Pentax K10D Memory Card Compatibility

By Nathaniel Stephan
Last Updated: October 25, 2019
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Olympus SD Memory Card Compatibility

The Pentax K10D has an memory card slot that can use SD memory cards. The camera can work with SD cards up to 32GB in storage capacity.

An error code will be displayed if you try to use an SD memory card that has a capacity of 64GB or larger. For more storage, you are going to need to purchase several SD memory cards. The read and write speeds of SD cards are the most important specs to focus on.

If your camera will be getting lots of use. A feature that is good to have is UHS-I as it enables fast speeds with a compatible memory card reader.

To make sure the memory card can be used with as many cameras in the future as possible, get a high-quality card. To prevent ending up with a camera upgrade causing you to need to shop for a new card that can write data fast enough for shooting 4k video.

This is my recommendation for the best SD memory card for the Pentax K10D:

SanDisk Extreme Pro UHS-I SDHC Memory Card

SanDisk Extreme Pro 32GB

  • Best SD card available
  • Largest compatible storage capacity.
  • Read speeds of up to 95MB/s.
  • Write speeds of up to 90MB/s.
  • Shock-proof, temperature-proof, waterproof, and x-ray proof.

Best SD Cards

Since the introduction of the Pentax K10D, memory card prices have dropped and storage capacities have gotten larger. The difference in price between the fastest card and a cheap one is astonishingly little. Cost is related to storage, with the larger cards having a higher price.

Paying for the highest capacity cards makes sense if you are going to shoot a large amount of RAW files for wildlife, sports, events, or action photography. Another consideration could be if you plan to replace your camera or use the sd card in a different device.

In my opinion, the SanDisk Extreme Pro line of memory cards are usually the best option for most cameras. They are fast cards which means they have the best prospect of working with future digital cameras or devices that use SD cards.

PNY Elite Performance And Lexar Professional are other cards that I have also had positive experiences with. I have not had files or data become damaged or unrecoverable on any of these cards. If that did take place, all of the manufacturers provide image recovery software.

When I have encountered troubles it has been with generic SD memory cards. Having a low price or being a bundled accessory are the main selling points of these cards. Unfortunately, this is also the most popular version of card to be advertised incorrectly.

It is easy to put a Class 10 sticker on a Class 4 card. When the camera image processor starts writing data there is going to be an error or unreadable photos if the card's write speed is not fast enough.

Storage size controls a big portion of the cost. You'll be better off by getting a card with a smaller capacity to lower cost as opposed to using a generic brand. Read and write speeds are important factors that will affect your satisfaction with the Pentax K10D.

Recommended SD Cards

Lexar 633x 23GB UHS-I SDHC Memory Card

Lexar Professional 633X 32GB

  • High-speed, Class 10 performance.
  • UHS-I technology for a read transfer speeds up to 633x (95MB/s).
  • High-speed file transfer from card to computer to dramatically accelerate workflow.

The Lexar Professional comes close to matching the performance to the SanDisk Extreme Pro SD card when used in the Pentax K10D. The important difference is that the Lexar SD memory card provides a slower write speed.

Sometimes there can be a big difference in cost between the Lexar and SanDisk memory cards. I would not pay more for the Lexar, but also would have no issue choosing it if it was substantially more affordable.

SanDisk Ultra UHS-I SDHC Memory Card

SanDisk Ultra 32GB

  • Good value to save some money.
  • Quick transfer read up to 80MB/s.
  • Class 10 rating for Full HD video (1080p).
  • Waterproof, temperature proof, X-ray Proof, magnet-Proof, and shockproof.

The SanDisk Ultra is a step down from the Extreme Pro when it comes to specificatos. The benefit being that it is less expensive.

You will not notice a difference in time savings unless you need to write data that will fill up a big part of the card's capacity. It is not the ideal choice if you plan to use the memory card to record 4k video in the future.

SanDisk Extreme Pro UHS-I SDHC Memory Card

SanDisk Extreme Pro 32GB

  • Read speeds of up to 95MB/s; write speeds of up to 90MB/s.
  • Shock-proof, temperature-proof, waterproof, and x-ray proof.

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 read four common memory card formats. These include all card types camera manufacturers make use of in all but their latest professional-level cameras.

