Questions tagged [resolution]

quantifies how much detail an image can convey

Filter by
Sorted by
Tagged with
0
votes
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?
-8
votes
2answers
434 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: ...
2
votes
2answers
1k 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
votes
8answers
10k 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
votes
1answer
105 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?
0
votes
2answers
55 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 ...
3
votes
4answers
345 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
votes
3answers
823 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 ...
2
votes
3answers
517 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
100 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 ...
30
votes
5answers
20k 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 ...
49
votes
7answers
185k 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
votes
1answer
90 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
votes
1answer
40 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
votes
4answers
157 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
votes
3answers
779 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?
16
votes
4answers
7k 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 ~...
8
votes
5answers
6k 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
votes
1answer
62 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?
4
votes
4answers
318 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 ...
5
votes
1answer
161 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
votes
1answer
125 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
114 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, ...
-3
votes
1answer
276 views

How big can I print this image? [duplicate]

I have a JPG file with a resolution of 3000x2077. How big can I print this image ? Thanks in advance
0
votes
2answers
109 views

How can I find the width and height of pixels on a camera display?

I am trying to determine the width and height of the LCD on the camera. I will use the Canon EOS-1DX Mark II as an example. The display is written as 1,620,000 pixels. This is not intuitive to me as ...
2
votes
1answer
6k views

What does “12MP + 12MP Camera” mean in the specs of a mobile phone?

I have seen some mobile phone specifications that mention "12MP + 12MP Camera", such as these specs for a Samsung Note 8: 12MP + 12MP Camera 8MP Front Camera 6.3" Display 64 GB Memory 6 GB Ram 2.3 + ...
2
votes
2answers
194 views

What image/camera/lens quality metrics are relevant for resolving human subjects?

I am attempting to gather data for creative historical purposes. However, I'm a computer scientist, not a physicist or a photographer, and there seem to be a gazillion considerations. The environment ...
-2
votes
2answers
155 views

Best Camera To Purchase for my Vacation [closed]

I'm going on a few vacations soon and am thinking about purchasing a new camera. Currently I just use my iPhone 6s. I've been searching the internet endlessly it seems and have came across these few ...
-4
votes
3answers
189 views

What is wrong with this photo? [closed]

I just got a new camera (Panasonic ZS60) and I've been running into a few problems/questions while testing. Mostly it seems like leaves have a low-resolution, watercolor-like appearance in low-light ...
2
votes
4answers
330 views

Given aperture and focal length, what is the minimum distance for maximum resolution? [closed]

I'm going to describe a physics experiment involving imaging a proton beam using a CCD camera by reflecting it on a aluminium oxide surface, and we need some help about how close the camera should be ...
-1
votes
1answer
296 views

What are Olympus' best in-camera Jpg settings for facebook

I usually shoot raw and make minimal in-camera post-processing with my O-M10 Mark II before exporting the photos to Facebook. Did anyone figure out what are the best in-camera jpeg resolution and ...
1
vote
3answers
204 views

How to post process a B/W photo to improve printing

I'm willing to print a black and white picture with quite big dimension (more or less, 3x2 feet), but the image has pretty low resolution and appears quite blury. I was wondering which kind of post ...
18
votes
3answers
4k views

Are online photos safe from damage?

The photos on one of my Facebook accounts seem to have lost a significant amount of resolution after they had already been posted. This account has other issues, for example, my timeline review is ...
2
votes
2answers
131 views

What is the resolution of the HDMI output on Olympus mirrorless cameras?

I have an Olympus E-PM2 and would like to know the maximum resolution (and possibly refresh frequency) of the camera HDMI output. The end aim is to connect it to a high-resolution, high-gamut ...
12
votes
5answers
14k 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?
1
vote
1answer
91 views

Print Resolution [duplicate]

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....
0
votes
2answers
16k 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 ...
1
vote
3answers
86 views

Before printing: manual vs printer resizing?

For example, for printing a big size image to an A4 page, its better to resize it manually to exact A4 size, or let printer software set it automatically? is there any difference on sharpness, etc?
5
votes
2answers
171 views

What resolution can I reach with a B/W paper negative?

I would like to expose some B/W chemical photopaper directly in a large format camera to obtain paper negatives. What is the maximum effective resolution I could obtain on said paper? assuming a ...
1
vote
1answer
71 views

How many Pixel for this print? [closed]

I need to make a Drawing in photoshop. This drawing will be printed on a 2A0 size (double the A0), and will have lots of names on it. The smalles ones will be about 2cm in height. Then in a later ...
11
votes
1answer
198 views

Can a blind person resize a photo independently?

I am a totally blind computer user. I encountered an accessibility barrier when I was attempting to use the site http://www.vitalchek.com/ to order a birth certificate. They require you to scan or ...
13
votes
3answers
4k views

What is a resolution unit?

Please note, I'm not asking what resolution is! I've processed a raw image and exported from Photoshop, and I've just noticed something in the image details that I've never seen before (I don't think)...
2
votes
2answers
157 views

Simulating increasing image distance

I have a set of aerial images, but no information about the original camera or angular resolution of the photos. I need to in some way decrease the resolution of the images in a way that simulates ...
1
vote
2answers
288 views

What is it called when a camera generates files with more megapixels than the actual sensor provides?

I found in many Android devices that the "real array size", which is the actual pixel count of the camera sensor, is lower than the 4:3 Max picture the user can take. For example: Sensor Array = 1616 *...
13
votes
4answers
4k views

Is there a photoshop plugin or any other piece of software that can do super resolution?

I want to combine multiple photographs of the same landscape to increase the resolution of the final image. More details on the method here: http://en.wikipedia.org/wiki/Super-resolution What ...
-3
votes
3answers
93 views

Troubleshooting an image [duplicate]

I have an image, below, that seems "soft" and I'd like to know why. Possibly it was resized from something like 3000 x 3000 and not sharpened. Possibly it's a 500 x 500 image, expanded to 960 x 960. ...
18
votes
4answers
99k 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 ...
0
votes
2answers
218 views

How do I maintain a high resolution when cropping a photo I want to enlarge after post processing?

I want to crop a photo that I will want to enlarge after post processing. What do I need to do to keep a high enough resolution after cropping in order to enlarge the photo and still maintain a high ...
1
vote
2answers
187 views

Why is my Sony A57 creating low res JPGs?

I have used a Sony A57 since they became available. I always have the resolution set for 16M and FINE for JPEGs. I just took an important set of photos that were intended for large blow-ups. But ...
3
votes
2answers
123 views

How to get the largest size file possible from my DSLR for a large advertisement print?

For this first time, I am putting images on larger advertisement piece (8' x 5'). I am using a Canon T3i. When I pull photos from the memory card are the photos in the largest format possible? The ...