Photoshop CS3 Tutorial
How to Create HDR Images in Photoshop
High Dynamic Range (HDR) images allow you to capture images closer to the way your eyes see the world. On a sunny day you are able to see the shadow and highlight detail. The camera clips the highlights and shadows by driving the highlights to white and the shadows to black.
Your eyes see 10-stops of information and your camera captures only five. HDR does a very good job of making up the difference.
With your camera on a tripod, take a series of images without altering the focus and aperture settings.
Adjust the shutter speed and capture several images in one-stop increments (i.e., 1/60, 1/125, 1/250, etc). Take five images total (-2, -1, 0, +1, +2).
In Photoshop, open your images (File > Open) and choose File > Automate > Merge to HDR.
In the dialog box choose Use Files and click the Add Open Files button. Attempt to Align Source Images should be checked. Click OK.
In the next dialog box, change the Bit Depth to 16 and click OK.
Set the Method to Exposure and Gamma. Start with Exposure, then adjust the Gamma slider and click OK.
If the image still needs a final adjusting, add a Curves adjustment layer and paint areas of the adjustment layer mask with black or white to complete the image.
Another great software choice for HDR images is Photomatix Pro. For more information, visit www.hdrsoft.com.