CF Professional FAQs

What is CF 6?

CF 6 is a CompactFlash® memory card specification. This new CF memory card specification allows capacities up to 144PB and measurable speeds up to 167MB/sec. This can be compared to the previous CF 4.1 specification, which only allowed capacities up to 137GB and measurable speeds up to 133MB/sec.

Top
What is UDMA 7?

UDMA 7, which stands for Ultra Direct Mode Access 7, is the latest transfer mode under the UDMA interface. UDMA 7 allows a maximum transfer rate of up to 167MB/sec. This can be compared to the previous UDMA mode, UDMA 6, which allowed transfer rates of up to 133MB/sec.

Parameter

CF 4.1 Specification

CF 5 Specification

CF 6 Specification

Capacity

Up to 137GB

Up to 144PB

Up to 144PB

Measurable Speed

Up to 133MB/sec

Up to 133MB/sec

Up to 167MB/sec

UDMA mode

Up to UDMA 6

Up to UDMA 6

UDMA 7

Top
What is VPG-20?

The VPG-20 logo represent adherence to the Video Performance Guarantee-20 specification for professional-quality video. When used with a compatible camera, the VPG-20 logo on a card means that the system has been tested and guaranteed for professional video capture streams at up to 20MB/sec. This enables professional-quality video capture at high frame rates with no dropped frames.

Top
Can I use a CF 6/UDMA 7 CompactFlash memory card with older host devices?

Yes! All Lexar® CF memory cards built with CF 6/UDMA 7 technology can be used with existing CF and CF UDMA devices (backwards compatible).

Pairing your CF 6/UDMA 7 enabled CF memory card with a CF 6/UDMA 7 enabled host device is recommended to fully take advantage of the performance benefits from your CF 6/UDMA 7 enabled memory card.

Top
Which host devices in the market today are UDMA 7 compatible?

The Canon EOS 1D-X is UDMA 7 enabled.

The Canon EOS 7D, EOS 50D, EOS 1D Mark IV and the EOS 5D Mark II can be UDMA 7 enabled though a firmware upgrade.

Canon EOS 7D firmware upgrade »

Canon EOS 7D, EOS 50D, EOS 1D Mark IV and the EOS 5D Mark II firmware upgrade »

 

Top
Which Lexar card readers are compatible with my Lexar Professional 1000x CF memory card?

The Lexar Professional USB Dual-Slot Card Readers are compatible with the Lexar Professional 1000x CF cards. To optimize the card’s performance, pair the Lexar Professional 1000x CF card with a Lexar Professional USB 3.0 Dual-Slot Reader, which now supports UDMA 7. A firmware download is essential for 1000x CF card functionality on the older Lexar Professional USB 3.0 dual-slot card reader, and can be downloaded here.

Top
Do Lexar CF cards support the exFAT file system?

Lexar CF cards are shipped formatted with the FAT32 file system. Lexar recommends re-formatting the card in the camera before first use.

Top
What is the benefit of using a Lexar CF 6/UDMA 7 CompactFlash card?

Lexar Professional memory cards accelerate the digital photography workflow. Lexar Professional CompactFlash cards deliver professional level, high-speed performance and reliability, with minimum guaranteed speeds. Capture and store high-quality images and 1080p HD video, and transfer files faster to maximize workflow. Lexar Professional CompactFlash cards include Image Rescue® 4 software and come with a limited lifetime warranty. With Lexar Professional CF cards you can count on high-speed performance to save time, beat your deadline, and gain competitive advantage.

Top