Sony a7R III Video Recording Limits
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|Normal Frame Rates (59.94 fps or less)||29 minutes1|
|High Frame Rates (S&Q Mode)||29 minutes of playback2|
1 Duration is approximate and is a product specification limit.
2 Duration is for final playback time only, not for recording time. For example, recording will automatically stop when the recorded file reaches approximately 15 minutes if the S&Q Record Setting is set set to 60p/50p and S&Q Frame Rate is set to 30fps/25fps.
- The duration of time available for movie recording varies depending on the file format/recording settings for movies, memory card, ambient temperature, Wi-Fi network environment, condition of the camera before you start recording, and condition of the charging of the battery.
- High-quality movie recording and high-speed continuous shooting require large amounts of power. Therefore, if you continue to shoot, the temperature inside the camera will rise, especially that of the image sensor. In such cases, the camera will turn off automatically because the surface of the camera is heated to a high temperature or the high temperature affects the quality of the images or the internal mechanism of the camera.
- Using SD/SDHC cards:
- The card will be formatted in FAT32.
- If the file size exceeds 4 GB, a new file will be created automatically.
- Using SDXC cards:
- The card will be formatted in exFAT.
- Even if the file size exceeds 4 GB during recording, the movie will be saved as a single file.
- If the file size exceeds 2 GB while recording in AVCHD MODE, recording will continue and a new file will be created automatically.
- The Sony a7R III records video in a variable bitrate, which automatically adjusts image quality depending on the shooting scene. Therefore, recording times will vary depending on the content you are shooting and the shooting conditions.
Source: Sony a7R III (ILCE-7RM3) Instruction Manual (English) - pages 88-90