Best Sony A300 Memory Card

By Nathaniel Stephan
Last Updated: April 15, 2020
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Best Sony CF Memory Cards

The Sony A300 has only one CompactFlash memory card slot that works with cards that are 32GB or smaller in storage capacity. Using larger Compact Flash cards will cause the camera to display an error.

The cap in memory card capacity is due to the fact that the Sony A300 uses the FAT32 file system.

The Sony A300 is limited to cards that are significantly smaller than what is presently being made. The most useful specifications to focus on are transfer speeds. The faster the read speed a CF card has, the less time you'll have to wait for files to transfer to another device.

Calculated time needed to transfer 32GB:

  • 160MB/s - 3 minutes 45 seconds
  • 120MB/s - 5 minutes
  • 50MB/s - 12 minutes

This is my recommendation for the best CompactFlash memory card for the Sony A300:

SanDisk Extreme Pro CompactFlash Card 32GB

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, broaden your creativity with another lens. Go and visit the 6 Best Sony A300 lenses.

Best CF Cards

The best value CF card is going to be either 32GB or 16GB. Smaller or larger cards are going to have a worse value per GB.

A professional card doesn't add a large amount to the price. Having a high-speed card will eliminate the need to replace the card with a camera upgrade.

Recommended CF Cards

Lexar Professional CompactFlash Card 1066X 32GB

Lexar Professional 1066x 32GB CompactFlash Card

  • Transfer speeds up to 160MB/s.
  • Video Performance Guarantee sepc VPG 65.
  • Limited lifetime warranty.
SanDisk Extreme CompactFlash card 32gb

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 CompactFlash Card 16gb

SanDisk Ultra 16GB CompactFlash Card

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

Compact Flash Card Types

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

The difference between the types is how thick the cards are. The length and width 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 Sony A300. A Microdrive was a little mechanical harddrive, the size of a CF card.

When Compact Flash memory cards were first released they had high prices and limited storage capacities. Microdrives made it possible to have large storage sizes.

Microdrives are no longer being made. Due to their mechanical nature, failure was a matter of time. So you can't even find them used.

SD to Compact Flash card adapters also use Type II slots. The adapters allow you to use SD or Micro SD cards in a Compact Flash slot.

Memory Card Reader

UGreen 4-in-1 Card Reader
There's a bright blue LED that bothered me. It is now covered in gaff tape.

The UGreen 4-in-1 memory card reader can use four common memory card formats. These include all card types camera manufacturers use in all but their most recent professional-level cameras.

The UGREEN reader connects over USB 3.0. The card reader's USB 3.0 transfer speeds will be faster transfer rates than what the Sony A300 can achieve transferring files with the USB mode.

There are many positive customer reviews for the UGREEN reader, which I agree with. I think it's a good product because the reader has been compatible all the computers (Windows, Mac, and Linux) I have used with it.

The cable prevents memory card slots from getting in the way of other accessories or devices that are being used in another USB or nearby port.

When I looked for a card reader that would be lighter for travel, I had to go through the return process with several orders. I came across the most commonly seen problem mentioned in customer reviews, the readers were not recognized by my computer.

The ugreen reader can be used with the memory card types below:

  • CompactFlash Cards
  • SD, SDHC, & SDXC Cards (UHS-I supported)
  • 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 errors with cameras that use Compact Flash cards are damaged card slot pins. When a pin is bent, you could see a 'unable to use card' error.

To avoid bending pins, don't force a CF memory card into the Sony A300. The extra space for a Type II card allows a CF card to be out of alignment.

If the compact flash card won't effortlessly slide into the slot, take it out and check the alignment of the memory card. Also, check to see if these is any damage to the memory card.

If it looks undamaged, carefully position the compact flash card and make another attempt.

Related Cameras

The best Sony A300 memory card can also be used in the following cameras:

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