Flat Frames - 1/3 to 1/2 Histogram Range or Spot

[deanen]

Hi All

 

Based on the information I've found on the internet, I've been taking flat frames with a histogram between 1/3 to 1/2 way across the graph from the left. What I'm uncertain of is whether the frames should be taken so that collectively they span the entire 1/3 to 1/2 section or do I just take multiple frames with the histogram in the same spot. 

[Adam1234]

I presume you're using a DSLR?

It doesn't need to span the whole range of 1/3 to 1/2, so do multiple frames with the histogram in the same spot, as long as said spot is between 1/3 to 1/2 from the left you'll be fine