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Stacking photoshop layers concept vs using ND filter
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<blockquote data-quote="Blade Canyon" data-source="post: 584788" data-attributes="member: 15302"><p>Could one increase sharpness by stacking images from a stationary shot? I saw a comment on an article about sharpness. Here is the comment:</p><p></p><p>"If the target has a lot of air between you and it and it is stationary, shooting ten or more exposures and then digitally stacking them produces a dramatic improvement in clarity and sharpness. This is a routine procedure in astrophotography. The image clarity will increase with the square root of the number of exposures stacked. Stacking also tends to eliminate the grain noise from the image as the noise is random and tends to cancel out with multiple images. The whole purpose in stacking is to increase the signal to noise ratio."</p><p></p><p>I would think the variations over the 10 photos would increase blur, not sharpness. How do you stack to increase sharpness?</p></blockquote><p></p>
[QUOTE="Blade Canyon, post: 584788, member: 15302"] Could one increase sharpness by stacking images from a stationary shot? I saw a comment on an article about sharpness. Here is the comment: "If the target has a lot of air between you and it and it is stationary, shooting ten or more exposures and then digitally stacking them produces a dramatic improvement in clarity and sharpness. This is a routine procedure in astrophotography. The image clarity will increase with the square root of the number of exposures stacked. Stacking also tends to eliminate the grain noise from the image as the noise is random and tends to cancel out with multiple images. The whole purpose in stacking is to increase the signal to noise ratio." I would think the variations over the 10 photos would increase blur, not sharpness. How do you stack to increase sharpness? [/QUOTE]
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Stacking photoshop layers concept vs using ND filter
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