https://cropfactorcalculator.com/
Crop Factor Calculator – Equivalent Focal Length & Aperture
Free crop factor calculator. Find the equivalent focal length and aperture for any sensor size — full-frame, APS-C, Micro Four Thirds, medium format, and more.
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https://petapixel.com/2013/06/15/a-mathematical-look-at-focal-length-and-crop-factor/
A Mathematical Look at Focal Length and Crop Factor | PetaPixel
Feb 7, 2023 - I'm hoping this post can explain a lot of the confusion beginning photographers have about focal length and crop factors. Some understanding of basic
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https://digitalcommons.unl.edu/ardhistrb/310/
"Transpiration as a Factor in Crop Production" by T. A. Kiesselbach
The object of experiments reported in this bulletin has been to determine principles according to which water is used by crops. In many agricultural districts,...
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https://cropwatch.unl.edu/2024/heat-factor-recent-crop-water-usage/
Heat a Factor of Recent Crop Water Usage | CropWatch | Nebraska
Nebraska Extension Educator Gary Stone shares an update on crop recovery after recent severe weather and crop water use estimates for this week as temperatures...
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