 Babu M. Islam |
How can I get the picture background 100% white? camera), with white backgroud (using White cloth and white Paper under florescent light) and color object. The backgroud become 10% to 40% grey in color rather than white. It should be 100% white. Question:How can I resolve this problem?
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Adrienne I. Brand |
Cameras look for an 18% gray area to get a good exposure. If the camera only sees white, it'll change that white to look %18 gray. So find something in your home that looks gray and set the exposure to that - make sure you use the same lighting. (Have a computer? You could also draw an 18% gray box on a page, print the page, then set the exposure to that page.) After you set your exposure, shoot the real subject again.
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doug Nelson |
If you have already taken the shots and want to fix them, use the Magic Wand tool in Photoshop to select the background. (PLEASE keep an archived original before you do this). You may have to do this with one or several shades of the gray background. When you have made your selection, hit the delete key, and what you have selected should all go pure white. You may have to play with the Magic Wand to set the selectivity, as the shades of gray may intrude into the subject. If you can't get the Wand tool do do what you want it to do, select the background with the lasso tool, an excrusiatingly tedious process. I don't know whether Adobe's Elements provides these tools, but it MUST have some sort of selection tool array.
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Adrienne I. Brand |
Another option if you're going to go the Photoshop route: Image > Adjustments > Selective Color. Hit the tab and scroll down to "Whites." Then slide the "Cyan" nob to the left. Be careful that you don't go too far; you'll end up with too much magenta (red) in your whites.
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