Adorama has posted some really good deals on memory cards! The Extreme cards are fast enough to deliver optimal performance with all Pentax bodies. The Ultra cards are good for lower-resolution models, but not flagships like the K-1, K-3, or 645Z.

Here are the cards I personally recommend:

SanDisk Extreme 32GB UHS-I Class 10 U3 SDHC Memory Card, Up to 90MB/s Read and Up to 40MB/s Write Speed $14.99
SanDisk Extreme 32GB UHS-I Class 10 U3 SDHC Memory Card SDSDXVE-032G-ANCIN



SanDisk Extreme 64GB UHS-I Class 10 U3 SDXC Memory Card, Up to 90MB/s Read and Up to 40MB/s Write Speed $24.99
SanDisk Extreme 64GB UHS-I Class 10 U3 SDXC Memory Card SDSDXVE-064G-ANCIN



SanDisk Extreme 128GB UHS-I Class 10 U3 V30 SDXC Memory Card, Up to 90MB/s Read and Up to 60MB/s Write Speed $49.99
SanDisk Extreme 128GB UHS-I Class 10 U3 V30 SDXC Memory Card SDSDXVF-128G-ANCIN

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All other deals:

SanDisk 8GB Class 10, Ultra SDHC UHS-I Memory Card, 40MB/s Read Speed $4.99
SanDisk 8GB Ultra UHS-1 SDHC Memory Card SDSDU-008G-A46

SanDisk 16GB Class 10 Ultra SDHC UHS-I Memory Card, Up to 80MB/s Read Speed $5.99
SanDisk 16GB Class 10 Ultra SDHC UHS-I Memory Card SDSDUNC-016G-AN6IN

SanDisk 32GB Class 10 Ultra SDHC UHS-I Memory Card, Up to 80MB/s Read Speed $9.99
SanDisk 32GB Class 10 Ultra SDHC UHS-I Memory Card SDSDUNC-032G-AN6IN

SanDisk 64GB Class 10 Ultra SDHC UHS-I Memory Card, Up to 80MB/s Read Speed $17.99
SanDisk 64GB Class 10 Ultra SDHC UHS-I Memory Card SDSDUNC-064G-AN6IN

SanDisk 128GB Class 10 Ultra SDHC UHS-I Memory Card, Up to 80MB/s Read Speed $34.99
SanDisk 128GB Class 10 Ultra SDHC UHS-I Memory Card SDSDUNC-128G-AN6IN

SanDisk 16GB Class 10 U3 Extreme SDHC UHS-I Memory Card, Up to 90MB/s Read Speed and Up to 40MB/s Write speed $9.99
SanDisk 16GB Class 10 U3 Extreme SDHC UHS-I Memory Card SDSDXNE-016G-ANCIN

SanDisk 256GB Class 10 U3 Extreme SDXC UHS-I Memory Card, Up to 90MB/s Read Speed and Up to 60MB/s Write speed $109.99
SanDisk 256GB Class 10 U3 Extreme SDXC UHS-I Memory Card SDSDXNF-256G-ANCIN

SanDisk Extreme 256GB UHS-I Class 10 U3 V30 SDXC Memory Card, Up to 90MB/s Read and Up to 60MB/s Write Speed $109.99
SanDisk Extreme 256GB UHS-I Class 10 U3 V30 SDXC Memory Card SDSDXVF-256G-ANCIN

SanDisk 16GB Class 10 ExtremePRO SDHC Memory Card, U3, 95MB/s Read Speed $15.99
SanDisk 16GB ExtremePRO UHS-1 SDHC Memory Card SDSDXP-016G-A46

SanDisk Extreme PRO 32GB UHS-I Class 10 U3 V30 SDHC Memory Card, Up to 95MB/s Read and Up to 90MB/s Write Speed $19.99
SanDisk Extreme PRO 32GB UHS-I Class 10 U3 V30 SDHC Memory Card SDSDXXG-032G-ANCIN

SanDisk Extreme PRO 128GB UHS-I Class 10 U3 V30 SDXC Memory Card, Up to 95MB/s Read and Up to 90MB/s Write Speed $59.99
SanDisk Extreme PRO 128GB UHS-I Class 10 U3 V30 SDXC Memory Card SDSDXXG-128G-ANCIN

SanDisk Extreme PRO 256GB UHS-I Class 10 U3 V30 SDXC Memory Card, Up to 95MB/s Read and Up to 90MB/s Write Speed $119.99
SanDisk Extreme PRO 256GB UHS-I Class 10 U3 V30 SDXC Memory Card SDSDXXG-256G-ANCIN

[jpzk]

Adam:

I have been using the 32GB SanDisk Extreme Pro SDHC U3 (Class 10) for my K3 and all is well with them.

Is the SanDisk Extreme PRO 32GB UHS-I Class 10 U3 V30 SDHC Memory Card, Up to 95MB/s Read and Up to 90MB/s Write Speed $19.99
SanDisk Extreme PRO 32GB UHS-I Class 10 U3 V30 SDHC Memory Card SDSDXXG-032G-ANCIN (mentioned above) would be about the same and also for my K5 ?
What is this "V30" labelling on the card?

Thanks!

[Dan]

...
What is this "V30" labelling on the card?

Thanks!

It is the "Video Class" of the card. It signifies that the card can record at a minimum of 30 MB/s, which is adequate for 4K video.

I hope this helps,

Dan

[jpzk]

It is the "Video Class" of the card. It signifies that the card can record at a minimum of 30 MB/s, which is adequate for 4K video.

I hope this helps,

Dan

Thanks Dan.
I don't do video, only stills.
But what I was also wondering is whether this card is the same as the one I mentioned in my earlier post.

[Fivesixnine]

Thank you Adam

[kjphilippona]

B&H reduced the price of the 64gb Extreme Pro card to $29.69! I was not going to use SanDisk, hope I did not make a big mistake but I ordered one for my K-3!