Comment 4 for bug 171631

Originator: YES

I find that the linear scale looks fine when you look at the whole thing,
but when you compare the individual adjacent steps, the linear scale has a
lot more visual difference between adjacent pairs at the top than lower
down. To me, the quadratic scale looks even throughout (although admittedly
you have to zoom to 2:1 to see the difference between the top pair). I've
attached an improved example which makes the benefit very clear cut in my
opinion, and I will now post to the list.

As for the spinner, I did not imagine it as containing percentages. It
would contain the actual scalar standard deviation. So 5.0 could be halfway
on the slider for a small object or only a fraction of the way on a big
object. The slider might work as now except it would put the computed s.d.
into the spinner rather than the equivalent percentage. Users could copy
and paste that value with the expected results.
File Added: blur_scales.svg