Originally posted by hcc You received some good advice so far. Let me add a personal experience. I shoot often in Hi Continuous Shooting and I need the Hi frame rate 5.2 fps for at least 5-10 s. I even took sequences of more than 60 s at 5.2 fps. (I have a K-7, but the K-5 has the basically the same features). I did numerous tests with a range of settings and lenses. Ultimately I found a solution whcih works well for me (and other Pentaxians).
The keys of consistent fast burst rates are:
1- switch off (kill off) al in-camera PP,
2- use a fast card (class 10 or better) with ample of free space,
3- shoot JPEG and select a JPEG size such the the JPEG size times time the frame rate is less than the card writing speed.
[1] is critical in all cases. Remove all in-camera PP including lens distortion correction, high-ISO correction, ....
[2] and [3] are essential to long sequences/bursts to prevent the buffer to be full.
Hope that the comments will help.
With K-7 you can take pictures at hi-speed for ever with setting the camera to jpg and one star quality. This is not possible with K-5. The max is some 105-107 jpg in one minute, it slows down when buffer is full and continous with about 1,3 fps. For RAW it is about 1,25 fps after full buffer with a fast card.