-Log L have the same characteristic curve and LUT (Look Up Table) can be utilized in common. * The firmware of DMC-GH4 needs to be updated to Ver. 2.4 to activate this function. Please refer to the bundled instruction manual for the activation procedure.