Questions tagged [resolution]

quantifies how much detail an image can convey

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3answers
839 views

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 ...
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3answers
254 views

Does lower resolution result in better signal-to-noise ratio, given the same sensor size?

With the release of the Canon EOS R5/R6, there have been many saying that they prefer the 20MP R6 camera over the 45MP R5 camera, due to its lower price but also because of "better low-light ...
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2answers
76 views

Estimating the optical resolution of a lens

In Tony & Chelsea Northrup's recent video titled 5 Lies Camera Companies Tell You, they mention that the optical resolution of a kit lens is often lower than the resolution of the sensor at around ...
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2answers
152 views

What digital camera resolution do I need to make a “zoomed-in” image on a website?

Sorry for my English...I don't have much experience with digital cameras. Right now. I'm building a Website and I'm creating a zoomed-in image like this, where mousing over a smaller image displays a ...
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2answers
133 views

How to calculate the precision/resolution of a camera

I know there are other questions about this but I couldn't find the answer I was looking for... I am developing a control system using a camera and I need to know theoretically the precision/...
1
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1answer
42 views

Printing picture on a canvas [duplicate]

I am trying to print a picture on a canvas, I would like the canvas to be 16x24 in size. I was told that my picture is 75 DPI, is the resolution good enough for the canvas to be nice and clear?
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2answers
122 views

What PPI I need to set for photos to avoid pixelated, jagged edges on paper?

I want to shoot a few photos using the smartphone. I will receive JPEG files with a pixel density of 72 ppi. I will then move these photos to my computer and convert them from JPEG to TIFF (using GIMP,...
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2answers
241 views

Calculate original resolution an image was taken at from EXIF data?

I have a resized JPG of a photo that still contains the original EXIF data. How can I calculate the original resolution (in pixels) the camera was set to when this photo was taken? In the EXIF, I see ...
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3answers
248 views

Why are 48mp images taken with a 4k camcorder very bad?

I bought a 4k ultra HD digital camcorder and took a picture with it. I don't know much about cameras or photography but I expected the picture to be sharp as high-resolution pictures are. But when I ...
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3answers
159 views

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 ...
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5answers
16k views

Does change of lens affect a camera's megapixels?

I have a Nikon D40. It has only 6.1 MP. I am planning to buy additional lens for it. Can changing the lens of the camera increase or decrease the megapixels of the camera?
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2answers
273 views

Effect of increasing sensor size or focal length on resolution of target object

Suppose I have a camera of sensor size 8mmx8mm, optical class (2/3)" with a compatible lens of also (2/3)". The focal length of my lens is fixed (say 8mm), and the distance to my target object is also ...
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2answers
84 views

What is the meaning of pixel size for sensors

I was reading into the specs of my camera, and in the manual it says that the sensor I am using (SONY EMX287) uses 6.9 μm pixel size, making it a sensor with high spatial resolution. So I was ...
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2answers
86 views

Tools or methods to extract frame from video which is of higher resolution by combining multiple frames

With a stationary video zoomed in, if watching as a human, more details can be "seen" over multiple frames because we're able to tune out noise and/or combine slightly shifted detail into one coherent ...
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2answers
22k views

How do I set up my camera to get a high enough resolution for printing at 300dpi?

How do I get the highest resolution my camera can take a photo at? I want to be able to have a picture as Photoshop-ready as I possibly can. For example, if I need to upload high resolution art at ...
3
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3answers
274 views

Bayer color effective true resolution [duplicate]

Because in a typical digital camera, each pixel records only one color though use of a Bayer filter or similar mechanism to achieve color vision, the true resolution of a ## megapixel sensor is ...
2
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1answer
70 views

Photobook printing – does the text get printed differently?

I've printed a few photobooks through various services (AdoramaPix, Blurb, etc.) and am always looking for better quality options. I hear good things about BayPhotos and Milk, in particular their 6-...
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2answers
64 views

Need advice for camera and accessories for my experienmts [closed]

For my experiments I need to take pictures of objects that are around 5cm x 5cm with good resolution, I have a Pixel 3a and the current resolution is just ok. I need to lay these objects on a flat ...
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4answers
385 views

Why are there no digital large format photographic imaging sensors using the TFT technology from medical x ray imaging?

Recently I witnessed an x ray imaging of an entire thorax, and I was pretty sure it was a film cassette with analogue film that was used, but was taught that it was a digital sensor. This sensor had ...
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3answers
139 views

What is a good resolution for text notes (during a lecture or training) [closed]

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 ...
17
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4answers
2k views

How can a high resolution camera matter when the output is low resolution?

The question is inspired by this question showing these pictures. The accepted answer suggests that these pictures were taken by a 8x10 view camera, and the use of a 8x10 camera was confirmed in the ...
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1answer
176 views

How can I force my 48Mpix Android camera phone to save images at full resolution?

I have a Mi A3 phone camera. This has a 48Mpix sensor, but I am disappointed in the detail captured compared to, for example, a Sony phone with a 12Mpix sensor. Now what I notice from image ...
0
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1answer
604 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 ...
19
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5answers
103k views

How can I upscale a low-res image to make it appear higher-res?

I want to enlarge an image to a bigger size. This will cause pixelation. So I want to apply some treatment to it in Photoshop that will suppress some of this pixelation. Of course I cannot generate ...
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2answers
162 views

Is 24MP actually matched to Full-HD Resolution when factoring in the differences on how pixels are defined?

