Focal length calculator
35 mm equivalent focal length - Wikipedia
Lens Calculator | Focal Length | Working Distance | Field of View
Focal Length Lens Calculator - Ricoh International B.V.
Field of View Crop Factor (Focal Length Multiplier)
CCD Focal Length Calculator
Field of View Calculator | Channel Systems
Optical basics
Sensor's size, crop factor and GSD in photogrammetry | Metrical Talks
Imaging System Parameter Calculator | Edmund Optics
Learn | Field of View & Angular Field of View | Teledyne Princeton Instruments
CCD Focal Length Calculator
Lens Calculator | LUCID Vision Labs
How to choose the right lens for your embedded camera application – e-con Systems
Crop Factor Calculator
What is Crop Factor? Here is What You Need to Know
Calculators – Lensation GmbH
Field of View Calculator | Channel Systems
Machine Vision Lens Calculator | Teledyne FLIR
Lens Selector | Machine Vision Lenses | FUJINON | FUJIFILM
Light Vortex Astronomy - Article: How to Very Accurately Calculate your Telescope's Effective Focal Length
Camera Lens Focal Length Calculator | Lens EFL Calculator
Simplified Guide to Field of View (FOV Calculation)
