Photography Stack Exchange
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Questions tagged [resolution]

quantifies how much detail an image can convey

For digital images, resolution is usually measured as number of pixels.

For lenses and film, resolution usually expresses how close can two lines (or line pairs) reside while still being visually distinguishable.

292 questions
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What does a client mean when they request 300 ppi pictures?

For an archaeological project, our client is requesting that all pictures taken should be in "300 ppi" (not 300 dpi). I'm having trouble understanding what it means. For now we have been using different cameras : Sony HX400v Panasonic Lumix…
tonyduky
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What is the resolution of a satellite image when measured in centimeters and meters?

I came across this collection of sample satellite images with very large files - for instance, one photo has 11000 x 9000 pixels and its file size is 49 MB. However, what I find strange is that they are listed as: Resolution: 50 cm, Resolution: 65…
That Brazilian Guy
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How do I choose which resolution (megapixel) and compression (normal, fine, superfine) to shoot in?

What do I lose if I do not shoot at maximum res? or the "superfine" setting? What are the disadvantages? I would like to learn how digital cameras save in lower resolutions jpegs. Is the extra card-to-computer uploading time, space, and other…
William C
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How to determine the actual or "true" resolution of a digital photograph?

What I mean by "true" resolution is the resolution at which the maximum available amount of real detail is present. For an ideal picture this resolution is the same as the resolution encoded in the image file. However, in other cases the actual…
Michael
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What is a practical application of the SQRI image quality metric?

In some research, I have found that the perceived quality of an image is linearly related with the square root of the normalized modulation. Perceived contrast of sinusoidal luminance patterns is linearly proportional with the square root of the…
Gary
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By what mechanism does a camera change its output resolution?

The camera in question is a Nikon D3200, it features 24 MPx. I would like to know what changes are brought about on the sensor to enable it to shoot at lower-resolutions. Does the camera shoot in a crop mode, ignoring some pixels to bring…
HelloWorld
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distance between pixels = a fixed measurement (inch, foot etc)?

Let's say the distance from my camera to my object is 3 feet. The object is a 6 foot long pole. The pole has a mark every inch. Will the number of pixels between the bottom 1 inch be the same number of pixels of the top 1 inch? Will I be able to say…
Walter L. Preuninger II
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Is it better to take a high resolution photo and then resize it than to take it at lower resolution?

Possible Duplicate: Does it give higher quality to shoot in low-res mode in-camera, or to downsize high-res photos later? Compare these two scenarios (using the same camera): 1) You take a picture with resolution 3200x2400, transfer it to a…
Klas Mellbourn
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Print Resolution

I've made several collages and wanting to print an 8 x 10 I'm constantly told "there will be a resolution" problem. I guess I'm ignorant of what happens when I reduce the "huge" jpg to a smaller size. I just assumed that the smaller the picture…
PAUL47
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What is the most honest way to cite pixel count (resolution)?

Canon cites the following features for the EOS-1D X: Total Pixels: 19.3 Megapixels Effective Pixels: 18.1 Megapixels Largest Image: 17.9 Megapixels (5184 x 3456) The discrepancies are explained very well here: Why are effective pixels greater than…
user35614
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Substitute Samsung Note 3 Cam for SLR for Product Shots for eCommerce?

I'm wondering if instead of purchasing a SLR, if I can't just use my Samsung Galaxy Note 3 camera instead. This is for eCommerce photos; women's clothing, tops and bottoms namely and some jewelry. Amazon requires the file size to be 10MB, 72…
Eric
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What's the best way to approximate '4k' resolution from a security camera?

Odd question I know. I am considering getting a 4K Home Security Camera. I want to know how it will see my yard, so I took a photo where I will mount it using my phone. (Pixel 6a, focal 2.2 resulting image is 3024x4032) Specifically, I'm…
Camera-Noob
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Why there is 96 dots per inch in description but when i opened image it is 300

Can some explain me please? Why if i right clicked the information about the file there is 96 dots per inch . But when i opened image in GIMP it says it's 300? Images were saved/downloaded from the web.
anatolio15
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Can I upgrade the resolution of a camera without getting a new camera body?

Can you upgrade your camera body with higher resolution? E.g with a new sensor? I would even be willing to pay for a whole camera to upgrade the one I have. The reason I want to upgrade the sensor and keep the same camera is that it fits a $3k…
Gary L Chafin
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What is a good resolution for text notes (during a lecture or training)

I'm a techie and when attending various training presentations, I'll take a photo of a slide that is being presented. Now I want to save this training slide for posterity. What resolution is adequate for storing a training slide long term. The goal…
PatS
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