SloPhoto wrote:
I would expect in a 30 second test you would hit ~1.9 frames/second transferred (57) plus the base buffer of ~15 leading to a total in the 72ish range.
Close, except the lower frame rate is only for the remainder of the time not the full 30 seconds.
The fastest card (SanDisk Extreme Pro 95MB/s 32GB) averaged something like this:
36.7MB RAW (14-bit lossless compressed):
14 shots at ~6 fps for 2.33 seconds
52 shots at 1.88 fps for 27.67 seconds
Total: 66 shots in 30 seconds
I ran the test using the same settings but different test scene and the numbers increased due to smaller file size.
29.5MB RAW (14-bit lossless compressed):
16 shots at ~6fps for 2.70 seconds
53 shots at 2.2 fps for 27.3 seconds
Total: 69 shots in 30 seconds
So just changing the scene slightly is going to affect the results. SD cards are also not perfectly consistent in write speed. On longer runs this can cause a frame or two lower result.
