Test ARRI D-20 Video Mode Alfonso Parra AEC

We have shot during two days with the digital camera ARRI D20 in the last month of June in Zaragoza and inside of Congress TEA 2006. Test of the camera have done in video mode HD 1920x1080, 24fps, Mechanical shutter of 172´8º, 1:1.85 and with gamma curve ITU R BT.709 EI320 and at times curve Log C and Filmstream , recording in a Sony HDCAM SR 4:4:4 SQ in RGB and 10 linear bits. We could not try the camera in their cinema mode where camera generates "RAW" data with all of the information that the sensor can offer, these data are recorded on disk array and after they "are developed" in postproduction for working

with them. Images have been worked in Fotofilm / Deluxe( Madrid ) and Image Film ( Barcelona ) capturing these from a Sony SRW 5500 in RGB, dual link exit 4:4:4 with a DVS Clipster , entrance format RGB, dual link 4:4:4.

The video images are turned into real time to data, format DPX 10 bits. Data have been transferred to Lustre's local storage where the correction of colour was accomplished, being necessary the creation of two projects, linear one and logarithmic other, depending of the image. We filmed with Arrilaser , using an internal conversion of linear 10 bits to 10 logarithmic for the linear images. We filmed the logarithmic images without applying any conversion. Unlike a normal HD, "sharpness" correction has not been applicable, right now than,

apparently , additional saturation is not necessary either. We filmed on Kodak 5242 and the positive was Kodak Vision and Premier. Nevertheless we made a little test too filming with ArriLaser in 16bits and a 20% plus of chroma.

Test has been based on overexposure and underexposure images with models and referential charts as well as at different natural locations of Zaragoza .

see more: test ARRI d-20 pdf