Pentax K100D Memory Card Compatibility
The Pentax K100D uses SD memory cards. 32GB is the biggest capacity SD card that will work in the K100D.
SD memory cards that satisfy the SDXC or SDUC specifications will not function properly in the K100D. These cards will be 64GB or larger, so they can easily be avoided.
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Recommended K100D SD Cards
Here are several choices to pick from that will work correctly in the K100D. With any of the cards below, you will not have to be worried about slow functionality or SD memory card glitches.
- Sequential read speed of up to 100MB/s
- Class 10, U1 rating delivers speed and performance for full HD photography and HD videography.
- V10 video speed rating to capture uninterrupted HD video at 1920x1080 format
- Compatible with point & shoot cameras, DSLR cameras, standard & advanced HD-enabled video cameras, and more
- Reliable & Durable: Magnet Proof, Shock Proof, Temperature Proof, Waterproof
- Quick transfer read speeds up to 90MB/s.
- Write speeds are not capable of recording 4k video.
- Class 10 rating for Full HD video (1080p).
- Waterproof, temperature proof, X-ray Proof, magnet-Proof, and shockproof.
- UHS Speed Class 1 (U1) supports Full HD video and burst shots. 130MB/s transfer speeds1 let you upload footage to your PC in an instant.
- Built to survive tough conditions and heavy usage, whether you’re at home, outside, or on the go. Backed by 10-year limited warranty.
- Highly durable with comprehensive 7-proof protection.
- Backed by a 10 year warranty.
Best SD Cards
Premium quality memory cards are produced by both SanDisk and Lexar. Low-priced third-party brand names ought to be avoided.
Memory card problems, like a loss of all of your shots because of data corruption, is more inclined to occur with inexpensive cards. The reduction in build quality is not worth the minimal amount of savings.
Purchase a reduced capacity memory card should you want to reduce costs. They tend to be slightly lower in cost and you won’t need to worry about the SD card becoming corrupted.
Understand that, SD card problems are very infrequent. Only only two cards have become corrupted out of the considerable number I have acquired over the years. The two memory cards were pre-owned house cards that were bundled with the purchase of pre-owned digital cameras.
Pentax K100D SD Card Compatibility
Currently, 4 different specs of Secure Digital (SD) memory cards exist. The Pentax K100D can only use SD memory cards. The benefit is that there is an increase in the transfer rates and maximum storage capacity with the release of every updated specification.
Secure Digital memory card readers are backward compatible. A card reader built into a digital camera that can use SDXC cards will also be able to use SDHC and SD memory cards.
The Pentax K100D’s card reader can only read the original two SD card specifications. SDUC or SDXC memory cards are not going to function correctly.
- Secure Digital (SD) - These memory cards have a maximum capacity of 2GB and are compatible with the K100D.
- Secure Digital High Capacity (SDHC) - The capacity of these memory cards range from 4GB to 32GB and are also compatible with the K100D.
- Secure Digital eXtended Capacity (SDXC) - The capacity of these memory cards range from 64GB to 2TiB.
- Secure Digital Ultra Capacity (SDUC) - The capacity of these memory cards range from 4TiB to 128TiB.
Pentax K100D Memory Card Full Error
Attempting to use an SD memory card that is 64GB or larger in size in the K100D results in the camera to display an error.
Use an SD memory card with a storage capacity of 32GB or less to avoid the problem.
If you have an SD memory card that is 32GB or a smaller capacity, and the card is not functioning correctly, format the card while it is in the camera.
Speed, Class, & Capacity
SD Card Image Capacity
Here is an estimation of the total number of large JPEGs you could expect to save on an SD card.
- 4GB - 1920 images
- 8GB - 3840 images
- 16GB - 7680 images
- 32GB - 15360 images
Memory Card Speed
The speed rating for SD cards is determined by sequential read and write speeds. The speed of the card is important when many shots need to be written to the SD card.
SD Card Speed Class Rating
The Class speed rating of an SD memory card is related to the sustained write speed of the SD memory card. A Class speed rating of 2 means that the memory card can sustain a write speed of more than 2MB per second.
- Class 2 - 2MB/s
- Class 4 - 4MB/s
- Class 6 - 6MB/s
- Class 8 - 8MB/s
- Class 10 - 10MB/s
The maximum rating an SD card can attain is Class 10. There are memory cards that are significantly faster than 10MB/s. Those SD memory cards use other solutions, such as UHS (Ultra Highspeed Bus), which use a different rating specifications.
Sustained write speeds of 2MB, 4MB, 6MB, or 8MB per second means the card has a speed class of 2, 4, 6, or 8. Cards that have write speeds of 10MB/s or faster are rated as Class 10.
Conclusion
Buy an SD memory card for the Pentax K100D based on price. An expensive card isn’t going to improve performance. As long as it is a speed class 10 card, you will be fine. My recommendation is the PNY Elite 32GB SD memory card.