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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsDigital camera storage is the nonvolatile memory that keeps photos and videos after you capture them. A camera may use built-in memory or a removable card; the card must match the camera’s supported format, capacity and performance requirements.
What digital camera storage does
Storage holds the image and video files a camera records. It is separate from the sensor, which captures light, and the image processor, which processes the capture. With a removable card, you can take the card out and copy its files using a compatible reader. The SD Association describes flash storage’s role in photography.
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What kind of memory card does a digital camera use?
There is no single card type for every camera. SD-family cards are common, while other removable standards include CFexpress, CFast, XQD and CompactFlash. The camera’s slot and supported specifications determine what works; a newer or faster card will not work if the camera does not support its format.
Check the camera manual or its official support page for the exact card family, physical type, supported capacity and interface. The CompactFlash Association’s card-type overview lists several removable-media standards, and Sony’s recording guidance distinguishes SD and CFexpress requirements.
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What do SD, SDHC, SDXC and SDUC mean?
These labels identify SD capacity families and their associated file-system specifications. The following ranges are standard-defined capacities, not estimates of how many photos a card stores. The SD Association’s current overview, accessed in 2026, gives these ranges:
| SD family | Standard capacity range | Associated file system |
|---|---|---|
| SD | Up to 2 GB | FAT12/16 |
| SDHC | Above 2 GB through 32 GB | FAT32 |
| SDXC | Above 32 GB through 2 TB | exFAT |
| SDUC | Above 2 TB through 128 TB | exFAT |
These are categories in the SD standard, not a promise that every camera accepts every category. The SD Association capacity specifications explain the ranges; confirm compatibility with your camera before choosing a card.
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How much storage do you need?
Choose capacity based on your camera’s supported limit, the length of your shoot and the size of the files it creates. There is no reliable universal number of photos per gigabyte: resolution, compression, file format and camera settings all affect file size. Use the camera manual or its remaining-capacity display for a model-specific estimate.
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What does a card’s speed rating mean?
Speed-class labels specify minimum write performance. They help indicate whether a card can keep up with a recording device’s required data rate, particularly during video recording or sustained bursts. The SD Association distinguishes SD Speed Class, UHS Speed Class and Video Speed Class ratings from bus-interface performance; the camera and card must both support an interface for its performance to be useful. See the Association’s speed and compatibility FAQ.
Quick Recap
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- Save time with card offload speeds of up to 200MB/s powered by SanDisk QuickFlow Technology (Up to 200MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. X = 150KB/sec. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 512GB and 1TB capacities. 1GB=1,000,000,000 bytes. 1TB=1,000,000,000,000 bytes. Actual user storage less.)
- Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)
- Shot speeds up to 90MB/s (Write speed up to 90MB/s. Based on internal testing; performance may be lower depending upon host device. 1MB=1,000,000 bytes. X = 150KB/sec.)
- Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)
- UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS enabled host devices. See the SD Association’s official website.)
Rank #3
- Save time with card offload speeds of up to 200MB/s powered by SanDisk QuickFlow Technology (Up to 200MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. X = 150KB/sec. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 512GB and 1TB capacities. 1GB=1,000,000,000 bytes. 1TB=1,000,000,000,000 bytes. Actual user storage less.)
- Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)
- Shot speeds up to 140MB/s (Write speed up to 140MB/s. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. X = 150KB/sec.)
- Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)
- UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS enabled host devices. See the SD Association’s official website.)
- For video: Match the camera’s stated speed-class requirement for the recording mode you plan to use, especially for high-bitrate video.
- For bursts: Write performance can affect how quickly a camera clears its buffer and is ready for more shots.
- When comparing cards: Do not rely only on an advertised peak read speed. Read and write performance serve different purposes, and the camera’s requirements set the compatibility floor.
How to choose storage for your camera
- Check compatibility first. Find the supported card family, physical type, capacity and interface in the camera manual or official support documentation.
- Choose capacity for the shoot. Consider how many files you expect to capture and their formats, while staying within the camera’s supported limit.
- Match minimum write performance to the workload. Follow the camera’s requirement for your chosen video mode or burst use.
- Plan file transfer. If you remove the card to copy files, use a reader that supports its format. You can then copy the files to a computer or other storage for editing and safekeeping.
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