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RGB versus sRGB
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The Adobe RGB is a professional color modality that was inserted in 1998, while the sRGB is the color standard that is used in computer monitors, multimedia device, scanners, etc. being inserted in 1966, their actual denomination is sRGB IEC61996-2.1. The main difference among both is that Adobe RGB has a much more color spectrum that the sRGB. However, we should also remember that RGB was developed to be used inside a graphic professional environment as Photoshop. Most of the digital cameras are setted by default in the sRGB color selection mode. However, DSLR of high range (Canon, Nikon, etc) uses the option RGB by default. My recommendation would be that you shoots in RAW and AdobeRGB colour mode, but you can find that, when installing Photoshop if you don't manage its color space as RGB and stays in default sRGB, when opening the pictures these appears poor of color, low contrast and unsaturated. In Photoshop go to Edition, Color Adjustments, Working Space and select Adobe RGB (1998) and you already have solved the problem; now, the following images you open up will show correctly. This problem can also find too if you use search and store applications, as ACDsee, Google Picasa, Irfanview, etc. Nevertheless, none of the browsers web that I know, (Explorer, Netscape and Mozilla) supports the mode RGB, then if we want to upload our pictures to a web page, we would already have to change them to sRGB so that displays correctly. We have the option, also, if it is our only purpose, in shooting in sRGB mode directly, keeping in mind that the edition possibilities in any image-editing program decrease drastically. In addition, if we want to print in a lab our pictures, we should know they all work directly in sRGB by default, and it is necessary to notice them about the capacity to manage Adobe RGB and even CMYK (used by lithographs and printings). Nevertheless, the colors in sRGB will seem more alive and saturated in your monitor that is what really imports: as they are to show in internet or a web page it is the format in which should be. My final recommendation would be if you are going to work with 16-bit images, and they will suffer a deep edition in the computer, sure uses Adobe RGB, if you work 8-bit images you can use the sRGB directly. And now to tell you that we are not error-free if
we use RAW and Adobe RGB (this combination allows a bigger correction
latitude), but if you make exposure big mistakes or you saturate the
subjects with a Star Wars flash in jpeg mode, that doesn't have solution
and don't blame anybody for it.
© 2008 Juan Parménides. Derechos Reservados. All Rights Reserved |