Can Data Be Recovered from a Formatted Camera Card? SD, CF, and CFexpress Explained

Summary: Data can usually be recovered from a formatted camera card, provided nothing new has been written to it since the format. Formatting removes the file list but leaves the photos and videos on the card until new files overwrite them, which is why the card should be taken out of the camera straight away and handed to a professional recovery service. This blog walks through the main camera card types, how their speed ratings work, and what a camera does when it formats a card. It also explains what to do after an accidental format and why RAW and video files are challenging to recover.

Can you recover data from a formatted camera card? In most cases, the answer is a resounding yes. Photographers format memory cards regularly, sometimes deliberately before a shoot and sometimes by accident. Formatting erases the file index and creates a fresh folder structure for the camera. The photos and videos, however, remain on the card until new data overwrites them.

What Are the Different Types of Camera Memory Cards?

Memory card packaging often features abbreviations that indicate storage capacity, transfer speed, or device compatibility. Below are the main card types currently in use.

The SD Card Family

Most consumer cameras, drones, camcorders, and dashcams rely on some version of the secure digital (SD) card. The standard has expanded over several generations to keep pace with larger files and higher-resolution video.

• SD – The original type is limited to a maximum of 2GB. It is now found chiefly in older or legacy equipment. The standard SD card format has three variants: full-size, miniSD, and microSD. Over time, microSD replaced miniSD. The standard format has one row of pins, but the pin count varies by variant. For example, full-size SD cards have 9 pins, while microSD cards have 8.
• microSD – Built for smartphones, action cameras, drones, and other compact devices. They follow the same capacity tiers as their full-sized counterparts and typically come with an adapter, allowing them to be used in a standard SD card slot when needed.
• SDHC (High Capacity) – Capacity ranges from 4GB to 32GB and uses the FAT32 filesystem. For non-professional point-and-shoot photography, an SDHC card is likely sufficient. 
• SDXC (eXtended Capacity) – Supports 64GB to 2TB and is the standard choice for most current mirrorless and DSLR cameras. It uses the exFAT file system to support large files and high data transfer speeds for high-resolution images and videos, such as 4K or 8K. 
• SDUC (Ultra Capacity) – the newest tier, with a capacity range of over 2TB up to 128 TB. It uses the exFAT file system intended primarily for high-bitrate video and other very large files.

CompactFlash (CF) Card

• Before SD cards took over, professional photographers relied on CompactFlash.
• Its speed and rugged build made it a natural fit for larger camera bodies.
• Original CF cards used a Parallel ATA (PATA) interface, also known as IDE. Simple, passive pin adapters were enough to connect them directly to IDE controllers.
• Later generations expanded on the design with higher-capacity versions, faster variants for sustained high-speed writing, and cards with different connection types for quicker data transfer.

CFexpress Card

• CFexpress is the latest generation of professional-grade cards.
• Its read and write speeds are far beyond those of standard SD cards, which is why photographers and videographers favour it for high-resolution images and video.
• A single card can carry an enormous amount of data, so an accidental deletion or a corrupted card can be very expensive.
• For anyone who cannot afford to lose a shoot, CFexpress card recovery deserves serious attention.

XQD Card

• XQD is the successor to the CompactFlash card and supports high-speed data transfer.
• Capacities range from 32GB to 240GB.
• Sports, action, and other fast-paced photography are where it is used most often.
• The card works with both FAT32 and exFAT. FAT32 covers cards up to 32GB, while exFAT supports 64GB and larger.

What Do SD Card Speed Ratings Mean?

The SD Association has categorised SD cards by performance based on various factors:

1. Speed Class and UHS Speed Class Ratings

Speed Class rates the minimum sustained write speed of a card (Class 2, 4, 6, and 10).

Class	Serial Data Writing Speed	Application
Class 2	2 MB/s	Video recording
Class 4	4 MB/s	High-definition video recording (720p to 1080p)
Class 6	6 MB/s	High-definition video recording (720p to 1080p)
Class 10	10 MB/s	Real-time broadcasts
UHS Speed Class 1 (U1)	10 MB/s	Real-time broadcasts
UHS Speed Class 3 (U3)	30 MB/s	4K video recording

2. UHS and SD Express Bus Interfaces

UHS Speed Class relates to bus speed, which is how fast data moves between the card and the device. Available bus types include UHS-I, UHS-II, UHS-III, and SD Express.