The UGREEN memory card reader has a USB 3.0 connection. Transfer speeds over USB 3.0 will have faster transfer speeds than what the Pentax K10D can reach in USB transfer mode.

There are overwhelmingly favorable customer reviews for the UGREEN reader, which I agree with. I think it's a good product because the reader has worked with 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 devices or accessories that are plugged in.

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

The UGREEN reader can use the following card formats:

  • 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

Pentax K10D SD Card Compatibility

Only use SD and SDHC memory cards with the Pentax K10D. Check to ensure that your camera has the most recent firmware.

SDUC or SDXC memory cards cannot be used with the K10D.

Four different types of Secure Digital (SD) cards exist that you need to be aware of. You can tell the difference based on their capacity.

  • Secure Digital (SD) - 128MB to 2GB.
  • Secure Digital High Capacity (SDHC) - 4GB to 32GB.
  • Secure Digital eXtended Capacity (SDXC) - 64GB to 2TB.
  • Secure Digital Ultra Capacity (SDUC) - 4TB to 128TB.

Image Capacity

Olympus SD Memory Card Contacts

Image quality options on the Pentax K10D will influence the number of image files that can be stored at once. Higher image quality settings will produce bigger image sizes.

If you're looking to shoot a bunch of RAW files, getting a larger capacity card can be a good idea.

If you shoot JPEGs, you would be better off investing in an additional battery instead of a larger SD card. 32GB should be plenty of capacity to store several days worth of photos.

The controlling part to how many pictures you can take will be your camera batteries. Take into account that, any time the Pentax K10D is powered on, even if you're just going through menu settings or using the live view, that will eat away at battery life.

In low light environments, like indoors or at night, the flash built-in to the camera can be helpful. Shutter speeds will not be fast enough without using the flash to avoid motion blur. Working with the flash is going to rapidly drain the camera batteries. These settings are when you need to own at the very least a couple of Pentax D-LI50 rechargeable batteries for the camera.

The following is an estimation of how many high-quality JPEG images you should be able to save on a memory card for the provided storage size:

  • 4GB - 1,160 images
  • 8GB - 2,320 images
  • 16GB - 4,640 images
  • 32GB - 9,280 images

Speed, Class, & UHS Ratings

Card Speed

Speed ratings of an SD memory card is dependant on the sequential write and read speeds. Card file write speed is important for video and continuous shooting.

A slow card can cause a reduction in the number of continuous frames the Pentax K10D can capture. This is because the camera's buffer will not be able to write data to the memory card fast enough.

With video, a slow memory card can cause a sudden end to the recording. The video file might also end up being corrupted. If you are going to record video, it is essential the memory card you use meets the required continuous write speed for video.

Card read speed is important for file transfers to a computer or laptop. If you are filling up cards with images or video, a memory card with a fast read speed will cut down on the amount of time it takes the transfer to complete.

Speed Class Rating

Example of where to find SD Card Speed Class
The 10 inside of the C means the card is Class 10.

The Class rating of an SD card is based on the sustained write speed. SD cards that have a minimum write speed of at least 10MB/s are labeled as Class 10.

  • Class 2 - 2MB/s
  • Class 4 - 4MB/s
  • Class 6 - 6MB/s
  • Class 8 - 8MB/s
  • Class 10 - 10MB/s or faster

Every brand name memory card that you can find for sale today will have a Class 10 rating. You can check the class rating of a card by looking for a number inside of a C on the label.

Ultra High Speed (UHS)

Example of an SD memory card with a UHS-I rating.
The UHS rating of a card can be determined by a Roman numeral I, II, or III on the label of the card.

The Ultra High Speed (UHS) bus is available in SDUC, SDXC, and SDHC cards. The UHS bus makes it possible for faster file transfer rates.

Three separate specs exist. They are UHS-I, UHS-II, and UHS-III.

You can find out the UHS rating of a memory card by checking the front of the card. The presence of a Roman numeral I, II, or III on the label, that will be the rating of the SD memory card.

  • UHS-I - Maximum transfer rate of 104 MB/s
  • UHS-II - Maximum transfer rate of 312 MB/s
  • UHS-III - Maximum transfer rate of 624 MB/s

Related Cameras

If you could only choose one, SanDisk 32GB Extreme Pro is the best Pentax K10D memory card. Any future camera you own, you will know what sd memory card to buy.

Here are more pages on cameras with similar needs as the K10D:

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