Just did a test, that should bring it all up. Tested it with Jpg and RAW.
Basic test:
1) With (hood) cap on/off, 1/250, iso80, shooting for 15 and 60 seconds. Both wil end with a full buffer and the difference is the processing or writespeedlimit to be reached in those 45 seconds (give or take with some margin of partially filled buffer).
2) No (Hood) cap, 1/250, iso5000, RAW only to make big files. Again 15 and 60 seconds.
Jpeg:
- Well somehow the with (hood) cap on the files are very small but the camera is not making more pics as to be ecspected. This was tested before for running one star quality Jpeg's at 7 fps endlessly. There is some other limitation for this then writingspeed! Even with no (hood) cap on writingspeed is under 11 MB/s.
RAW:
- At iso 80 files are not very big with the (hood) cap on, some just under 10 Mb. The difference is 100 versus 39 RAW files giving 586 MB to write away in 45 seconds -> 13 Mb/s
- At iso 5000 files are uge, almost 30 Mb for a single file with no (hood) cap on. In 15 sec. the camera took 31 RAW that where 920 Mb and after 52 seconds the red light was out, giving a filewrite off 17,7 MB/s including all processing. In 60 seconds the K-5 took 58 RAW giving 1,736 Gb of filesspace to fill. The difference of 27 files giving 816 MB to write in 45 seconds -> 18,1 Mb/s
I think that is the limitation of the K-5 or my card or the combination. The card is a classe 10 32Gb PQ1 card, and writemax according to the manufacture is 24,5 Mb/s (for what it's word since I haven't tested it myself) with 30 Mb/s readspeed.
So untill someone else wil test this, with a SanDisc card or an SDXC card in my opinion the max writespeed for the K-5 is (just under) 18,5 Mb/s
Last edited by RonHendriks1966; 01-11-2011 at 03:34 PM.