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On this page we provide a list of calculators, which are useful for lenses

• DOF calculators
• Focus and F# from DOF for long distances
• DOF given. Adjust focal length, F# and CoC
• DOF of Telecentric lenses from Image side F#, CoC and Magnification
• DOF of Telecentric lenses from object side NA, CoC and Magnification (interactive!)
• Compare the DOF of two lenses

• Depth of Focus calculator

• Hyperfocal Distance Calculator

• Blue shift calculators

• Optimal Aperture calculator
• Diffraction Limit

• Extension Rings from Object Distance and Focal Length
• Extension Rings from Object Distance and Focal Length (interactive!)
• Extension Rings from Sensor Size, Object Size and Focal Length
• Additional Extension Rings from current and future Object Distance and Focal Length

• Focal length from object distance and image distance
• Focal length from sensor size, object size and object distance
• Focal length from Angle and sensor size
• Focal length from two objectsizes, image sizes and Object-Sensor-distances

• Principal planes from two object sizes, image sizes and Object-Sensor-distances

• Object distance from focal length and image distance
• Object distance from magnification and focal length
• Image distance from focal length and and object distance
• Magnification from sensor and object size

• Aperture angle from sensor size, extension rings and focal length

• DIY Pericentric lens from a Fresnel lens and an entocentric lens
  
• Scheimpflug-Rechner
  
• Optical Inches to Image Circle Calculator
  
• Pixel count and size to Inch Calculator
• mrad – degrees Calculator