Originally posted by trishytee Unsure of meaning of this one.
Think I am nearly there. Have found noise reduction and turned it off, plus slow shutter speed noise reduction. My lens correction thingy is in grey and does nothing. Do I just do this for slow shots or leave them off all together. Plus what ISO o you think best for lightning. One I did get is very 'noisy" Will post it tomorrow as now have to go to work. Thanks will look forward to replies.
The K7 uses dark frame subtraction (DFS) and you can't turn it off i believe.
It works by making a black photo after the exposure and it uses the same settings for that, so if you use ISO200 30 seconds, then it takes another photo also at ISO200 and 30 seconds but with the shutters up.
So it gets a black photo but it shows the "fix" noise the sensor makes.
You can hack your way into it and turn it off with a script and if you've debug menu enabled.
turn off DFS with your K20D and K7
DFS is only turned on with long exposers