I usually run through just to see what comes out. But I don't think I have ever used it. It always seems more extreme and I bring in the black in levels when I want some of that. I find the areas I have a hardship with is the 180, with things being too bright.
Good point. Considering this through the process of limits, when a and b both approach 0, then indeed the limit is indeterminate. If a is significantly greater than b and b approaches 0, then a/b becomes larger as b, so a/b in this case is in infinity. Even when a is miniscule, as zero is an effectively 'infinite' value, a/b with b=0 surely still evaluates to infinity? In a computer, dividing by zero will throw up a 'divide by zero' exception, as it has no way of representing infinity or indeterminateness, which is why in Procedural Texture programs (which are effectively a series of constant declarations), I tend to add 0.001 to denominators. This also handles the 0/0 dilemma.
Please continue as your tutorials are appreciated. Nice to know “Why”, not just another tutorial telling you to do this and this to get this result.
Thank you. Very instructive
Good to know the theory as well as the practice!
Very clear explanation, sir. Thank you!
Very very good
Wonderful tutorial - again 😀👍
As always a wonderful video I love the mathematical approach to everything !!
You could be my new era Bob Ross, such a quiet voice
I usually run through just to see what comes out. But I don't think I have ever used it. It always seems more extreme and I bring in the black in levels when I want some of that. I find the areas I have a hardship with is the 180, with things being too bright.
Math is fun!
Technically, a/b where a>0, b=0 is undefined. Then, a/b where a=0 and b=0 is indeterminate. Neither is infinity.
Good point. Considering this through the process of limits, when a and b both approach 0, then indeed the limit is indeterminate.
If a is significantly greater than b and b approaches 0, then a/b becomes larger as b, so a/b in this case is in infinity. Even when a is miniscule, as zero is an effectively 'infinite' value, a/b with b=0 surely still evaluates to infinity?
In a computer, dividing by zero will throw up a 'divide by zero' exception, as it has no way of representing infinity or indeterminateness, which is why in Procedural Texture programs (which are effectively a series of constant declarations), I tend to add 0.001 to denominators. This also handles the 0/0 dilemma.
"computers have no idea what to do with infinity"
Who does?