# Questions tagged [field-of-view]

Questions about how much of the scene a camera can see, and what can affect how much is seen.

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### Calculating the new coordinate of a point in the camera field of view after rotating the camera around the z -axis [closed]

I am trying to do some computer vision task that involves moving the camera along a scene in 3D max, the camera should move in each step a certain distance from its current location ( Xc, Yc, Zc) to a ...
2k views

### As a blind person, how can I better understand how wide or narrow a field of view is?

I saw this question but feel that it doesn't fully explain how this works. I am completely blind, so I am trying to come up with a tactile pictorial representation of how field of view works. ...
73 views

### Why does changing aperture change field of view in my reverse-lens macro setup?

I have a reverse lens macro setup, with a reversed 35 mm lens attached through an adapter to a 80-200 zoom lens. I have the following issue: changing the aperture setting on the zoom lens changes the ...
121 views

### angle of view and distance from subject calculation for a smartphone

I would like to calculate the angle of view of a photo taken by a smartphone, in order and estimate the distance from a subject of a specific size. Let's do calculation for a Samsung S7, which has a ...
479 views

### How do fixed lenses “focus” on things at different distances? [duplicate]

I'm trying to understand depth of field and I'm struggling. If I'm playing with a 50mm fixed lens, and I alter its focus using the little ring around the lens, what is actually changing in terms of ...
377 views

### How to find an angle and a distance for clicking picture of a distorted artwork to achieve 3D effect?

If you know about 3D pencil artworks, you would know people draw it distorted (generally length is enlarged i.e., stretched from bottom to top) first and then click a picture at some angle (30-40 ...
173 views

### How do I calculate how high a camera needs to be to fit an object in the frame based on its field of view?

I'm doing a computer vision application related to snooker for my dissertation. In a section of my report, I’m talking about cameras and it would be good if I’m able to do the calculation stated above....
128 views

### Does field of view change for different lens model for the same focal length?

I am using two lenses - Tamron 75-250mm F/3.8-4.5 Model 104A and AF-P DX NIKKOR 70-300mm. When shot with lenses set to 250mm of focal length, the field of view for the Tamron lens is greater than the ...
217 views

### What attachments to get shallow depth of field with a smartphone?

I'm doing a research project involving machine vision, and would ideally like to find a lens with a shallow DoF (perhaps about 2m or so in-focus) that can be attached to a smartphone. Something that ...
128 views

### (How) were FoVs discussed before the 35mm became de-facto standard?

Ever since the 35mm small frame gained popularity in the mid-1900s it's well known (and perhaps lamented) the particular crop factor became a de-facto standard by late 1900s when people discussed ...
1k views

### Calculation of Distance of an object given the field of view of camera [duplicate]

I am using an Olympus M. Zuiko 45mm f/1.8 Camera, I have to calculate the distance at which the lens should be present so that it captures the complete object at once. I know that the field of view ...
946 views

### Field of view using 50mm APS-C lens on APS-C body vs 50mm FF lens on FF body? [duplicate]

I am taking 2 pictures using: Nikon D3400 APS-C sensor and an APS-C kit lens, 18-55mm set at 50mm Nikon D850 full frame camera and a full frame lens 50mm that is designed for full frame Nikon ...
841 views

### Why are lenses characterized by focal length and not the effective field of view?

In photography, it's the accepted norm to say that if you know the sensor size of your camera and the focal length of your lens, then you know the field of view of your system. However, in optics, it'...
264 views

### Pixel diameter of a given field of view calculation equisolid (equal-area) fisheye lens

I have a 180° equisolid (equal-area) fisheye lens with a focal length of 8 mm. I want to crop images to a circle defined by an angular field of view from the zenith angle of the lens (i.e. the middle ...
178 views

### How is wide field-of-view possible using a tiny sensor?

From looking at the FOV tables on this page, I can see that FOV is greatly reduced as sensor size decreases. It seems that 1/2.3 sensors would produced fields-of-view that are tiny, even at the ...
498 views

