Originally posted by transam879 I just have a question, not strange, but slightly off topic. Which 64GB cards did you get and how do they perform with your K-3. I have a 32GB Sandisk Extreme (95MB/s) and it was the fastest card I could find in real-world use, not just on a spec sheet (tested a few). I know specification-wise many cards can should keep up, but in real-world use it's a different story. I had a Transcend with similar specs and it was much, much slower than the Sandisk. Problem is the Sandisk Extreme 64GB is out of the range I want to spend. I saw some Sandisks with lower MB/s rates for a great price during the Black Friday sales, that on paper should be sufficient to keep up with the K-3, but a hesitated because I'm happy with the performance that I've got. Extra storage is also nice to have....just in case. Basically, what I'm getting at is that SD card performance varies so much, specs can not be relied on, and I just want to get the best bang for my buck.
The cards I have include:
Transcend R95 W60MB/s, class 10SDXC 64 GB. Two of these in the K-3.
Lexar Platinum II, 64 GB, SDXC 299x10. This one in the K-5II
Samsung 64 PRo SDXC class 10. This one in the K-7. One of these also installed in my wife's yellow brick.
SanKisk UltraPlus 40 MB/s SDHC class 10, 16 GB, in the K-20. I also use a San Disk class 4 32 GB card in the K-20.
Actually, I do not do any type of "burst" shooting, so have never experienced any storage delays even in using class 4 cards. My fastest shooting is events related, mostly in the evening with flash, and the delay in awaiting flash recharge is certainly greater than any delay difference in the two types of cards.
My main advantage to the larger cards is to increase storage space, which is now certainly ample with the two 64 GB cards in the K-3.
Perhaps there are some differences that I am not aware of, and do not know how to recognize, but whatever they may be they are not apparently serving as any kind of improvement/impediment to my photography.
Of course, now I also have a desk drawer full of 16 and 32 GB cards, which I would not hesitate to use as needed.
Hope this helps.