Stacking Images For Editing Photo Tips

Stacking Images For Editing Photo Tips

In the series of three photographs shown above, the first two have the same subject photographed in a very short time away but focusing in the first case on the head, in the second case on the wings. The Photoshop the photographer has so combined the two photographs obtaining the result shown in the third. As we see, the fly did not move which allowed us to avoid any kind of shake-that would otherwise invalidate the final result.

Obviously there are the precautions to be taken to use this ranking technique:

the use of a heavy stand. It must be heavy.
The use of an aperture of f / 4 is recommended: prevents the diffraction and the shallow depth of field does not interest us.
the use of a shutter remotization
maximum precision and sensitivity in maintaining but changing the focus: you do not move the camera even half a millimeter (from which the first point)
The subject must be stationary, motionless. Otherwise shake-time

After making the shots, you have to go to their work There are two ways forward: the first is called Photoshop. The second is given by a series of free software specially created for this purpose, as the Combine.

Combine on there is very little to say, the software is very intuitive and quick. Once the images are loaded, you may need to help the program to align the photos (usually does an excellent job automatically) after you leave work. Ease of use, however, was affected with the final image quality. We have worked with the JPEG file, and then the final quality that can not be lower than that of origin. This also means having a series of artifacts in the image, artifacts that must be corrected with a more powerful photo editing software: other decay in quality.

The best solution but also the most costly in terms of time and skill, is to use Photoshop. Although the known program has an ad hoc scripts for stacking: try to go to File Menu> Scripts> Load Files into Stack.

The stacking of the images, then, becomes important when we particularly limited focus area, we can not increase it, and we do not want parts of the subject is out of focus: to solve, the photographer takes a series of photographs by changing the focusing point focus “moving” gradually to cover the entire area. The number of photos depends on how long you want to then spend the postproduction: two clicks are sufficient in most cases but for subjects to be printed in very generous in size may not be enough.

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