### Diagonal Angle of View given Horizontal or Vertical angles of view for equidistant lenses

I am struggling to find the correct mathematical relation between the horizontal and diagonal angle of view for a given aspect ratio for equidistant lenses. For rectilinear lenses, it is possible to ...
803 views

### Why is the field of view angle from exiftool different from Apple's official values?

I have two series of photos shot on my iphone 6s on 10.3.2. The first series is in the regular frame, and the second series is in the "square" frame. I'm using exiftool 11.01 on macOS 10.11.6. From ...
218 views

### Distortion towards the edges/corners of the field of view in an image

I am taking a picture keeping the camera horizontally in landscape mode from a height of roughly 3-4 ft, acquiring the top-view of the scene. It was seen that the objects placed towards the centre of ...
1k views

### What is the typical FOV / focal length for house interior shots?

I don't do interior shots, but I do see a lot of them these days because I am house hunting. If you look at high end houses on Redfin.com, you can see typical examples done by professional ...
6k views

### Finding focal length from image size and FOV

I have bumped into this statement in an Engineering journal. The statement is mentioned on right side example. A 640x480 image with a horizontal FOV of 47 degrees gives focal length f = 740 pixels. ...
118 views

### How to calculate which system will work better for me?

For all intents and purposes assume I am using the same 400mm lens, which would give a me better resolution of the subject (bird)? A 50% crop of 42 megapixel Sony a7riii Fullframe A full crop of 20.3 ...
324 views

### How to enlarge an object by x-times with an optical zoom

My camera employs a 30x optical zoom, with focal length ('f' from here on out): f = 4.3 mm to 129 mm. If I am at 1x and I see an object as 100 pixels, to enlarge it to 150 pixels, can I set the zoom ...
431 views

### Focal length, sensor size and field of view in digital photography

For a robotics project, I've been testing two cameras 1)ELP USBFHD04H, sensor AR0330, 1/3 inch 2)ELP USBFHD06H, sensor Sony IMX322, 1/2.9 inch Besides, I've been testing different lenses, all of ...
1k views

### When do straight lines become curved when talking about projection?

This in not a question directly pertaining to photography, but the theory of projection in general. Imagine that I'm drawing my surroundings, say, in a city with straight lines everywhere. I start ...
659 views

### Why do my camera's specs give a 120 degree angle of view when I calculate it should be much narrower than that?

I have a camera with these specs Image sensor = 1/4' OV CMOS Sensor Image Resolution: 1280*1024,640*480,320*240,160*120 Focal Length: 2.8mm Angle of view: 120 Since it's a 1/4 CMOS i got the width ...
703 views

### How to measure field-of-view of a camera with fisheye Lens? [duplicate]

For a camera with a rectilinear lens a simple measurement would consist of taking images from known distance of an object of known size. For example using a sheet of paper as an object set on a wall ...
789 views

### How do I calculate the change in HFOV and VFOV as Object Distance changes?

Let's assume that I have the following camera parameters confirmed: Focal Length F/# Coc And a Lens Focusing Distance (the focus distance it was optimized to in the manufacturing process of the lens)....
7k views

### How to calculate the Horizontal and Vertical FOV (in mm)

I am having some trouble finding a standard way to calculate the horizontal and vertical field of view of an image based on a set of initial input parameters. I do have values for the following ...
266 views

### Picture in Picture with distance in perspective

I have two cameras with the same specifications placed one in front of the other level and horizontal. I know the distance between them and the height of each camera. I want to create a picture-in-...
328 views

### Understanding Lens Viewing Angle and Focal Length Relationship [duplicate]

I have a camera module with a lens viewing angle of 185° and a focal length of 1.8. But as far as I can tell, this camera module is not classified as a fish-eye lens. The working distance is ...
413 views

### How big is the sun in an image made with Canon APS-C and 300mm focal length?

I am trying to decide what lens should I use for eclipse and I am wondering if my 70-300 IS USM would be enough or should I get (rent) a lens with higher magnification. Since my solar filters are ...
1k views

