Questions tagged [pixel-size]

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Determining the size of a pixel at a given distance

I have a camera looking at a flat plane that is a known distance away from it. I also know the cameras intrinsic parameters. The image from the camera looks like this: (it's grayscale but that shouldn'...
Zciurus's user avatar
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1 vote
2 answers
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Calculating the size of an object from a single image, given the distance from the camera

I was looking at other questions on here and I'm pretty sure it's not a duplicate so here it goes. I'm working on a problem where I need to calculate the size of a particular object in an image. The ...
Andrew1024's user avatar
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2 answers
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How to count the amount of pixels an object in a photograph takes up

I have been trying to find out the distance of an of object from an image using this calculator https://www.scantips.com/lights/subjectdistance.html But I need to know how many pixels long the object ...
spaceamoeba1010's user avatar
2 votes
2 answers
114 views

Does small sensor/pixel has an upper limit of dynamic range?

It is from a friend that I heard: Cellphone cameras, due to their small sensor size, can have at most 11 stops of dynamic range (I did not ask too much about where that came from or what source is ...
Amarth Gûl's user avatar
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3 answers
755 views

Does having larger pixel pitch (more microns) makes camera brighter at night?

Let's say I have a full-frame camera A with pixel pitch 4 microns and a full-frame camera B with pixel pitch 6 microns. Will using same camera lens at same exposure f/2.0 and same ISO allow me to ...
LilBro's user avatar
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9 votes
5 answers
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Why is 16:9 aspect ratio rarely used in professional photography?

Sony uses a 16:9 (1.778) aspect ratio for still photos taken from its camcorders. As a guideline, panoramic photos commonly are 3:1, which is wider, while medium format are well-known to be half that ...
user610620's user avatar
-1 votes
1 answer
376 views

What are the standard pixel, inches and megabyte sizes for fine art photography?

I know that 6x4 inch photos were popularized by 35mm cameras, which were then superseded by 4x3 aspect ratio in digital cameras, while 16x9 has taken precedence in general because of widescreen ...
user610620's user avatar
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2 answers
136 views

Does photo quality deteriorate when you scale the image size larger?

If a scenic photograph is scaled double its original size to conform to some printing dpi/inches criteria, the default setting in Gimp appears as "cubic interpolation". Assuming this is the ...
user610620's user avatar
3 votes
2 answers
463 views

Trying to understand effect of lens lp/mm on image pixels

I'm trying to understand how lens quality in terms of lp/mm affects the pixels in an image. Suppose I have a Sony IMX253 (1.1" sensor format, 3.45um pixel size, 4096x3000 resolution). In order to ...
tinker102's user avatar
-2 votes
1 answer
92 views

Why increasing number of cameras on drone improves resolution?

Pegasus drone and in general use normal cameras but surprisingly have the same effect of high magnification telescope. I know using several monitors improves ...
Mini kute's user avatar
1 vote
1 answer
3k views

Calculating the sensor size or pixel pitch of the Logitech BRIO 4K Webcam? [duplicate]

I have a Logitech BRIO webcam and want to try and calculate some of its physical dimensions like the sensor size or the physical size of each pixel. Unable to find any info on the official site, I ...
user11909399's user avatar
3 votes
2 answers
13k views

What does 2500 pixels on the long dimension mean?

I have a rather silly and very simple question. In all photography competitions, they mention that the pictures should be sized to x number of pixels on the long ...
ShellZero's user avatar
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1 answer
76 views

Finding required megapixels

Is there anyway to find out how many megapixels would be required to get a level of detail on an object of a certain size? I'm wanting to clearly veiw lettering that is about 1ft*5ft that s on an ...
Lilrags16's user avatar
2 votes
2 answers
24k views

How to calculate the size of object in pixels, knowing the camera properties and distance? [duplicate]

I'm trying to calculate the size of an object in pixels in an image, when I have these information: ...
Hadi GhahremanNezhad's user avatar
0 votes
1 answer
129 views

What happens when pixels cover almost all the area of the sensor?

I think, in this question, one who give an answer has to consider 'pixel size vs pixel pitch'. I read that in some sensors, pixels don't cover the whole sensor and my question is, when the pixels ...
user152435's user avatar
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