Naive assumption: 24MP sensor vs a Full HD monitor of 2MP, sensor has much more resolution. Second look: You sample something that is not synchronous to your sampling raster/clock, you need to ...
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1answer
101 views

Calculate the maximum DPI a camera can shoot [duplicate]

I am trying to determine at what DPI a certain camera can shoot, namely this model, however the technical specs at the official site do not give any details about it. Is there a way to calculate ...
0
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2answers
54 views

How do i find the distance required to resolve a point on a page from a mobile camera?

Given all details such as focal length , aperture etc , how can i find the size of a point on a paper that is at a given distance from a mobile camera ? Or vica versa , the distance required to ...
2
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2answers
723 views

Lumix G7: Raw photos only in 1920x1440, no higher res available

On a G7 I bought used the images come with a 4592x3448 resolution for JPEG and 1920x1440 for raw. When I switch the mode to RAW only, the resolution/image size option in the menu is greyed out. Is ...
31
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5answers
18k views

Is there any practical difference between saving at 300ppi or 72ppi?

I often see statements in discussions about web displayed image quality that go something like this: "I only upload pictures at 72 dpi and 1200 pixels on the long edge, so if someone copies and prints ...
3
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3answers
546 views

What is “Resolution” and how is it related to “Printing”?

What do we mean by "Image Resolution", and how is it related to printing on paper? Is resolution related to displaying the image on computer screens too? What is the meaning of "High Resolution"? "...
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2answers
4k views

What impact on image resolution does the aperture have?

What is the effects on depth of field, signal to noise ratio and image resolution when reducing the aperture?
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2answers
452 views

What is Nineteen Megapixels minus Sixteen Megapixels?

Recently I opted to buy a camera. I asked my brother a suggestion regarding my purchase, and suddenly he started to ask me number of questions. I was able to answer all the questions, except this one: ...
3
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2answers
2k views

How many printed dots are needed to represent a pixel with an inkjet printer?

Context I have a digital picture with a size of x*y pixels. I'm trying to figure the maximum print size I could produce and still have an image which "look good" (relatively to human perception at a ...
18
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7answers
11k views

What megapixel value is equivalent to which ISO film?

Is there some kind of equivalency table or formula that expresses what kind of pixels you need in a digital camera to have roughly the same quality as a particular ISO graded film? What other ...
0
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1answer
108 views

Can anybody recover pictures or data from a SD Card other than the Owner? [closed]

I have a Android phone and the SD Card got corrupted. It had pictures of important information and I want to know if someone other than myself can retrieve the pictures or data?
3
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4answers
734 views

Does higher resolution in an image imply more bits per pixel?

I have been trying to understand how a better spectrum of color can be represented in an image and to avoid banding it sounds like the image would need to have more bits per pixel. When the resolution ...
6
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3answers
1k views

How to determine the actual or “true” resolution of a digital photograph? [duplicate]

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 ...
0
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2answers
258 views

how to take a custom resolution using a canon camera

Currently I'm having my staff take mass pictures of items from convenient store in order to populate the images of items in our e-commerce site. I have a Canon EOS 200D camera. My target ...
32
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5answers
22k views

CSI image resolution enhance: How real is it?

So I watched the following 1 minute long Youtube clip from CSI New York. In the clip, using what seems to be the recording from a standard bank camera, they zoom in at least 100, and see the image ...
51
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7answers
186k views

Is there a general formula for image size vs. print size?

What size images do I need for common print sizes, such as wallet size, 8x10, and 16x20? Is there a general formula? How could that size change if, for example, a 16x20 was printed on canvas rather ...
2
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1answer
93 views

High resolution photography with C API and optical zoom [closed]

I am currently looking for solutions to take high resolution photos of objects via a dedicated software. (The software will be developed by myself.) Therefore I am looking for ideas for cameras, where:...
2
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1answer
44 views

View at given print size

What is a good way of viewing an image at the same physical scale as a given print size? E.g. say I want to print an image at 40x60cm. How do I (most easily) display the image so that 1cm on my ...
2
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4answers
468 views

Pixels and photodiodes

A photodiode is the smallest element of a digital sensor, while a pixel is the smallest piece of information in a digital image. I wonder if the two terms can be used interchangeably or there are some ...
2
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3answers
1k views

Does Olympus OM-D E-M1 Mark II High Res Shot mode work with manual lenses?

I've read that Olympus OM-D E-M1 Mark II High Res Shot mode has some aperture settings limitations. Does it work with fully manual legacy lenses that don't report aperture to the camera at all?
18
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4answers
8k views

Why are effective pixels greater than the actual resolution?

This page compares Canon EOS 550D and Canon EOS 500D cameras and mentions 18.7 million effective pixels for 550D. However the best resolution possible using this camera is 5184 * 3456 = 17915904 ~...
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5answers
7k views

Why does the Canon 1D X MK 2 only have 20.2MP

The Canon 1D X MK2 is the new flagship of Canon. So why does this top camera only have a 20.2 MP sensor? I mean its 2016, even mobile phones have a higher resolution. I knew its not all about the ...
0
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1answer
70 views

Can only take 12MP photos on my 16MP Sony DSC H100

I bought this camera at a quarter of its price and just noticed I seemingly can't take pictures at its full resolution (16MP). The only available options are 2 and 12MP. Any clues?
5
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1answer
191 views

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 ...
-1
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1answer
141 views

Why do dedicated video cameras have such low resolution sensors? [closed]

For instance, the Canon XF405 camcorder has an 8.2 megapixel sensor, yet it costs over $3000 USD. Whereas even a iPhone 6s has a 12 megapixel sensor. Why do dedicated video camera have sensors with ...
3
votes
3answers
164 views

Full resolution at less-desired aspect ratio or less resolution at desired aspect ratio?

I come from the world of film cameras, where larger negatives are generally preferred over smaller negatives because they generally can hold more information and detail. Now, with digital cameras, ...

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