| 1. | The effective aperture is reduced by vignetting at angles above ?0?
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| 2. | :Normally I'd expect vignetting to be the issue.
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| 3. | This vignetting became a trademark of his work in publication.
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| 4. | Vignetting is often an unintended and undesired effect caused by camera settings or lens limitations.
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| 5. | All DA lenses can be mounted on Pentax film bodies, albeit with increased vignetting.
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| 6. | Vignetting, barrel distortion and chromatic aberration are also problems that are difficult to eradicate.
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| 7. | This can lead to pixel vignetting.
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| 8. | Such lenses will give noticeable vignetting if used on a 35mm film or full frame sensor cameras.
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| 9. | At fast aperture sizes ( up to f = 2.8 ) there is visible vignetting.
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| 10. | However, many PC lenses require a small aperture setting to prevent vignetting when significant shifts are employed.
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