How can I know which lenses will work in Open Gate sensor mode?
To find out which lenses will work in the Open Gate sensor mode, you can use the ARRI Frame Line and Lens Illumination Tool.
Every lens is brighter in the center than in the corners: that is called the lens illumination. To get a feeling for how lenses perform in Open Gate, you first choose a sensor mode and what framelines you want to check out. Then you choose a lens model, focal length, iris and focus setting, which are all parameters that affect lens illumination. The resulting image will show how the illumination falls off towards the corners and if you get vignetting. We have most ARRI lenses in there already, but the guys are still shooting, so we will add more lenses as time goes by. You can see the result right there on the screen or save the images as a JPEG file.
Some lenses do better and others worse. One of the lenses that does really well is our Ultra Wide Zoom UWZ 9.5 - 18; it was designed for a large image circle. Most primes under 18 mm have an issue shooting Open Gate, so the UWZ really solves the question of how to shoot wide angle with Open Gate.