Why You Should Probably Use s. RGBWhen I first started using Adobe Camera Raw, one of the options I experimented with was which color space the resulting JPEG should be in. Not thinking it mattered, I selected “Adobe RGB (1. However, a few days later I suddenly realized that the images looked different in a browser than when I had saved them in Photoshop. The once rich and vibrant colors were gone, and what I saw were images that were washed out and desaturated. After looking into why this happened, I found out that the problem had to do with color space. Color Spaces. So what is a color space anyway? Basically, it’s a specific range of colors that can be represented. The CIE's color matching functions, and are the numerical description of the chromatic response of the observer (described above). They can be thought of as the spectral sensitivity curves of three linear light detectors. Performance. Memory usage This depends on your available RAM but I usually let Photoshop use 70% of total available memory. This is enough for my system to do multitasking and not choke if I have other apps open simultaneously. Hey I am not surprised, since Adobe purchased Macromedia then discounted Freeehand. Adobe could care less about designers, because thousands of Freehand files are ghosts of the graphics world. I purchased Freehand in college. With relatively low color depth, the stored value is typically a number representing the index into a color map or palette. The colors available in the palette itself may be fixed by the hardware or modifiable within the. JPEG images offer the same number colors no matter what color space you use, with the difference being the range of the colors that can be represented. In other words, s. RGB can represent the same number of colors as Adobe RGB, but the range of colors that it represents is narrower. Adobe RGB has a wider range of possible colors, but the difference between individual colors is bigger than in s. RGB. To illustrate this, I’ll use a simplified example. Suppose my color space consisted only of blue, and I could have a total of 3 possible colors. Modern digital cameras can capture a far wider range of colors and so if you use sRGB you may be losing color from your images. However, the big strength of sRGB is that most web browsers assume all images are sRGB, so. Since over 5 years we were using Adobe RGB as our color space. Today we switched over to ProPhoto RGB. Here is why? Note: We followed the discussion about ProPhoto RGB for quite some time. Yesterday we had a. Lets say I chose to use the following “color space”: Now, maybe I would like a wider range of colors to work with for one reason or another. Though I can’t increase the number of colors I can represent, I can increase the range by spreading the colors farther apart. The resulting color space might look something like this: Notice how I was able to capture a wider range (or gamut) of possible colors without increasing the number of colors. In both “color spaces”, I’m limited to 3 colors. In the same way, Adobe RGB captures the same number of colors as s. RGB but offers a wider range of colors by spreading the colors out more. RGBs. RGB is pretty much the default color space everywhere you look. This means that most browsers, applications, and devices are designed to work with s. RGB, and assume that images are in the s. RGB color space. In fact, most browser simply ignore the embedded color space information in images and render them as s. RGB images. Pros. Displayed consistently across all programs. Simplifies workflow. Suitable for normal prints. Most people can’t tell the difference anyway. Cons. Narrower range of colors than Adobe RGBCan’t obtain benefits of Adobe RGB later down the road. Adobe RGB (1. 99. As I explained earlier, Adobe RGB represents a wider range of possible colors using the same amount of information as s. RGB by making the colors more spaced out. Since s. RGB has a narrower range of colors than Adobe RGB, it cannot display certain highly saturated colors that could still be useful in certain applications, such as professional- grade printing. Thus, photographers and graphic artists that need this extra color range for specific purposes would choose Adobe RGB over s. RGB. Pros. Wider range of colors than s. RGBBetter for professional prints. Can always obtain benefits of s. RGB later down the road. Cons. Will be displayed incorrectly by most browsers. Complicates workflow. Which to Use. First of all, if you publish your images on the web, you should always save and publish them as s. RGB. This is because most browsers will render images as s. RGB regardless of what you save it as, causing Adobe RGB images to appear desaturated and washed out (the problem I was experiencing). Thus, if you want your images to look the same regardless of where it’s being displayed, you should always publish them as s. RGB. This makes it so what you see when you save is what you get when it’s displayed. Thus, the question becomes, “what color space should I work with and save images as?”. This is more tricky, and generally depends on your workflow and what you use your images for. If you work with 1. Adobe RGB. This preserves the extra color information that would be lost if you saved as s. RGB, just like the extra information in RAW files is lost if you save them as JPEGs. In this case, it’s not the amount of data that’s lost, but the range of colors. If you might need the wider range offered by Adobe RGB anytime in the future, then you should work with and save your images in Adobe RGB. If you save your images as s. RGB, you cannot convert it to Adobe RGB in the future to obtain the wider range of colors. However, the advantage of working in s. RGB is that it simplifies your workflow. You don’t need to worry about color spaces at all if you’re only going to publish your images to your Flickr or personal photoblog. All you need to do is save the s. RGB images and upload them to the web, and they will look fine. Conclusion. Unless you know specifically you want to work in Adobe RGB, make sure all your devices and programs are set to work in s. RGB. Otherwise, you might find out one day that your images look horrible on other people’s browsers! I found this out the hard way. Image credit: Clock Study #4 by David H- W (Extrajection).
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