Focal Length

For the special case of a thin lens in air, a positive focal length is the distance over which initially collimated (parallel) rays are brought to a focus, or ...

Understanding Focal Length - Nikon

Lens focal length tells us the angle of view—how much of the scene will be captured—and the magnification—how large individual elements will be. The longer the ...

Understanding focal length in photography - Canon Georgia

Here's all you need to know about focal length, the difference between wide-angle and telephoto lenses, and how to get even more reach from your lenses.

What Is Focal Length in Photography? A Beginner's Guide

Focal length measures the distance, in millimeters, between the “nodal point” of the lens and the camera's sensor.

What is Camera Focal Length? - PhotoModeler

The focal length number tells us how much of the scene is captured in the picture. The lower the number the wider the view, and the more we can see.

What is lens focal length in photography? | Adobe

Focal length = the distance from the subject to the lens + the distance from the lens to the camera sensor. You also need to understand if your lens is concave ...

Understanding Focal Length and Field of View - Edmund Optics

The focal length of a lens is a fundamental parameter that describes how strongly it focuses or diverges light.

How Different Camera Lenses Will Affect Your Portraits - YouTube

Understand the focal length: Different focal lengths in portrait photography can affect the composition and perspective of the subject.

Focal Length of a Lens - HyperPhysics Concepts

For a thin double convex lens, refraction acts to focus all parallel rays to a point referred to as the principal focal point. The distance from the lens to ...

Understanding Focal Length and How to Use It

Focal length is the distance measured in millimeters, between the optical center of the lens and the camera sensor, where the light information is recorded.

Focal Length Effects | Four Bricks Tall

Field of View. A lens with a shorter focal length like 30mm will have a wider field of view than a lens with a longer focal length like 70mm. A lens that has a ...

Basic Photography 101: Understanding Focal Length in Camera ...

The focal length of a lens determines what your camera can focus on, and how your images are going to turn out.

Focal Length - StatPearls - NCBI Bookshelf

Focal length is the distance between the lens and the focal point, where the light rays converge or diverge.

Focal Length and F-Stop Explanation - Paragon Press

It is the distance from the lens to the film, when focused on a subject at infinity. In other words, focal length equals image distance for a far subject.

Understand Focal Length in 5 Minutes - Improve Photography

I'll do my best to explain it in 5 minutes or less. I'll start with the most basic information and then build up to the more advanced stuff.

To be a Better Photographer, Understand Lens Focal Length

Focal length is a number represented in mm that tells you the angle of view that your lens will capture. The lower the focal length number, the ...

ELI5: What exactly does "focal length" measure in lenses? - Reddit

The focal length refers to where the lens will focus light rays coming through it. If a lens is 50 mm focal length, the distance between the ...

Focal Length - YouTube

The focal length is the distance between your camera's sensor and the optical center of the camera lens. If you have a longer focal length, ...

How Focal Length effects Perspective in Photography

Changes in focal length of a camera lens does not directly influence perspective. An alternative, but equivalent statement would be: All other things being ...

Ask the staff: Pick one focal length or lens to rule them all - DPReview

If you could only shoot with one lens, or one focal length for the rest of your life, what would you choose? Feel free to share your answer in the comments!