User manual ARRI ALEXA

[. . . ] User Manual ARRI ALEXA For ALEXA Software Update Packet 2. 1 Printed on 29 November, 2010 All rights reserved. This document is provided under a license agreement containing restrictions on use and disclosure and is also protected by copyright law. Reverse engineering of the system is prohibited. Due to continued product development this information may change without notice. [. . . ] The WB list presets are 3200K for Tungsten, 4300K for Fluorescent and 5600 for Daylight. The white balance can be adjusted in steps of 100K from 2000 to 11000K. In addition to the white balance, which influences only the red-blue balance of the image, the CC (color compensating) shift can also adjust the green-magenta balance. Any light source that does not have a continuous spectrum, like fluorescent tubes, will have peaks in its spectrum that can not be corrected with the traditional white balance. The CC shift can correct these peaks up to the same amount of a full green or a full magenta gel. Figure 47: White balance list Camera Controls Main Controls 65 If the list lacks the required setting, press the ADD screen button. This opens a screen where the desired setting can be set. Either use the jogwheel to set the desired value, or additionally use the screen buttons for bigger adjustment steps. The lower right screen button can be used to toggle between WB and CC values. Confirming the desired setting with the jogwheel adds a new netry to the list. 1 step of CC SHIFT translates to 035 Kodak CC values or 1/8 Rosco values. Note: A maximum of 16 entries is supported by the list. After reaching this number of entries, it is no longer possible to add entries without deleting others first. Figure 48: Ad WB screen 66 Camera ControlsMain Controls White balance and color compensation should be adjusted only with the help of appropriate equipment. This can either be a color meter or a vectorscope together with a calibrated grey card. List values no longer required can be deleted by pressing the DELETE screen button. This opens a screen where the values desired for deletion can be selected with the jogwheel. To delete the selected value, press the two lower outer screen buttons simultaneously. Note: Default values cannot be deleted. Figure 49: Delete WB list enrty List entries can be assigned a new name, so that it matches either the type of lighting used, or to match it to a certain type of setup (e. g. In the WB screen, press RENAME, then adjust the string as desired, and confirm the changes by pressing DONE. The action can be aborted by pressing BACK. Figure 50: WB rename screen Camera Controls Main Controls 67 11. 1. 5 Menu The menu contains parameters for the basic camera setup. It has a tree structure and the current path in the menu is displayed in the top section of every screen. To access a new menu level, select the group with the jogwheel and press the jogwheel. A parameter has its value displayed at the right part of the screen. Select it with the jogwheel and press the jogwheel to edit it. Cancel an edit action by pressing BACK, confirm the setting by clicking the jogwheel. Figure 51: MENU 11. 1. 5. 1 Recording Provides access to SxS CARDS and REC OUT and allows setting the gamma of the recorded images. · Gamma defines the contrast curve that is applied to the images. The user can choose between Rec 709 video and Log C (no matrix). - Rec 709 video: Gamma according to ITU. R-BT709 standard. [. . . ] 34 R REC OUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 REC OUT 1&2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Recording. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67, 84 RET/SYNC IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]