Sony SF-G Series UHS-II SD Memory Card
Sony SF-G Series UHS-II SD Memory Card
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The Sony SF-G Series UHS-II SD Memory Card is a professional-grade SDXC storage solution featuring UHS-II bus interface technology, delivering sustained write speeds up to 260 MB/s and read speeds up to 300 MB/s for demanding content creation workflows. Professional cinematographers, broadcast engineers, and high-speed photography specialists rely on this card for uninterrupted 4K and 8K video recording, RAW image burst capture, and real-time data logging applications. This card solves the critical problem of buffer overflow during sustained high-bitrate recording by providing exceptional write consistency and reliability in professional production environments.
Specifications
| Specification | Details |
| Product Type | SDXC UHS-II Memory Card |
| Brand | Sony |
| Origin | Original/Authentic |
| Bus Interface | UHS-II with backward compatibility to UHS-I and HS |
| Read Speed | Up to 300 MB/s |
| Write Speed | Up to 260 MB/s sustained |
| Video Speed Class | V90 (minimum 90 MB/s write speed) |
| Capacity Options | 32GB, 64GB, 128GB, 256GB, 512GB |
| Operating Temperature | -25°C to 85°C |
| Shock Resistance | 1500G shock resistance rating |
Why Choose Sony SF-G Series UHS-II SD Memory Card?
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Key Features of Sony SF-G Series UHS-II SD Memory Card
- UHS-II Interface: 312 MB/s theoretical bandwidth enables simultaneous high-speed read and write operations for uninterrupted 4K/8K video recording without buffer limitations
- V90 Video Speed Class: Guaranteed minimum sustained write speed of 90 MB/s ensures reliable performance during continuous high-bitrate cinema recording and RAW burst capture
- 300 MB/s Read Speed: Accelerates file transfer to editing workstations, reducing post-production workflow bottlenecks and enabling faster media ingestion
- Advanced Thermal Management: Optimized power delivery circuitry minimizes heat generation during sustained operations, maintaining performance stability in extended shooting sessions
- Rugged Construction: 1500G shock resistance, X-ray immunity, and wide temperature tolerance (-25°C to 85°C) provide reliability in extreme field production environments
- Backward Compatibility: Full compatibility with UHS-I and legacy HS-mode devices ensures seamless integration with existing camera systems and readers
Perfect For
- 4K/8K Cinema Production: Professional video cameras require sustained write speeds exceeding 200 MB/s for uncompressed or lightly compressed video formats; the SF-G Series V90 certification guarantees buffer-free recording throughout multi-hour shooting sessions
- High-Speed Photography: Sports and wildlife photographers performing 14-bit RAW burst capture at 10+ frames per second depend on consistent write performance to prevent frame drops and maintain image sequence integrity
- Broadcast Live Event Coverage: News gathering and live broadcast operations require cards with proven reliability and thermal stability; the SF-G Series maintains performance during extended outdoor events in variable climate conditions
- Drone Aerial Cinematography: Unmanned aircraft systems recording 6K or 8K video at high frame rates need cards with minimal thermal output and shock resistance to withstand vibration and altitude pressure changes
- Data Logging and Scientific Research: Laboratory equipment and environmental monitoring systems utilize the SF-G Series for continuous high-frequency sensor data acquisition without performance degradation
How to Use
Insert the Sony SF-G Series card into your camera's SDXC card slot with the label facing toward the back of the camera. Most professional cameras automatically detect and configure the card for optimal performance. For initial use, format the card in-camera using the device's native formatting utility rather than computer-based formatters, as this ensures proper file system alignment with the camera's read/write optimization algorithms. This in-camera formatting process typically takes 2-5 minutes and should be performed before first use to establish the device-specific allocation table structures.
During operation, monitor your camera's buffer indicator and write speed telemetry if available through the device's menu system. The SF-G Series is engineered to maintain rated write speeds even as the card fills; however, best practice recommends offloading footage to external storage when the card reaches 80% capacity to preserve optimal performance margins. After shooting sessions, allow the card to cool to ambient temperature before removing it from the camera, particularly after extended high-bitrate recording. Store the card in a protective case away from magnetic fields, extreme temperatures, and humidity to maintain long-term data integrity and prevent physical damage to the gold contacts.
Product Overview
The Sony SF-G Series operates on the UHS-II (Ultra High Speed II) protocol, which delivers a theoretical maximum bus bandwidth of 312 MB/s compared to the 104 MB/s limitation of UHS-I cards. This dual-bus architecture enables simultaneous read and write operations at near-maximum speeds, making it ideal for professional video production where real-time performance is non-negotiable. The card utilizes advanced flash memory architecture with sophisticated error correction and wear-leveling algorithms to maintain consistent performance throughout its operational lifespan, even under extreme thermal and mechanical stress conditions.
What distinguishes the SF-G Series from consumer-grade alternatives is its V90 Video Speed Class certification, guaranteeing minimum sustained write speeds of 90 MB/s regardless of card capacity or usage patterns. The card incorporates Sony's proprietary firmware optimization and advanced power management circuitry to minimize thermal generation during intensive operations. Additionally, the SF-G Series features enhanced shock resistance, temperature tolerance ranging from -25°C to 85°C, and X-ray resistance, making it suitable for field production in harsh environmental conditions including high-altitude aerial cinematography and underwater documentary work.
Frequently Asked Questions
What is the difference between UHS-II and UHS-I card interfaces?
UHS-II cards feature a dual-bus architecture with a second row of pins enabling 312 MB/s theoretical bandwidth, compared to 104 MB/s for UHS-I cards. The SF-G Series UHS-II design allows simultaneous high-speed read and write operations, critical for professional video production. UHS-II cards maintain full backward compatibility with UHS-I devices, though they operate at UHS-I speeds in those systems. For professional 4K/8K workflows, UHS-II is essential to prevent buffer overflow during sustained recording.
Is the V90 speed class rating sufficient for 8K RAW video recording?
V90 certification guarantees minimum 90 MB/s sustained write speed, which is adequate for most 8K compressed video formats (H.265 at 100-200 Mbps bitrate requires 12-25 MB/s). However, uncompressed or lightly compressed 8K RAW recording can demand 400+ MB/s write speeds, exceeding the SF-G Series sustained capability. For RAW 8K workflows, verify your specific camera's bitrate specifications and consider using multiple cards in rotation or external SSD recorders. The SF-G Series excels for compressed 8K and uncompressed 4K production.
Can I use the SF-G Series in older camera models with UHS-I slots?
Yes, the SF-G Series features full backward compatibility with UHS-I and legacy HS-mode devices. When inserted into a UHS-I camera, the card automatically operates at UHS-I speeds (104 MB/s maximum), losing the UHS-II performance advantage but remaining fully functional. This backward compatibility allows professional users to upgrade their storage while maintaining compatibility with legacy equipment, though you should verify your specific camera model supports SDXC format, as some older devices only recognize SDHC cards.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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