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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4answers
139 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 ...
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6answers
4k views

Why does Sony say that a 35mm lens is “35mm equivalent when used with an APS-C camera?”

I'm thinking of getting a Sony A6000 with a Sony SEL35F18 Lens. I'm a little confused about the actual focal length (and/or field of view) of the lens when attached to an APS-C sized sensor. The ...
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2answers
7k views

Why do photographed objects in the distance appear smaller than they do by naked eye?

Why do objects in photos appear smaller than they do when viewed by the naked eye? For example, a mountain would appear far smaller in a photo than in real life. Does it have to do with the field of ...
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1answer
440 views

How would I insert a huge object into a panorama photo with correct position and height?

I want to insert a large object into a panorama photo, in this case a wind turbine. However, I want the object to be at the correct position and it should have the correct height. The area has many ...
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2answers
349 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 ...
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4answers
4k 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. ...
0
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1answer
138 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....
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3answers
101 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 ...
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2answers
108 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 ...
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3answers
124 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 ...
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3answers
594 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 ...
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2answers
619 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 ...
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2answers
524 views

How do I calculate the field of view of a 50mm focal length biconvex lens with the retina as sensor?

Hi I need to know the field of view of a 50mm focal length lens. I know the field of view is dependent on focal length of the lens and the image format dimension (i.e., dimensions of the sensor). If ...
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3answers
17k views

Field of view of a webcam

I was looking for a webcam that shows a wide area left and right of me, so I compared the field of view of several webcams. I was under the impression that a greater number as the FOV angle means ...
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5answers
644 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'...
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1answer
708 views

How do I find the focal length when stitching images made with an unknown lens in Hugin?

I tried to stitch some images from appollo 16 to a panorama. The problem is that I do not know the focal length of the lens. Is there a way to circumvent this?
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6answers
3k views

Why do we talk about focal-length when frame sizes are different?

I keep seeing people talking about focal-length of lenses without saying how large the frame is. Is there a more sensible way to talk about how much a lens “zooms”? (I have seen so many adverts etc ...
7
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2answers
32k views

What is the focal length on your typical cell phone camera?

I know cell phone cameras are generally wide angle, which makes sense because people wanna go out to dinner, or a show, or at the park with their kids, and they want to get the whole scene. And even ...
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1answer
228 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 ...
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3answers
117 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 ...
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1answer
295 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 ...
4
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1answer
558 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 ...
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2answers
120 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 ...
2
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1answer
260 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 ...
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1answer
781 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 ...
19
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5answers
7k views

Is there a mapping tool that will let me visualize a lens's angle of view?

In the past, I've used tools like SunCalc and The Photographer's Ephemeris to plan landscape shots in advance, based on where the sun and moon rise and set. Is there a similar tool that can overlay ...
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2answers
115 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 ...
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2answers
962 views

Which sensor “full frame” vs. APS-C (1.6 crop) gives more distortion?

Which sensor "full frame" vs. APS-C (1.6 crop) gives more distortion using the same lens? I mean, would a 10mm lens on a full frame camera show more or less distortion than if it were on an APS-C (1.6 ...
4
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2answers
617 views

How can lenses with different focal lengths have the same angle of view?

I always assumed that there was a fixed relation between focal length and angle of view. But compare the technical data for the following lenses, all from the same manufacturer: Canon EF-S 15-85mm f/...
83
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6answers
37k views

What is “angle of view” in photography?

I read on the Lens Buying Guide @ neocamera: Focal-length determines the angle-of-view seen through a lens for a given sensor-size. With a full-frame sensor a lens gives the same angle-of-view ...
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6answers
112k views

So my iPhone 6 camera lens is as wide as my full frame 35mm DSLR lens?

I am trying to understand what is the deal with "full-frame" and what difference it makes, so did a silly test: I sat at my bed and aligned the iPhone 6 camera with the door of the room and took a ...
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1answer
402 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 ...
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2answers
201 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-...
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1answer
320 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 ...
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4answers
824 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 ...
2
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1answer
579 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 ...
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2answers
651 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)....
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2answers
5k 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 ...
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1answer
306 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 ...
2
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3answers
330 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 ...
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4answers
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 ...
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5answers
3k 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 ...
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3answers
713 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 ...
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3answers
1k 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, ...
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3answers
504 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 ...
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1answer
162 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 ...
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1answer
712 views
0
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3answers
345 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 ...
2
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2answers
465 views

What determines the sharp parts in an image: the DoF or the focus point?

I am a little bit confused between depth of field (DoF) and focus points. Which of them is responsible for making part of the image sharp?
7
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2answers
472 views

Capturing large monuments and landscapes

I recently came back from a visit to Tikal, a mayan ruin filled with majestically tall structures and vertigo inducing panoramic views when looking down from on top. Unfortunately, my (and other's) ...