The Arri Alexa Mini LF has three sensor modes - LF Open Gate, LF 2.39:1 and LF 16:9. In LF Open Gate and LF 2.39:1 your resolution is locked to 4448 x 3069 and 4448 x 1859 respectively.

In LF 16:9 mode you can record in its native resolution of 3840 x 2160 but you also have the option to down-sample your image to 2K or HD.

Recording Resolutions

Here are the recording resolutions available in each of the three sensor modes. We've also shown the codec options available for the Alexa Mini LF's sensor modes.

Sensor Mode Resolution Codec
LF Open Gate 4448 x 3096 ARRIRAW
ProRes 4444 XQ
ProRes 4444
ProRes 422 HQ
LF 2.39:1 4448 x 1856 ARRIRAW
ProRes 4444 XQ
ProRes 4444
ProRes 422 HQ
LF 16:9 3840 x 2160 ARRIRAW
ProRes 4444 XQ
ProRes 4444
ProRes 422 HQ
2048 x 1152 ProRes 4444 XQ
ProRes 4444
ProRes 422 HQ
1920 x 1080 ProRes 4444 XQ
ProRes 4444
ProRes 422 HQ

Visualising The Different Resolutions

Here's how the size of each resolution compares in the Alexa Mini LF:


If you wish to learn more about the Arri Alexa Mini LF please check out our other articles in this series and if you have a question that wasn't answered, please let us know.

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