Quote:
Originally Posted by RB
Duncan can you post some screen shots of the native histogram?
It sounds normal and I'll explain why.
When we stack, most of the info gets compressed into a small section of the overall available histogram, especially since you are using the QHY8 since it has 16 bit depth.
Older DSLRs only have 12 bit per colour channel and the newer ones have 14 bit per colour channel.
The more bit depth an image has, the more the histogram is compressed after stacking.
The spike that you see actually should have info in there, it's just that it takes up only a small portion of the full histogram (since it's a 16 bit camera).
What we do is we use levels first to bring the end points of the histogram in so that the spike gets stretched and eventually that spike becomes a 'bell' curve.
From there, as you know, we do the other necessary curves and other adjustments but avoid any clipping.
I haven't used Maxim DL so I can only speak from my experience with CS3.
Hope that clears it up a little.
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thanks for that RB, it makes *some* sense to me. am at work just now, but will post something tonight
