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| This page contains images from the Helicon Focus image stacks using both the "Original images" and the "Hot pixeled images." The former are included just to show the importance of removing the hot pixels. ----------------------------------------- The image stacking program "Helicon Focus" performs two major functions to create a stack. The first is to scale and align the images. Scaling is necessary because the field of view changes as either the camera changes position or the focus ring of the lens is adjusted. The second is to pick, for any given point on the final image to be generated, which source image should supply the data. The "copy source" retouching function allows the user to override the programs choice. Both the "copy source" function and cloning were used in one small area of the image to correct a bit of "blue haze" near the lower left portion of the wasp. ----------------------------------------- One thing to notice in image stacks is the out of focus areas around the edges of the image. This is a result of the fact that the first image was taken at the furthest distance from the subject. Subsequent images were taken closer to the subject, thus with a smaller field of view that did not extend to the edges of the first image. This can be cropped off. |
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