OptoWiki Knowledge Base
The Knowledge Base for Technical Optics, powered by
Lensation
Menu
Skip to content
Home
Glossary
Glossary: A-B
Abbe-Method
Abbe-number
Airy-Disk
angular
Aperture angle
aperture value
back focal length
Barrel Distortion
Bayer Pattern
best form lens
BFL
Binary Image
Blue Shift of Bandpass Filters
Bokeh
Blog
Can I increase the DOF by changing the focal length, if FOV and brightness are constant?
Little siblings: s-Mount lenses as replacement for c-mount lenses
Comparison: c-mount lenses vs. s-mount lenses (M12x0.5)
Book
Chapter 01: Introduction
Chapter 02: Basics
Chapter 03: Hostile Brothers – incompatible properties of lenses
Chapter 04: Dangerous Half Knowledge
FAQ
FAQ : Objectives
Why do we use the focal length to describe a lens and not the viewing angle?
What’s the difference between zoom lenses and vario lenses?
How to tell which sensor size a zoom lens was designed for?
Can s-mount lenses replace c-mount lenses in general?
Can s-mount lenses be as good as c-mount lenses?
What are the features of rear converters?
What is the CRA (chief ray angle)?
FAQ: Practice
How to calculate the length of needed distance rings?
How to focus a lens at two distances at once?
How to determine the focal length that results in a 1:1 mapping?
FAQ: Resolution
How to read an USAF1951 target?
Why can color cameras use lower resolution lenses than monochrome cameras?
FAQ: Conversion
How to convert diopters to focal length?
How to convert focal length to diopters?
How to convert pixel size to line pairs per millimeter?
How to convert line pairs per millimeter to pixel size?
How to convert Numerical Aperture to F-Number?
How to convert optical inches to image circle diameter?
How to convert pixel count and size to Inches?
FAQ: Geometrical Optic
How to determine the position of the image of an object point?
How to tell whether a lens singlet is converging or diverging?
Trouble Shooting
Symptom: Colors different on left and right side
Symptom: Field Of View changes from lens to lens
Symptom: I can’t focus my lens to infinity
Symptom: Image is darker at the Rim of Bandpass Filters
How to convert pixel size to line pairs per millimeter?
Symptom: Low Contrast when using Telecentric Lenses of Coax Type
Symptom: Pink Image
Symptom: Purple rim around dark objects
Symptom: Unsymmetrical Image Brightness
Calculators
2
A
B
C
D
E
F
G
H
I
K
L
M
N
O
P
R
S
T
U
V
W
Ob
Od
Op
Or
Opl
Opt
Optimal Aperture
F# with the largest possible
DOF
.
Larger F# reduces the DOF due to diffraction
Post navigation
←
Pinhole Camera
Diffraction Limit
→
