Best Canon EOS 30D Memory Cards

By Nathaniel Stephan
Last Updated: October 27, 2019
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Best Canon EOS 30D Memory Cards

The maximum size Compact Flash card that is compatible with the Canon EOS 30D is 137GB. Based on what is available, that means the largest card you can use is 128GB.

The size limit comes from the original CF card spec. Another limiting factor can be the FAT32 file system. Older operating systems capped the partition size at 32GB.

If you don't want to read explanations of specs, my Recommended CF card is:

SanDisk Extreme 32GB CF Card

  • Read speeds up to 120MB/s.
  • Write speeds up to 85MB/s.
  • Water, x-ray, & shock proof.

Once you have a memory card, expand your creativity with another lens. Check out the 7 Best Canon 30D lenses.

The best value Compact Flash card is going to be either 32GB or 16GB. Smaller or larger cards are going to be more expensive per GB.

A professional card does not add a noticeable amount to the price. Having a high-speed card will remove the need to replace the card with a camera upgrade.

Recommended CF Cards

SanDisk Extreme 32GB Compact Flash Card

  • Read speeds up to 120MB/s.
  • Write speeds up to 85MB/s.
  • Sustained data recording of 20MB/s.
  • Water, x-ray, & shockproof.

SanDisk Ultra 16GB CompactFlash Card

  • Speeds up to 50MB/s.
  • Excellent reliability and value.
  • Ideal for mid-range DSLRs.

Lexar Professional 1066x 32GB CompactFlash Card

  • Transfer speeds up to 160MB/s.
  • Video Performance Guarantee sepc VPG 65.
  • Limited lifetime warranty.

SD to Compact Flash Card Adapter

  • Cheap option if you already have an SD card.
  • Supports SD, SDHC, SDXC cards with a 128GB max.
  • CF Type 1 size.
  • A MicroSD version is available.

Compact Flash Card Types

Compact Flash cards come in two physical sizes. The cards are known as Type I or Type II.

The only difference between the types is the thickness of the cards. The width and length of the cards are the same.

  • Type I - 3.3mm thick
  • Type II - 5mm thick

The Type II spec allowed for the use of Microdrives in the Canon 30D. A Microdrive was a little mechanical harddrive.

When Compact Flash cards were first released they had high prices and had limited storage capacities. Microdrives made it possible to get larger amounts of storage.

Microdrives are no longer manufactured. Due to their mechanical nature, they often failed.

Another usage of the Type II slot is for Compact Flash card adapters. The adapters allow you to use MicroSD or SD cards in a Compact Flash slot.

Card Reader

UGREEN CF Card Reader

The UGREEN 4-in-1 card reader is what I use with my CF cards.

The UGREEN reader uses USB 3.0. Transfer speeds over USB 3.0 will have higher transfer rates than the Canon 30D.

The card reader also supports these additional card types:

  • CompactFlash Cards
  • SD, SDHC, & SDXC Cards
  • Memory Stick (MS), MS Pro, MS PRO-HG, & MS XC DUO
  • MicroSD, Micro SDHC, & Micro SDXC Cards

Avoiding Card Read Errors

One of the most common problems with cameras that use Compact Flash cards are damaged card slot pins. When a pin is bent, you may see any of the following errors:

  • Err 02
  • Err CF
  • No CF

To avoid damaged pins, do not force a Compact Flash card into the Canon EOS 30D. The extra space for a Type II card enables for a Compact Flash card to be misaligned.

If the CF card will not easily slide into the slot, take it out and check the positioning of the card. Also, check to see if the card is damaged.

If everything looks fine, carefully position the CF card and try inserting it again.

Related Cameras

The best Canon EOS 30D memory card can also be used in the following cameras:

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