2008Downing Twin: Revision history

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14 April 2025

  • curprev 09:0509:05, 14 April 2025 WikiSysop talk contribs 2,589 bytes +2,589 Created page with "== Citation == K. H. Downing and R. M. Glaeser, “Restoration of weak phase-contrast images recorded with a high degree of defocus: the “twin image” problem associated with CTF correction.,” Ultramicroscopy, vol. 108, no. 9, pp. 921–928, Aug. 2008, doi: 10.1016/j.ultramic.2008.03.004. == Abstract == Relatively large values of objective-lens defocus must normally be used to produce detectable levels of image contrast for unstained biological specimens, which a..."
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