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Wex Photo Video£279.00Visit shop Lexar Professional CFexpress 4.0 Type B Diamond 128GB Memory Card
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The Lexar Professional CFexpress 4.0 Type B Diamond 128GB is designed for professional photographers and cinematographers who require extreme data throughput for 8K RAW video capture and high-speed continuous burst shooting. It offers industry-leading write speeds that eliminate buffer bottlenecks, though users should ensure their camera hardware supports the CFexpress 4.0 standard to realize the full performance potential of the card.
| Series | Diamond |
|---|---|
| Model Part Number | LCXEXD4128G-RNENG |
| Brand | Lexar |
Yes, it is generally backwards compatible with most Type B CFexpress 2.0 cameras, though you will be limited to that camera's maximum bus speed.
pSLC (pseudo-Single Level Cell) technology provides higher endurance, speed, and reliability compared to standard TLC memory found in consumer cards.
The card is IP5X rated for dust-proofing and shock resistance, but it is not rated for water immersion.
Yes, it is more than capable of handling 4K video, as it is specifically engineered for even more demanding 8K RAW workflows.
To reach the 3700 MB/s read speeds, you must use a CFexpress 4.0 certified card reader.
Ensure the card is fully inserted and try re-formatting the card via the camera's internal menu system.
Verify that your card reader is CFexpress 4.0 compatible and connected to a high-speed Thunderbolt or USB 4.0 port.
Ensure your camera firmware is up to date and that the video bitrate settings do not exceed the card's supported write specifications.
To begin using the card, insert it into your camera's CFexpress Type B slot until it clicks into place. It is highly recommended to format the card within your camera menu upon the first use to ensure the file system is properly optimized for your specific model. While the card is backwards compatible with many CFexpress 2.0 cameras, you will only see maximum 4.0 speed benefits when paired with a CFexpress 4.0-compliant reader. When cleaning, use only a soft, dry cloth; do not touch the contact pins with your fingers, and always store the card in a protective case when not in use to maintain the IP5X dust-proof integrity.
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