(Created page with "mage aquisition tips: any camera can do BUT higher resolution = higher model detail always shoot raw - process if necessary - export tiff / jpeg use fixed focal length / 24mm...") |
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Revision as of 07:21, 4 November 2022
mage aquisition tips:
any camera can do BUT higher resolution = higher model detail always shoot raw - process if necessary - export tiff / jpeg use fixed focal length / 24mm - 50mm recommended if variable zoom then keep it always at minimum or maximum length and don’t change it while shooting constant aperture f/5.6-8.0 (f/11 max) keep whole object in focus iso as low as possible 100-800 diffuse light - no hard shadows! camera orientation depending on subject - fill the frame increments of 10-15 degrees between pics overlap two thirds / 60% of last pic no over- or underexposed pics use gray card / color checker if necessary use printed measurement markers / tennis balls for big scenes / or when footage origin differs use tripod when low light or turntable shoot from as many angles as possible, up to down and around always take more pics than necessary
Calibrated Photogrammetric Scale Bars (as an example, regarding targets) http://culturalheritageimaging.org/What_We_Offer/Gear/Scale_Bars/index.html
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Origins of Photogrammetry
Albrecht Meydenbauer https://de.wikipedia.org/wiki/Albrecht_Meydenbauer
Aimé Laussedat https://en.wikipedia.org/wiki/Aim%C3%A9_Laussedat
Camera Lucida https://neolucida.com/history
Stereo photography http://camera-wiki.org/wiki/Stereo https://en.wikipedia.org/wiki/Stereoscope
Aerial photogrammetry https://www.researchgate.net/figure/Figure-12-Illustrate-the-geometry-of-aerial-photogrammetry-13_fig1_334164581 https://en.wikipedia.org/wiki/Stereoplotter