Originally posted by 1979w72 I've had my K20D for a little over a week now and thought I'd chime in with another sample. I'm using
Dead Pixel Test to provide the counts. Took three shots from both my K10D and K20D at ISO 400, 1/30 sec, 2 sec mirror, dial @ M, with lens cap on. K20D - Slow speed NR = Auto, High-ISO = Off. K10D - Noise reduction = Off.
3 images from K10D ==> count of 6 hot pixels on each
3 images from K20D ==> count of 190, 196, 195 hot pixels respectively
These are using the default value of 60 for the luminance threshold. Is this a reasonable value for this test?
Just posting as an additional point of information. Didn't sync all settings (just those noted above) across cameras so if there are other settings that affect the numbers, please let me know as I'm curious.
One additional set - same parameters as above except drive mode to single instead of 2 sec mirror
3 images from K10D ==> count of 6 hot pixels on each
3 images from K20D ==> count of 2, 2, 1 hot pixels respectively
My Result:
1. ISO 200, 1/60, 2 sec mirror, M, lens cap on, High ISO Noise Reduction weak
13 pixels when threshold = 60
397 pixels when threshold = 20
628 pixels when threshold = 17
2064 pixels when threshold = 9 (still visible)
2. Same setting except 2 sec timer
0 pixels when threshold > 17
1 pixels when threshold = 17
108 pixels when threshold = 9