Alexa Mini
For Alexa Mini Users,
SPECS
http://www.arri.com/camera/alexa_mini/camera_details/alexa-mini/subsection/technical_data/
ProRes
S16 HD: 1920 x 1080 (up-sampled from 1600 x 900)(max 200fps)
HD: 1920 x 1080 (max 200fps)
2K Cine 16:9: 2048 x 1152 (max 200fps)
3.2K: 3200 x 1800 (max 60fps)
4K UHD: 3840 x 2160 (up-sampled from 3.2K)(max 60fps)
4:3 2.8K: 2880 x 2160 (padded to 2944 x 2160)(max 50fps)
Anamorphic ProRes Formats with 2x In-Camera De-squeeze
HD Anamorphic: 1920 x 1080 (max 120fps)
2.39:1 2K Anamorphic: 2048 x 858 (max 120fps)
Recording Time
Alexa Mini Anamorphic Mode Sensor Size
ANAMORPHIC DESQUEEZE IN POST
1.) AlexaMini shoots 4:3 2.8K (2880 x 2160 pixel) mode for Anamorphic lenses. It comes out like the picture below.
2880 x 2160 pixel
2.) In editorial software, desqueeze the image 2x width. Which comes out 5760 x 2160 pixel. This is slightly wider than 2.4:1 aspet ratio.
3.) Keep the same height, crop the side to get the 2.4:1 aspect ratio. 5184 x 2160 pixel for 2.4:1 aspect ratio. 5076 x 2160 pixel for 2.35:1 aspect ratio.(If you are cropping to 16:9, it will be 3840 x 2160 pixel.