Originally posted by mdave13 RAW files, type DNG
I have been playing with SD cards lightly for years. I seem to see a winner in the Sandisk as far as the K20D goes. If things hold as they are my interest is in getting two of the Sandisk. As I Plan to buy either the K30 or K5 (probably the K30) in the near future. So I could use those cards now and in my new dSLR. Here is a post I made a few weeks ago at DPR...
Slow SD cards for K20D or perhaps...: Pentax SLR Talk Forum: Digital Photography Review
I will give my honest times to flush a continuous burst that is most important to me in getting BIF. The K20D is slow enough, don't need a card slowing it down more. My new Samsung is the fastest card (by a couple seconds) I have had in my K20D. It will do 17 to 18/pics, it varies for some reason. All other cards would fill with 16/pics; Samsung can get in one or two (17-18) more before slowing and flush the buffer (fully until the orange light goes out) in ~18/seconds. The setting are ISO100-400, F/3.5 1/500 RAW DNG files. Hold until it stops (slows to a crawl) and time how long it takes from the end of your burst until the orange light goes out. Could you give it a go in your K20D. I would appreciate it. Can't give you anything but a like. The reason being is I think you are getting a bit better flush times in burst before it slows down. This could help me now and I would get them from Amazon.
BTW I have owned the K20D for darn near four years now. I really like that camera. IMO you can't love a camera so I don't use that word when speaking of things other than people. But yea I like my K20D. I have almost 60,000 shutter counts on it. I thought you could not bracket shoot in RAW. Yep learn new things all the time about the K20D.