One-for-All good article on cards
Card Type for Camera Storage
- most common type: SD card
- high end sports camera: CF card
- high end video camera: 2.5 inch SSD
- other cards: rarely used
SD card
There are 3 size of SD card
- Full size SD: most common type for cameras
- miniSD: rarely seen nowadays
- microSD: most common type for slim compact cameras and smart phones
We are mainly talking about Full size SD card From Here;
SD card has 3 property to consider when choosing
- capacity: how many GBs of storage
- category label based on capacity:
- SD: 1-2 GB
- SDHC: 4-32 GB
- SDXC: 64-128 GB and upto 2TB
- Maximum Read/Writing speed: how fast it can quickly move in/out data
- category label based on max R/W speed: (Mbps=mega bit per seconds, MBps = mega Byte per second = 8 Mbps)
- normal lower uhs-i and lower cards use mbps (bit) to make number looks bigger, each gen speed also different
- while higer uhs-i and uhs-ii card use MBps (Byte) as they are next gen card fast
- R 280MB/s W 250MB/s : Video Pro
- R 95MB/s W 90MB/s : Photo Pro
- R 90MB/s W 60MB/s : Photo Burst Good
- R 90MB/s W 40MB/s : Photo Burst Good
- R 80MB/s : Good
- R 48MB/s : Average
- below : Low
- Example chart :
- for 4K video, 100mbps, = 12.8MBps
- for 4k video, 60mbps, = 7.5MBps
- for FHD video, 28mbps, = 3.5MBps
- so V30 card and 30MBps write is more than enough for common 4k video and below
- while 60MP high res sensor burst shots will require far more write speed than video.
- uhs-1 limit: 104MBps
name | video rate | Read | Write | price (2023) |
---|---|---|---|---|
SandDisk Extreme U3 UHS-I | V30 | 170MBps | 80MBps | 64GB = 13sgd |
SandDisk Extreme U3 UHS-I | V30 | 180MBps | 90MBps | 128GB = 27sgd |
SandDisk Extreme U3 UHS-I | V30 | 180MBps | 130MBps | 256GB = ?sgd |
SandDisk Extreme Pro U3 UHS-I | V30 | 170MBps | 90MBps | 64GB = 15sgd |
SandDisk Extreme Pro U3 UHS-I | V30 | 200MBps | 90MBps | 64GB = 18sgd-19.5 |
SandDisk Extreme Pro U3 UHS-I | V30 | 200MBps | 90MBps | 128GB = 32sgd-35 |
SandDisk Extreme Pro U3 UHS-I | V30 | 200MBps | 140MBps | 256GB = 55sgd-72 |
SandDisk Extreme Pro U3 UHS-I | V30 | 200MBps | 140MBps | 512GB = 125sgd-139 |
- | ||||
- | ||||
Sandisk Extreme Pro SDXC, UHS-II, 64GB | ? | 280MBps | 250MBps | 64GB |
Sony E 64GB UHS-II | V30 | 270MBps | 70MBps | 64GB=25sgd |
Sony E 128GB UHS-II | V60 | 270MBps | 100MBps | 128GB=60sgd |
Sony M 64GB UHS-II | V60 | 277MBps | 150MBps | 64GB=35sgd |
Sony M 128GB UHS-II | V60 | 277MBps | 150MBps | 128GB=92sgd |
Sony M 64GB UHS-II Tough | V60 | 277MBps | 150MBps | 64GB=63sgd |
Sony M 128GB UHS-II Tough | V60 | 277MBps | 150MBps | 128GB=99sgd |
Sony G 64GB UHS-II Tough (for 8K) | V90 | 300MBps | 299MBps | 64GB=138sgd |
Sony CFexpress 128GB tough | ? | 1700MBps | 1480 MBps | 128GB=306sgd |
- Minimum video recording performance: how fast it can steadily record video
- category label based on Minimum write speed (MB/s) and its corresponding Bus Mode (old to new):
- Class 2,4 (2-4MB/s): Normal speed Bus (DVD resolution recording)
- Class 6 (6MB/s ): Normal speed Bus (HD-FHD resolution recording)
- Class 10 (10MB/s ): High Speed Bus (High Quality HD-FHD resolution recording)
- UHS 1 (10MB/s) : UHS-I Bus (High Quality HD-FHD resolution recording)
- UHS 3 (30MB/s) : UHS-I/II Bus (4K resolution recording)
- V30 (30MB/s) : UHS-I/II Bus (4K resolution recording)
- V60 (60MB/s) : ? Bus (6K? resolution recording)
- V90 (90MB/s) : ? Bus (8K? resolution recording)
- category label based on its Bus Mode:
- Normal Speed bus: 12.5MB/s
- High Speed bus: 25 MB/s
- UHS-I bus: 50MB/s - 100MB/s
- UHS-II bus: 150MB/s - 300MB/s
- ref:
- camera support uhs-ii: