Histogram stretching using the keyboard?

Sequence Generator Request Archive
1

Is it possible to adjust the histogram manually using the keyboard? I find that
fine adjustment with the mouse dragging those arrows is very hit and miss and frustrating.

Thanks,

Mike

2

You can, please see this section in our help (I will also move this to the stretching section so it’s easier to find):

http://www.mainsequencesoftware.com/Content/SGPHelp/KeyboardShortcuts.html

3

Thank you Ken that’s great, I did search the help but I was looking in the histogram section. I did think to try the left / right keys, but nothing seemed to happen. Now though I can see it does move, but very slowly, I just did not notice before.

I note that the points only move a small amount when I press and release the key and the longer I keep the key pressed, the larger steps it moves, is that how it’s meant to work?

Mike

4

No, you are just stretching faster than the screen can render the new image and it just appears like it is going faster. The idea behind stretching is:

  • Apply auto stretching as base line (good enough for most folks)
  • Coarse movements: drag the arrows with the mouse
  • Semi-fine movements: Use the mouse wheel (or trackpad slider) → 100 ADU / increment
  • Fine movements: Use the arrow keys → 10 ADU / press
5

Ken,

Thank you, yes I can see how it works now, that’s just what I wanted :smile:

Mike

6

Sure. This has all been included in the help file for 2.4 as well.