Friends of image editing watch out, today I want to tell you, why black and white is not the same as black and white. In the past I always thought that all black and white pictures are the same and it's no difference between different ways how to convert into black and white. But today I know: there are a lot of ways to get a bw picture and all the results are different. So today I want to show you the different types and I want to know how you convert your bw pictures. I choose a very colorful picture, because here you can see the differences pretty good. The best way to see them is when you just click on the picture and click through all of them.
|Originalbild / Original picture||Entsättigt / Desaturated|
Was mich an diesen beiden Arten der Umsetzung von einem Schwarzweißbild inzwischen stört, ist das man so keine Ahnung hat, was eigentlich hinter den Kulissen abgeht und man die Konvertierung einfach nicht beeinflussen kann.
In the past I always just desaturated the pictures when I wanted to have them in black and white, that means I just put the saturation regulator on 0. For me that was just the obvious way, because saturation is the intensity or colorfulness of a picture and the more you lower it the more it's getting "uncolorful". So with a saturation of 0 the picture is just grey, black and white.
Another pretty obvious way is the "greyscale" function. In Photoshop Elements and Gimp you can find it under Image>Mode>Grayscale. The picture is just minimal different to the desaturated one.
What I don't like on this two types is that you have no idea what's happening behind the scenes and that you can't affect the conversion.
|Graustufen / Grayscale||Rotkanal / Red channel|
The most of you may know that the three basic colors of a display are red, green and blue. Thats the so named RGB color model. You can use this model to get bw pictures, because you can decompose the picture in it's three channels. I don't know how to do this in Photoshop, but in Gimp it's pretty easy: Colors>Components>Decompose. Here I'm presenting you the three channels of my pictures, but what does this mean? On the light areas the color is pretty dominant on the dark areas it's not existing. So on this channel pictures you can see how dominant a color is in your picture. In my example red is pretty dominant and blue barely existing.
|Blaukanal / Blue channel||Grünkanal / Green channel|
Inzwischen nutze ich zum erzeugen von schwarzweiß Bildern eigentlich nur noch diese Methode, da man hier am meisten Freiraum hat und das Bild so gestalten kann wie man möchte.
Wie erstellst du deine schwarzweiß Bildern? Kennst du diese Variante?
Now the question is how you can use this trick for your benefits. All of those three pictures aren't the perfect bw picture. But in every image editing software there is a channel mixer. With this mixer you can decide about the dominance of the colors yourself and so convert a really good bw picture.
Meanwhile I only use this method to get black and white pictures, because it gives so much freedom and you can design your picture really good.
So how do you convert a picture into black and white? Did you already know the method with the channel mixer?
|Photoshop Elements In schwarzweiß konvertieren / Channel Mixer||Fertiges Bild / Finished picture|