Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== One-for-All good article on cards ====== * http://www.pentaxforums.com/articles/photo-articles/comprehensive-sd-card-guide.html ====== 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: * https://www.memorycard.expert/-Article/UHS-II-Cameras photowiki/card.txt Last modified: 2023/10/09 15:36by ying