Simon Jori, a local Digital Imaging Technician, has shared with us his findings and thoughts on Arri’s new Open Gate. Thank you to Simon for sharing. Continue reading
Arri recently released version 9 of the Alexa Firmware. Part of this update, for Alexa XT cameras, is a feature called Open Gate. Open Gate uses the full resolution of the sensor, including the space reserved for look around to generate a 3414×2198 resolution ArriRaw image meant to be up scaled to 4k. One of the issues with Open Gate, is that Arri’s Frame line generator web app. is not capable of generating frame lines for the new sensor mode. Included in the White Paper for Open Gate is a work around to generate frame lines. It’s nice of Arri to offer a work around, but the really cool thing about it is the other use of the work around. Continue reading
After seeing what Arri put out on their Facebook page the other day, I wanted to try to achieve something similar. For my test I used an Alexa Plus 4:3 with a Zeiss Master Prime at T1.3, and an EK87 Infrared filter. The Camera was set to 3200iso, 5600° kelvin, 358° shutter.
Here are some ideas:
The question came up recently regarding a Red Epic camera and IR Filters. Here’s the background. Digital cameras are very sensitive to light, and the infrared spectrum can cause your blacks to look red, also known as IR Contamination. The sensor cover glass in the camera is calibrated to remove Inferred light to give you the best colour rendition. ND filters will block light, but not in the infrared spectrum, so the more light you block with ND filters, the higher the ratio is of IR light. Over a certain level, the built in filtration is not enough. Arri recommends the use of IR Filtration at and above ND.9. I haven’t yet seen any specific recommendations from Red so I think it calls for a test. Continue reading
Arri Meta Extract is a new software tool released by Arri today, and if you love working in Terminal, you might find it really cool. As for me, not a programmer, I went through the release notes, followed as many commands as I could, and got… nowhere. The program is essentially a way to pull the frame by frame meta data (pitch, roll, lens data) from Alexa Plus cameras as well as all the other camera settings used directly from the .mov file. It will also extract the Look File data. This creates a lot of potential for automation and integration into a post workflow and VFX. The user interface for the casual user is not as simple as their similar product Clip Meta Viewer, available only through the Apple App store. I did find it interesting that the release notes mentioned GPS Data as future potential. Does this mean Arri is going to offer a GPS option? Please comment if you have a chance to use the software.