PDA

View Full Version : additive vs subtractive

antonroland
12-07-2007, 11:31
Can anybody PLEASE give me a usable explanation of the difference between these!!:thumbs:
Marcel
12-07-2007, 12:02
One adds to....one takes away?

Yup, just confirmed with my daughter, they're still teaching it that way round in school :D

Just kidding mate :)
oldgit
12-07-2007, 12:04
They're opposites.
What are you wimbling on about... or are you being a muppet
h.r.ford
12-07-2007, 12:23
In what relation are you asking?
divine`
12-07-2007, 12:27
±
Marcel
12-07-2007, 12:31
They're opposites.
What are you wimbling on about... or are you being a muppet

Now now play nice or I won't let you watch Songs of Praise on Sunday.
pxl8
12-07-2007, 12:31
The simple version is:

Additive is like a computer screen - the more colour you add the brighter the result.

Subtractive is the opposite - the more colour you add the darker the result, eg. printed media, filters, etc.
Marcel
12-07-2007, 12:36
Thats the puppy, its sort of coming back to me now.

Cheers pxl8, I remember now.
chuckles
12-07-2007, 12:40
Add the three different primary colours of light you get white..... add their negatives (which is a subtraction) as pigments cyan, magenta and yellow yer gets yer Black.... simple...

With diagrams (http://www.sketchpad.net/basics4.htm) .... I is a smart Alec though cos I did know, honest! :clap:
antonroland
12-07-2007, 12:48
Cheers to Chuckles and Pxl8!

And :razz: :razz: :razz:
to the rest of you lot!

:lol: :lol: :lol:
Marcel
12-07-2007, 12:49
And :razz: :razz: :razz:
to the rest of you lot!

:razz: to you an' all then! I'm taking my ball home and I'm NOT PLAYING OUT.
Jonnyreb
12-07-2007, 12:53
AR, are you drunk already?

:p
mrgubby
12-07-2007, 14:24
AR, are you drunk already?

:p

Don't you mean still :rules:
Venomator
12-07-2007, 14:38
:lol: @ Reb & MrG ... :naughty:




http://www.xrtheme.com/content/emoticons/Avatars/08.gif
antonroland
13-07-2007, 05:28
AR, are you drunk already?

:p

:lol: @ You and Mrgub!

JR you are a deeply wicked man!
antonroland
13-07-2007, 05:30
P.S.

Renee not a single:razz: was at you though, just to be clear.

You at least bothered to ask what I was on about!


:D :D :D
Jonnyreb
13-07-2007, 08:02
JR you are a deeply wicked man!

You credit me with a dimension I don’t possess ;) :p
antonroland
13-07-2007, 11:02
You credit me with a dimension I don’t possess ;) :p

:eek: Do you possess any other dimensions?


:lol: :naughty: :D
Jonnyreb
13-07-2007, 11:17
:eek: Do you possess any other dimensions?


:lol: :naughty: :D

Nope- 100% pure, unadulterated vacuum :)
chuckles
13-07-2007, 15:40
Nope- 100% pure, unadulterated vacuum :)

But a vacuum has dimension ---- just no content! :lol:
Jonnyreb
13-07-2007, 17:34
smartass :D

and its dimensions are...........? :)
Arkady
13-07-2007, 17:47
we talking film processes here? Additive adds dyes to the emulsion i.e. Kodachrome; subtractive removes silver and leaves the dyes behind (which were already on the emulsion...(I think - it's been a while...), like Ektachrome (which was based on the old Agfachrome which the allies seized as part of war reparations at the end of WWII...)
chuckles
13-07-2007, 22:49
smartass :D

and its dimensions are...........? :)

Anything you want ..... still got nuffin' in it! :p
Jonnyreb
14-07-2007, 19:49
Anything you want ..... still got nuffin' in it! :p

:bang: :bang:

:lol: :lol: ;)

:p