Field of view definitionmicroscope

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Use the handy cheat sheet above to see this all for yourself. And make sure to keep us bookmarked for more great photography cheat sheets.

Field of view definitionscience

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Field of viewcamera

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For example, if I were to say: "I'd suggest using an ultra-wide field of view to frame this landscape," you'd know I'm talking about an ultra-wide angle focal length (35mm equivalent). But if I said, "I'm going to use a 16mm focal length to frame this landscape," you'd have no idea whether I was using a full-frame camera, an APS-C camera providing an equivalent 24mm focal length or if I'd already considered my APS-C camera's crop factor and was in fact using an 8mm lens… Discussing field/angle of view ensures everyone is on the same page, regardless of sensor size.

3. This magnifying glass is real 10X magnification which is the maximum magnification of big handheld magnifier and magnifying by two pieces of 5X bifocal optical lens.

To calculate the angle of view, set your calculator to use degrees before applying the following equation. If you cannot set your calculator to use degrees, you'll have to convert the radian value you're left with into degrees.

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Field of view definitionphotography

Calculating field of view becomes more important if you require extreme precision due to working at high magnifications. Deep space and photomicrography are two genres where calculating the best telescopes or the best microscopes field of view is advantageous, allowing you to work out, say, exactly what celestial objects you can fit into your frame.

Lauren is a writer, reviewer, and photographer with ten years of experience in the camera industry. She's the former Managing Editor of Digital Camera World, and previously served as Editor of Digital Photographer magazine, Technique editor for PhotoPlus: The Canon Magazine, and Deputy Editor of our sister publication, Digital Camera Magazine. An experienced journalist and freelance photographer, Lauren also has bylines at Tech Radar, Space.com, Canon Europe, PCGamesN, T3, Stuff, and British Airways' in-flight magazine (among others). When she's not testing gear for DCW, she's probably in the kitchen testing yet another new curry recipe or walking in the Cotswolds with her Flat-coated Retriever.

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Don't confuse field of view with depth of field, which has to do with how much of your observable scene is actually in focus. When we talk about view, it could be seen through your eyes, through the camera's viewfinder, or on a viewing screen. The term refers to the whole coverage of a scene, rather than one fixed focal point.

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What is FOV in games

What I like about the Omni Calculator is that – providing you enter your sensor's width, height and diagonal – it'll provide horizontal, vertical and diagonal AoV and FoV measurements.

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This is a tricky one to get your head around, because the two terms are often used interchangeably. But they are separate concepts and are calculated differently, however, they both convey how focal length and sensor size affect the framing of a scene, allowing you to draw similar conclusions. The key difference is that field of view illustrates the area a particular lens and sensor combination will cover in relation to the subject being photographed. Whereas angle of view is used to illustrate a lens and sensor combination's angular coverage, independently of what's being photographed.

Like angle of view, field of view can be measured horizontally, vertically or diagonally. But in most cases, it's measured horizontally to illustrate the field of view of a landscape-orientation image or vertically to illustrate the field of view of a portrait-orientation image. It's important to note that if you want to work out the horizontal or vertical field of view, you'll need to add the horizontal or vertical angle of view respectively, when following the equation (below).

Calculating the field of view is a little more complicated because a number of variables can alter the equation. Thankfully, you can get around this (and the angle of view equation) easily by using an online field-of-view calculator, like this one from Omni Calculator.

Field of viewcalculator

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Human eyefield of viewin mm

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Understand field of view in photography and how it relates to the focal length of the lens and the sensor size – the diagrams below shows you more

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1. Ergonomic handle/grip with anti-slip design to reduce palm and arm fatigue for long periods of use. Even if the elderly with finger arthritis use it, there is no problem.

You might also like to read: the exposure triangle explained, how to understand f-stops and our general Photography tips and tricks.

When we talk about field of view or angle of view, most of the time precise calculations aren't required. They're often used to help you choose the right focal length of lens to use for your photography. And it's this very reason why they're used interchangeably, given that they both allow the photographer to draw – more or less – the same conclusions.

Field of viewhuman eye

The angle of view is the maximum view a camera is capable of 'seeing' through a lens, expressed in degrees. The choice of focal length is key, with longer lenses offering a narrower angle of view. Digital Camera World has put together another guide to help you understand the relationship between focal length and angle of view.You need to consider sensor size, too. The angle of view can be measured horizontally, vertically and diagonally, but lens manufacturers often list just the diagonal, corner-to-corner angle. Focal length and sensor size affect the maximum angle of view possible – and the angles of view illustrated here are for lenses attached to a full-frame camera.

Field of view (FoV) is an important concept to understand whether you're a photographer or a filmmaker. When it comes to shooting, there's not only a question of what we're seeing in our image but how much of the scene we're seeing. That's where field of view comes in. However, field of view is closely related to – and very often confused with – angle of view (AoV), so I'm going to bust that myth right here, outline the differences and explain how you can calculate both.

Field of view is simply the observable area that you can see either through your eyes or an optical device, such as a camera lens or telescope. The official definition according to Wikipedia is "the extent of the observable world that is seen at any given moment".

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The 10x magnifier has super Bright LED lights provide evenly lit and clear sight in the dark. Two brightness levels are controlled by power switch which give you ideal light under different circumstances.

Angle of view is favored by lens and camera manufacturers over field of view, because it doesn't change in relation to the working distance (the distance from the subject to the front element of the lens). And while angle of view can be measured horizontally, vertically or diagonally, manufacturers tend to stick to the latter. To calculate field of view, it helps to know the lens and camera combination's angle of view.

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