### does focal length change across an image?

If an image is taken of a flat surface parallel to a (presumed perfect) lens, is the scale of objects (and therefore focal length) uniform across the whole image? eg. Would an object in the centre of ...
887 views

### Is my distance/size math for macro photography correct?

I was comparing Panasonic lenses the other day, and I wanted to know about their macro capabilities. Obviously Panasonic lists the closest focusing distance, but this doesn't tell me much about the ...
4k views

### Is it exactly true that doubling the focal length makes everything look twice as big?

I had come to the conclusion that if one lens has twice the focal length of another, that means it makes everything look twice as big. Conversely, if a lens has half the focal length, you see twice as ...
2k views

### Camera handling - right handed, left eye dominant

I know there are many discussions online about this topic, so I humbly apologise if I missed the answers to my following questions. As I stated in the title I am right handed but left eye dominant, ...
545 views

### Can I combine a pinhole bodycap with macro extension tube to adjust focal length?

I'm interested in trying out a bodycap style pinhole on my DSLR (a Nikon D3300 in my case). Can I combine this with a macro extension tube to adjust the focal length? Calculators such as Mr Pinhole ...
172 views

### How to achieve large DOF in a macro like this video? [duplicate]

I noticed that this video has a very beautiful DOF, almost spot on. It is a video but should still be applicable to photography. So how is such precise and large Depth of field achieved? What kind of ...
856 views

### How can I calculate sensor size (width and height) from focus length, vertical, and horizontal angle of view?

How to calculate sensor size (width/height) when knowing focus length, vertical & horizontal angle view (FOV)?
422 views

### Apparent size and field of view [duplicate]

i am sure there is a simple answer, but i have seem to have forgen it. How do you calculate the relative apparent size of the subject i have seen a formula with the field of view and tangent, but i ...
2k views

### Does my 18-135mm zoom provide a wider field of view than a 28mm wide angle lens?

I recently purchased my first DSLR and I am interested in purchasing a second lens. My camera came with a 18-135mm zoom lens. I am looking to get a wide angle lens. The one I am interested in is a ...
1k views

### Can I calculate sensor size from pixel dimensions and number (to find angle of view)?

I read up an equation on Wikipedia i.e. a camera's angle of view can be found from the following equation angle of view = 2 arctan ( d / 2f ) where f = focal length and d = size of film or sensor. ...
154 views

### Can I optically zoom in but still capture the content seen when zoomed out?

I have a general question regarding optical zooming. By taking an optically zoomed picture, the result is essentially a fixed-size picture that cuts off the surroundings in order to zoom in on a ...
210 views

### How does focus breathing affect DOF?

Like explained in this question Does focus breathing make a lens slower when close focusing? focus breathing does change the effective F-stop. At the same time, the lens behaves, as if it was a ...
208 views

### If I select lenses to give the same framing on APS-C and full frame, would I get the same DoF at the same aperture?

As far as I understand DoF is dependent on how far away you are from the photographed obect, and because with different sensor sizes you have to choose a different distance between you and the object ...
4k views

### Does aperture affect field of view?

I have some conceptual difficulties with understanding field of view and aperture. Let us say, I have a wide-angle lens, for example 20mm. Field of view directly correlates to the focal length of my ...
369 views

### Why don't lens manufacters just label their lenses in 35mm equivalent terms? [duplicate]

I recently read a question asking if a 35mm DX lens on a APS-C body would produce a 35mm picture. There was a good bit of discussion / corrections regarding the crop factor vs field of view ...
3k views

### Is a 30mm lens a good general purpose lens on an APS-C sensor?

I'm currently looking for a general purpose lens, and I'm more inclined to opt for a prime lens. There are several reasons for that; I want a fast lens and prime lenses tend to be faster at lower ...
415 views

### Do I need to worry about crop factor or sensor size when comparing wide angle lenses for the same camera?

I want to upgrade my wide angle lens to wider, but I don't understand well which lens will give me wide enough angle. I have Nikon D7000 and Nikkor 18-70mm, but I'm thinking of upgrade Tokina 11-16 or ...