Bus Interface	Card Type	Bus Mark	Bus Speed	Physical Layer Specification
Default Speed	SD, SDHC, SDXC, and SDUC	None	12.5MB/s	1.01
High Speed	SD, SDHC, SDXC, and SDUC	None	25MB/s	1.10
UHS-I	SDHC, SDXC, and SDUC	“I”	50MB/s (SDR50, DDR50) / 104MB/s (SDR104)	3.01
UHS-II	SDHC, SDXC, and SDUC	“II”	156MB/s Full Duplex / 312MB/s Half Duplex	4.00
UHS-III	SDHC, SDXC, and SDUC	“III”	312MB/s Full Duplex / 624MB/s Full Duplex	6.00
SD Express	SDHC, SDXC, and SDUC	“EXPRESS”	985MB/s (PCIe Gen.3 x1 Lane)	7.00
SD Express	SDHC, SDXC, and SDUC	“EXPRESS”	1970MB/s (PCIe Gen.4 x1 Lane / PCIe Gen.3 x2 Lane)	8.00
SD Express	SDHC, SDXC, and SDUC	“EXPRESS”	3940MB/s (PCIe Gen.4 x2 Lane)	8.00

3. Video Speed Class

Video Speed Class rates the minimum write speed a card can maintain during video recording (V6 to V90). V6 through V30 cards support HD and 4K video, while only V60 and V90 cards are suitable for 8K recording.

4. Application Performance Class

Apps can launch directly from the card, depending on its ability to handle small random reads and writes. Both A1 and A2 classes guarantee a minimum write speed of 10MB/s. A2 offers significantly better random-access performance than A1, but these speeds apply only if the device supports A2.

What Happens When a Camera Formats a Memory Card?

The key points are as follows:

• Formatting creates a new file allocation table, root directory, and the folder structure the camera needs, usually a DCIM folder with model-specific subfolders. Cards up to 32GB typically use FAT32, while larger cards use exFAT.
• The camera removes the pointers that indicate where each file begins and ends. The image and video data remain in the memory cells until they are overwritten, allowing recovery software to restore files after an accidental format.
• Cameras typically offer two formatting modes. Standard format quickly erases the directory and allocation table. Low-level format operates at the firmware level, maps bad sectors, and more thoroughly erases residual data. This process takes longer and is not available on all camera models.
• Formatting the card in-camera ensures the allocation unit size and file structure match the camera’s firmware. Cards formatted on a PC may behave inconsistently in the camera and can sometimes cause write errors during use.

How Can Data Be Recovered from a Formatted SD, microSD, CFexpress, or CF Card? 

If a card has been formatted in the camera and you have no backup, take it out of use immediately and send it to professional SD card recovery services. The same advice applies to formatted camera card recovery on SD, microSD, CFexpress, and CF cards. Recovery experts work from a clone of the card and never alter the original media. Photo recovery software is also available as a do-it-yourself option to recover photos from a formatted SD card when the files are noncritical.

Which SD Card Types Are Monolithic and Which Are Not?

Full-size SD cards were once built in a non-monolithic way almost without exception, though this has gradually changed.

Card Type	Construction	Details
Original SD	Non-monolithic	Made from separate surface-mounted parts on a small printed circuit board (PCB). These include an independent controller chip, a separate NAND flash chip, and discrete passive components, all enclosed in a plastic shell.
SDHC	Mostly non-monolithic	Older high-capacity cards are usually non-monolithic, as the standard evolved from the original multi-component PCB design.
SDXC	Commonly non-monolithic	Faster UHS-I and UHS-II versions generally remain multi-component.
SD Express	Typically non-monolithic	Adds PCIe and NVMe interfaces to standard SDXC and SDUC form factors. This usually needs a more complex, multi-chip controller design to connect the interfaces.
microSD	Virtually all monolithic	The controller and flash memory are combined into a single package, which suits the card's small size.

Monolithic construction is now appearing in a growing number of lower-cost and lower-capacity full-size SD, SDHC, and SDXC cards as well.

Why Are CompactFlash Cards Non-Monolithic?

A CompactFlash card has a hard outer case that contains a separate controller and one or more NAND flash chips on a full-size PCB. The larger body makes a non-monolithic design the norm in almost every case.

