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The Preview option allowed us to temporarily hide our adjustments in the document so we could view our original image. Does that mean we can't do that with an adjustment layer? It just means there's no actual Preview option, but there's still an easy way to do it. Click the same visibility icon again to turn the adjustment layer back on and view the image with your Brightness and Contrast settings applied.
This makes it easy to compare the two versions to make sure you're on the right track:. If that little eyeball icon in the Properties panel looks familiar, that's because it's the same visibility icon that's found in the Layers panel , and they both do the same thing.
Clicking either one toggles the adjustment layer on and off:. At any time, you can reset both the Brightness and Contrast sliders back to their default value of 0 by clicking the Reset icon at the bottom of the Properties panel:. With adjustment layers, there's never a need to do that because they remain forever editable, with no loss in image quality. To show you what I mean, I'll add a second adjustment layer to my document, this time choosing a Vibrance adjustment to boost the colors.
To add it, I'll click on its thumbnail in the Adjustments panel :. Since this isn't a tutorial on how Vibrance works, I'll just quickly increase my Vibrance value to around 30 and the Saturation value to Change the settings in the Properties panel.
Drag the sliders right to increase the level and left to decrease. Changes made will automatically apply to the image. After adding an Adjustment to an image, a new layer is created for the adjustment in the Layers panel. To delete an adjustment layer , click-and-drag the layer to the trashcan within the Layers Panel.
It now extends all the way across the tonal range from black to white without clipping a single highlight or shadow:. At this point, I'm happy with the results.
Remember what happened when I did this using the old version of the command? When we looked at the histogram, we saw that it had virtually disappeared, leaving only tall spikes on either side indicating that most of the image detail had been clipped to pure black or white. This time, with the new version, even though I've increased the contrast value to its maximum, we see no such problem in the histogram. With the old version, the image was completely destroyed at this point, looking more like a weird special effect than a retouched photo.
For important images, you'll want to stick with Levels or Curves to get things right. And there we have it! Check out our Photo Retouching section for more Photoshop image editing tutorials!
Get all of our Photoshop tutorials as PDFs! Download them today! Drag the Brightness slider towards the right to brighten the image, or drag to the left to darken it. The shadows have now been lightened along with everything else, decreasing overall image contrast. The histogram showing that every brightness value in the image has been lightened, clipping the highlights to pure white. Attempting to add more contrast to the image by dragging the Contrast slider towards the right.
The histogram showing even more image information being clipped to pure white. All that remains of the histogram after dragging the Contrast slider its maximum value. Little remains of the original image after dragging the Contrast slider all the way to the right.
Don't try this at home. Dragging the Brightness slider towards the right to increase image brightness. The light areas in the photo have been brightened without lightening the darker areas. This time, the histogram shows no clipping in the highlights even though the brightness level was increased even further.
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