How To: High Dynamic Range Processing using Photoshop CS2

[iceman]

Doug has kindly written a how-to article on High Dynamic Range Processing using Photoshop CS2.

You can see the article in the IceInSpace How-To (http://www.iceinspace.com.au/?projects) section, or directly by clicking on the link below:

High Dynamic Range Processing using Photoshop CS2 (http://www.iceinspace.com.au/index.php?id=63,294,0,0,1,0)

Thanks to Doug for writing the article.

If you'd like to submit a review or article or any other content for the site, please contact me.

[iceman]

Article updated

[[1ponders]]

Thanks Doug. I'm looking forward to having a chance to try the HDR out

[John K]

I have a question on this technique.

If the 3-4 images that you have are actually not 100% aligned, how can you combine the images but at the same time align them more accurately??

John K.

[gregbradley]

Use the move tool. Select the image you want to align first, then select the move tool now reduce the opacity to about 50% so you can see both images. Now move with your mouse cursor. When its close you can fine tune using the arrow keys on the keyboard. Blink the layer on and off to see if its exact if not adjust and reblink.

If you change focal length or there is distortion this will not work so well. You could register them in CCDstack first instead as that wil scale and rotate as part of the align process.

Greg.

[Octane]

Set one image's blending mode to Difference, then move to your heart's content.

H

[John K]

Thanks for advice guys.

My understanding is that in CS3 Photoshop wants to open the 3 separate files separately.

Based on the comments below, perhaps the ideas is to manually overlay and align the images, save them as separate files and then re-open them using the HDR function in CS3 so they are now aligned??

John K.