I photograph gemstones and I need some help with the pictures. I need to change the background to a different color. Do you know the best way to do this. I have done it in the past but i am left with a picture of a gemstone with the edges a little off color (if I us the wand,which doesn't always work) . I am pretty new with Photoshop 7.0. Thank you in advance.
The problem lies in the transparency of the gemstones. When you select the background with the Magic Wand tool you'll inevitably select some of the edges where the background color shows through. Accurate selections quite often will require more than one tool to do the job. Try this.
- Start by photographing the stone on a contrasting color like Green or Blue. That will make the selection process a little easier.
- Select the Magic Wand.
- Set the Tolerance option to a low number like 10 or so.
- Click anywhere on the background to select it.
- With the selection active, choose Layer > New Adjustment layer > Hue-Saturation
- The New Layer dialog box appears.
- Name the New Layer.
- Click OK.
- The Hue-Saturation dialog box appears.
- Select the background color you used (green or blue)from the Edit dropdown menu.
- Select the Colorize option.
- Drag the Hue slider to change the color of the background.
- Adjust the Saturation and Lightness settings to meet your needs.
- When you're satisfied, click OK.
An Adjustment Layer is created in the Layer pallette. The color adjustment is isolated to the pre-selected background area indicated by a black and white Layer Mask.
Click below to learn how to fix a layer adjustment that "bleeds" into the gemstone by editing the Layer Mask.