CFexpress Type A memory cards are available in two types: the CEA-G Series optimized for high-speed write performance and the CEA-M Series with large storage capacity.
Both have the same maximum read speed and maximum write speed, but their other performance characteristics differ as indicated below.
|CEA-G Series CFexpress Type A Memory Card||CEA-M Series CFexpress Type A Memory Card|
|TRANSFER SPEED (READ)||Up to 800 MB/s||Up to 800 MB/s|
|TRANSFER SPEED (WRITE)||Up to 700 MB/s||Up to 700 MB/s|
|Min. sustained write||400 MB/s||200 MB/s|
|VPG（Video Performance Guarantee）||VPG400||VPG200|
|CAPACITY (as of June 1, 2023)||640GB, 320GB, 160GB, 80GB||1920GB, 960GB|
These performance differences result in different capabilities, such as the number of still images that can be recorded in continuous shooting and the amount of time it takes to write images to the memory card after continuous shooting. Also, in addition to the type of memory card, the camera you are using can affect the mentioned aspects of performance.
Refer to the table below for the number of still images that can be recorded in continuous shooting, and choose the type of memory card that best matches the circumstances under which you will be shooting. (Examples are provided for cameras with a small/large difference in performance.)
The following table shows estimated numbers of recordable still images with [Drive Mode] set to [Continuous Shooting: Hi+].
The numbers may vary depending on the shooting conditions and the memory card.
|CEA-G Series CFexpress Type A Memory Card||CEA-M Series CFexpress Type A Memory Card||SF-G series SD Memory Card||CEA-G Series CFexpress Type A Memory Card||CEA-M Series CFexpress Type A Memory Card||SF-G series SD Memory Card|
|JPEG||Approx. 165 images||Approx. 165 images||Approx. 165 images||Approx. 1 000 images or more||Approx. 1 000 images or more||Approx. 1 000 images or more|
|Compressed RAW||Approx. 155 images||Approx. 148 images||Approx. 141 images||Approx. 1 000 images or more||Approx. 63 images||Approx. 43 images|
|Compressed RAW & JPEG||Approx. 152 images||Approx. 141 images||Approx. 135 images||Approx. 1 000 images or more||Approx. 42 images||Approx. 34 images|
|Lossless compression RAW||Approx. 96 images||Approx. 74 images||Approx. 70 images||Approx. 1 000 images or more||Approx. 85 images||Approx. 25 images|
|Lossless compression RAW & JPEG||Approx. 83 images||Approx. 72 images||Approx. 68 images||Approx. 1 000 images or more||Approx. 29 images||Approx. 19 images|
|Uncompressed RAW||Approx. 82 images||Approx. 70 images||Approx. 68 images||Approx. 1 000 images or more||Approx. 26 images||Approx. 18 images|
|Uncompressed RAW & JPEG||Approx. 78 images||Approx. 68 images||Approx. 66 images||Approx. 828 images||Approx. 21 images||Approx. 16 images|
Residual data accumulates over time as data is repeatedly written to and erased from the memory card. The erasure of this residual data takes place on the card internally when new data is written, and this can slow down the write speed. If continuous shooting become slower or errors occur when recording video, the cause could be the effects of residual data.
Performing full formatting (physical formatting) completely erases all the residual data, so it allows you to eliminate the problem.
Sony cameras allow you to switch from ordinary quick formatting to full formatting on the menu screen used for formatting. Particularly before shooting important events, we recommend that you perform full formatting on the camera.