Talk:Digital holographic microscopy

History - Misleading/uncited content
The "History" section contains mis-leading and uncited content; notably
 * At the time, the market driving digital image sensors was primarily low-resolution video, and so those sensors provided only PAL, NTSC, or SECAM resolution. This suddenly changed at the beginning of the 21st century with the introduction of digital still image cameras, which drove demand for inexpensive high-pixel-count sensors.

This doesn't have much bearing on digital holography since the resulting still image sensors were covered with structures such as micro-lens arrays for (irrelevant to this application) low-light sensitivity, Bayer filters (for single-chip colour), etc. all of which destroyed quality imaging with coherent light. From my personal experience at the time, I'd say the growth in digital holography was enabled by that in industrial imaging and machine vision (that's where we looked for suppliers), which was itself enabled by improvements in computing in particular the PCI bus as a cross-platform way to efficiently get images into the computer in the first place. Consumer-grade sensor chips may have been for camcorders, but there was no shortage of higher-spec kit intended for astronomy. --84.51.139.208 (talk) 00:11, 31 August 2020 (UTC)


 * Similarly, "still lacked the required pixel count and density for digital holography to be anything more than a curiosity." looks a bit subjective. --Louis Knee (talk) 21:47, 15 September 2020 (UTC)
 * I notice the article on the Owen digital holocamera (1999) has screenshots reporting pixel counts of 512x512 or 486x786, about CCIR, and IIRC early videos from the Katz camera deployments (2007?) were 800x800. Implied claim that there's a required pixel count and density will need referencing. --Louis Knee (talk) 22:50, 23 September 2020 (UTC)
 * Also, as microscopy is just one application of digital holography I think it would make more sense to move the history from here to that article. --Louis Knee (talk) 20:27, 24 September 2020 (UTC)

Listing vendors
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--KMLP (talk) 05:35, 12 October 2010 (UTC)

Graphics
It is a bit unclear in the drawing what happens with the reference beam regarding the reconstruction. It almost seems as if the spherical wave of the reference magically turns into a collimated beam until it reaches the detector. - This should be clarified ... BoP (talk) 14:33, 23 December 2010 (UTC)

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