Card Type	Construction	Details
CF Type I and Type II (CF 3.0, 4.1, 5.0, and 6.0)	Non-monolithic	Parallel-interface (PATA) cards with an independent controller wired to separate flash packages.
CFast (1.0 and 2.0)	Non-monolithic	Replaced the pin interface with Serial ATA (SATA) but kept a distinct, multi-component controller and flash design, which matters for CFast Card Data Recovery.
CFexpress (Type A, B, and C)	Non-monolithic	Uses a PCIe interface and multi-chip layouts with high-end controllers to support higher performance.

Why Do RAW and Video Files Need Special Handling During Recovery?

A RAW file contains unprocessed data from the camera sensor, without compression, sharpening, or colour adjustments. In contrast, a JPEG is a compressed, finalised version of this data. Since RAW files preserve all sensor details, they require careful handling if a card fails. Video files also need careful management, though for reasons related to their writing process.

Attributes of RAW Image Files:

Attribute	Details
File Size	Considerably larger than JPEGs, as no in-camera compression is applied.
Write Pattern	Written to the card in continuous, high-volume bursts instead of smaller, discrete chunks.
File Format	Saved in proprietary formats such as CR2, CR3, NEF, ARW, and ORF. These differ between manufacturers and, on occasion, between camera generations from the same manufacturer.

Attributes of Raw Video Files:

Attribute	Details
Fragmentation	Recorded in fragmented segments, especially during lengthy clips or when the buffer clears mid-recording.
FAT32 File Size Limit	Often exceeds the 4GB limit imposed by FAT32, prompting the camera to split a single recording into multiple linked files.

It’s a Wrap: Why Is RAW File Recovery More Complex Than JPEG Recovery

JPEG files are small, compact, and typically saved as a single piece, making them easy for recovery tools to restore. In contrast, RAW photos and video clips are much larger, written in long bursts, and often stored in fragmented pieces. Without the file list, reassembling these fragments is challenging, and even minor errors can result in unusable photos or incomplete video clips.

Stellar Data Recovery specialises in formatted camera card recovery and in recovering data from damaged cards used by photographers and videographers, including proprietary RAW formats and fragmented video. Because photo shoots are often difficult to repeat, a single mistake can cause permanent loss. Contact Stellar Data Recovery for a free consultation before taking further action.

Related Case Studies and Reading

Stellar Data Recovery has handled real cases involving formatted and physically damaged camera cards. The links below cover a few of them.

• How to Recover Video Files from a Formatted CF Card | Stellar Gurugram
• Sony SD Card Data Recovery Case Study | Stellar Data Recovery
• SD Card Recovery: Recovered Files from Damaged Transcend SD Card

FAQs

1. Does Formatting a Camera Card Permanently Delete Photos and Videos?

A standard format does not permanently delete photos and videos. It removes only the pointers that mark where each file starts and stops, and the data stays on the memory cells until new files overwrite it. This is why formatted camera card recovery is often possible when the format was accidental. A low-level format wipes residual data more thoroughly, which makes recovery far less likely.

2. What Should Be Done Immediately After Accidentally Formatting a Camera Card?

Remove the card from the camera and stop recording, copying, or formatting anything on it, as every new file overwrites original data and lowers the chance of full recovery. Contact a professional data recovery service for an evaluation. If you have no backup and the files aren’t critical, photo recovery software on a separate device is another option.

3. Why Can My Camera Not Access My SD Card?

First, check the physical lock switch on the edge of the card. If it is locked, slide it to unlock and reinsert the card, which often resolves the issue. If the camera still cannot read the card, clean the contacts and test the card in another camera. Formatting is safe only if the card has nothing important on it and you have backed up any photos and videos beforehand.

4. What Does Err 02 Mean on a Camera?

Err 02 usually points to the memory card. The camera either cannot recognise the card or finds an invalid partition, often after you delete photos or copy them off and resume shooting without reformatting the card. Dirty or misaligned contacts can also be the cause, though less often. Don’t format a card with unbacked-up photos to clear the error, because you will lose the files you need to recover.

5. Why Is My SD Card Showing Empty After Taking Photos?

An SD card that looks empty after shooting usually has a corrupted file system. Common triggers include malware, removing the card mid-shoot, and a folder structure the camera cannot read. Stop using the card and recover the photos with photo recovery software or a data recovery service.

6. Why Does My Camera Say the Memory Card Is Full When It Is Not?

This message usually points to a problem with the card or the camera, not a missing card. Common causes include a corrupted card, dirty contacts in the card slot, and occasionally a firmware conflict. Turn the camera off, then insert a different card. If the error persists, have a professional inspect the camera. Before formatting or replacing it, check a card with photos or footage for recoverable data.