Questions tagged [resolution]

quantifies how much detail an image can convey

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18
votes
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 ~...
9
votes
6answers
104k views

Is it possible to scale up an image to increase the the pixel density?

I have taken a picture whose resolution is less. I can resize the image easily (i.e I can scale to higher resolution) but the image quality goes for a toss, which is true because the image might not ...
13
votes
6answers
17k 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?
35
votes
8answers
26k 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 ...
7
votes
3answers
10k views

Why do different smartphones with the same megapixel camera resolutions have different quality of image?

There are different brands of smart phones available. Frequently two different big brand smart phones (Nokia, Samsung , Apple, Sony etc.) with the same Megapixel count have a different quality of ...
0
votes
0answers
81 views

What is the highest spatial frequency that can occur in an image? And the smallest one?

I searched the information and couldn't find the answer. I don't understand about this and I don't know how to respond.
0
votes
1answer
72 views

Instagram Landscape Resolution: 1200 px Width or 1080 px Width?

It seems there are different recommendations for Instagram landscape format image resolutions available out there: One say, the image should have 1080 px x 608 px (which is 1.91:1). Others say, it ...
1
vote
2answers
51 views

What setting in Lightroom export can affect resolution when printing

I have this picture I took with my Fuji X-T1 in JPEG Fine. I wanted to print it for a relatively big frame in black and white, so I converted it to B&W in Lightroom, exported it and sent it to a ...
1
vote
0answers
30 views

Sensor resolution and ISO performance [duplicate]

I keep hearing that less megapixels = better ISO performance, because larger pixels capture more light Suppose I shot something with a 4MP sensor and then downscale it to 1MP (4-to-1 pixel binning?)....
3
votes
3answers
179 views

Perseverance Rover Camera Sensor Resolution

(I have two questions.) I was looking at some pictures taken by the rover Perseverance, on Mars, and it got me thinking about the sensor it uses. Turns out that it uses a, about, 2MP sensor in its &...
2
votes
2answers
143 views

What does it mean when a scanner or printer has asymmetric resolution (e.g., 600 x 1200)?

What does it mean when a scanner or printer has asymmetric resolution (e.g., 600 x 1200)? If you print/scan something that is quadratic, would you get different quality if you rotated it 90 °? Isn't ...
3
votes
2answers
198 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 ...
0
votes
1answer
108 views

Would a professional restorer be able to do a better job restoring a print if he were to scan the print at 2400 ppi vs 1200 ppi?

According to one answer on this question at Genealogy and Family History, a restorer of prints will often ask a customer to scan a print for restoration at the customer's scanner's highest resolution, ...
0
votes
5answers
129 views

Is my monitor inhibiting my post processing?

My Acer x193w equals 1440 x 900, 0.283nm pitch, 16 million colors I am thinking of upgrading the display, I'm editing photos and wonder if my suspicion of not being able to appreciate the fine detail ...
20
votes
5answers
6k views

Maximum useful resolution for scanning 35mm film

I have no particular project in mind so I'm just asking in order to have a better understanding: Let's say I'm an artist shooting pictures with a 35mm camera and my point would be to make really big ...
9
votes
3answers
3k views

Is it worth investing in a used 35 mm Film camera?

I've a Canon 60D and I'm mainly interested in shooting landscapes. I feel very interested in buying a used canon EOS film camera (since my EF lenses are compatible). I would like to take pictures ...
0
votes
2answers
201 views

What is needed in order to produce good quality photographic wallpaper for a smallish room?

I am not a regular photographer. I'm interested in the idea of having a photographic harbour scene as wallpaper on my study wall. It may or may not be required fill the whole wall: I've given ...
8
votes
10answers
80k views

How to reduce file size without losing quality or resolution?

I have 2,300+ pictures that I want to transfer to my phone but on their original size they take up a lot of space (6.44gb) I would like to trim is down to without sacrificing quality or resolution. I ...
0
votes
2answers
165 views

How can I get the largest MB and highest picture quality from my Panasonic TZ100

I am an amateur (have been for many years) who is trying to take photos of jewelry for poster quality print at A2 size. The image of the jewelry needs to be able to look good at about 1/3 of the size ...
-8
votes
2answers
486 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: ...
21
votes
5answers
106k 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 ...
3
votes
1answer
137 views

Is there a way to speed up working with large files in Photoshop? Like proxy editing?

I am currently using a camera that produces 60mp+ raw files which I pre-correct in Lightroom and then load into Photoshop for final editing. As I have around 10 layers with various corrections, the ...
3
votes
3answers
124 views

Transition between different film/sensor generations

During the history of photography, there has arguably been no component which has improved as much as the medium which records the light. The mainstream has gradually moved from glass plates, to 5x4&...
3
votes
3answers
960 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 ...
2
votes
3answers
852 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 ...
0
votes
2answers
110 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 ...
0
votes
2answers
160 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 ...
2
votes
1answer
275 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
vote
1answer
46 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?
0
votes
2answers
169 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,...
1
vote
2answers
816 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 ...
0
votes
3answers
675 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 ...
1
vote
3answers
202 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 ...
0
votes
2answers
841 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 ...
0
votes
2answers
97 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 ...
1
vote
2answers
220 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 ...
1
vote
2answers
30k 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
votes
3answers
824 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
votes
1answer
81 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-...
4
votes
4answers
434 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 ...
1
vote
3answers
160 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
votes
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 ...
0
votes
1answer
399 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
votes
1answer
2k 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 ...
1
vote
2answers
317 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 ...
0
votes
1answer
122 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
votes
2answers
55 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
votes
2answers
2k 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 ...
3
votes
3answers
611 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"? "...
0
votes
2answers
5k 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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