Tuesday, March 12, 2013
Unleash Unlimited Depth Of Field
Use stacked focus to create images that overcome the bounds of optics for your macro shots and more
The capture process for the subject is identical to that of a close-up in which we want overall depth of field. However, we stop making captures once we reach the back of the subject (not the back of the composition). Often, this only takes two or three captures, depending on the magnification and depth of the subject. In my example, I made two captures, one focused on each of the flowers.
Whenever possible, I remove the subject from the composition prior to making my capture of the background. The reason I do this is that the blur of the subject, if left in the frame, would extend outside the border of the sharply rendered subject and eventually need to be cloned out.
Here's the step by step for processing the images:
1 Process the stack of subject images in Helicon Focus, then open the saved output image in Photoshop.
2 Open the background image in Photoshop and drop the subject image onto it.
3 Add a layer mask to the subject layer and make a selection of everything but the subject.
4 Fill the selected area of the mask with black to reveal the soft background image around your subject.
5 Adjust the mask edge as needed in the masks panel.
See more of Craig Blacklock's photography and find out about his books and workshops by visiting his website at www.blacklockgallery.com.
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