Questions tagged [resolution]

quantifies how much detail an image can convey

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12
votes
1answer
248 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
8k 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
291 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 ...
0
votes
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
votes
3answers
94 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. ...
0
votes
2answers
1k 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 ...
3
votes
2answers
322 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 ...
6
votes
1answer
550 views

Determining the size of the smallest resolvable detail for a given camera

My generic question: Given camera specifications, e.g: sensor resolution, sensor image area, pixel size (area), optical size, focal length (ratio), fov (horizontal and/or vertical) and ...
-1
votes
1answer
355 views

Is it a bad idea to use a retina display for retouching? [closed]

If I edit on a retina display, when I open the processed photos on a low density display at 100% they look pretty soft to me, as I didn't apply enough sharpening. Since I can see much more details ...
-2
votes
2answers
6k views

How many megapixels is a 1000 pixel image?

I am asked to set some photos to 1000 pixel in order to make them smaller using the Irfan View program, but the program only accepts in megapixels. So, how many megapixels is 1000 pixel??
5
votes
1answer
199 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 ...
4
votes
4answers
402 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 ...
0
votes
1answer
149 views

Do high export resolutions compromise image safety? [duplicate]

I specialize in macro photography and I've recently begun to export in 300-350dpi, as I find it does a better job of representing details (crucial to my work). However the file size is small, eg. ...
11
votes
2answers
4k views

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 ...
12
votes
6answers
2k views

Does aliasing occur in film photography?

I have observed aliasing with digital photos and videos. While film does not have infinite resolution, it appears that film grain does not have the regularity of a digital sensor, so aliasing may not ...
0
votes
3answers
220 views

Is it possible to upgrade Canon 1100D screen to one with better resolution?

While the question as per title can naturally be answered with "Just get a better camera", I still would like to know for the following reason: my 1100D still has some life in it and because I'm just ...
0
votes
4answers
2k views

Why does a more expensive camera have fewer pixels?

I compared the specs of some cameras. The Canon EOS 5DS and the EOS-1D X MARK II each has a full-frame sensor. The second is more expensive. Their pixel counts are 8868 x 5792 and 5472 x 3648. Nikon ...
7
votes
1answer
203 views

At which point do cameras scale photos down when using quarter sensor resolution?

My Nikon D5600 sensor can deliver 24MP but I configured it to just use 6MP. At which step in the process does the camera "scales" the images down? Maybe already at sensor level? By calculating an '...
5
votes
2answers
389 views

How high resolution can a picture be before the human eye stops caring?

I found an article discussing a collective that sells ludicrously high resolution panoramas, at least one of which is comprised of over 1000 images with a resolution of 7 gigapixels. Other than ...
4
votes
3answers
471 views

Shooting large tree from a distance: resolution/details issue

Recently I take a shot of a big tree and encountered some issues with the image resolution. Here is the image after postprocessing: To make scale clear (how tall the tree is and how far I stand from ...
1
vote
4answers
291 views

Which is correct, “resolution is megapixels” or “resolution has megapixels”?

A colleague and I were having a discussion about which of these is correct: "This resolution is 15 megapixels" or "This resolution has 15 megapixels" What it comes down to is our difference in ...
2
votes
1answer
277 views

Large difference between number of image sensor pixels and pixels in the image from my iPhone

According to the specifications given by Apple, the iPhone 5s camera has 8 megapixels. I assume that this is supposed to mean that the image sensor has 8 million photosites, and I would appreciate it ...
2
votes
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?
4
votes
5answers
6k views

Is it better to crop in Raw than JPEG?

Recently we cropped a JPEG photo a lot in Photoshop Elements, and noticed we had lost a lot of resolution when we had the photo printed. Would it have been better to shoot in Raw, and not lose so much ...
2
votes
1answer
412 views

How do I get the first preview on my camera to look as good as when I'm zoomed in?

When I take photos on my camera and view them, they sometimes don't look the best quality. When I zoom into them on the camera they look much better, like the quality and sharpness of the image is a ...
0
votes
2answers
465 views

does the presence of Moiré in a photo implies the “lens outresolve the sensor”?

I sometimes come across affirmative comments such as "there's moiré in the photo so the lens out-resolves the sensor". But is it true? I would say: moiré in a photo isn't a sufficient indication ...
1
vote
2answers
252 views

Same manufacturer, two lenses of similar focal length, but one is much faster…does the sweet spot produce the same resolution?

This has practical implications as I want to use a 300mm tele for shooting landscapes, where lens speed is not so critical but maximum resolution (and light weight) is. Would I drop twenty times the ...
1
vote
2answers
865 views

how to perform image quality comparison at different resolutions?

My objective is to compare two photos of the same object at different resolutions and be able to tell how much more detail does the larger image contain than the smaller one. The point of this is to ...
0
votes
7answers
859 views

Achieving film-like resolution, lens requirements?

I am considering moving up to a full frame camera and want to know how my image results will compare to film. According to Kodak, a 35mm film cell has 6000 lines of resolution. Olin Lathrop gave a ...
3
votes
3answers
1k views

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 ...
1
vote
1answer
165 views

Does spatial resolution affect exposure at all?

I have been testing two different sensors, using 3 lenses between each of the sensors. I have also kept the exposure to 6ms between each sensor. I noticed a difference in measured DN pixel values ...
-3
votes
1answer
147 views

How do I fix low resolution on my Canon T5i? [duplicate]

I went to get some prints and they were super blurry. I asked the photo center workers and they said it is because the resolution is way too low, so I can't print anything bigger than 5x7. I'm not a ...
0
votes
2answers
462 views

How do you make the resolution bigger on a Canon Rebel T5i? [duplicate]

All of my pictures come out super blurry if they are anything bigger that 5x7 and I want to fix it. So how do I change the resolution? Is it something I have to do BEFORE I take the pictures or am I ...
0
votes
1answer
2k views

Does “Diffraction Correction” correct the degraded resolution due to the low-pass filter in Canon 5D Mark iv

I was thinking why canon 5d mark iv still need anti allies filter even though its near to the Nikon 810 resolution. But recently I found there is a feature in Canon 5D mark iv call Diffraction ...
1
vote
2answers
211 views

Is there software to automatically choose the optimal resolution for scanning?

I have seen recommendations to scan analogue photo prints at a DPI setting anywhere between 200 DPI and 1200 DPI depending on the quality of the print. I've heard that everything from camera focus to ...
1
vote
1answer
141 views

Should I preemptively downsize photo resolution for smaller prints?

I was thinking about how many websites (eg. Facebook) have a bad reputation for lossy downsizing of images, and began to wonder if this goes for printing as well. Would it be better to send in a ...
0
votes
3answers
2k views

How to submit a picture with 12mp and 300dpi to a contest? [duplicate]

I was wondering how can I make an image stay 12mp and 300dpi. I want to participate in a contest about street photography but their requirements are that the image must be 12mp and 300dpi. I'm new to ...
4
votes
5answers
5k views

At what point does the Canon 5D Mark IV's high-ISO performance give it higher real resolution than the 5DS (R)?

I want the sharpest images with the most detail possible. Resolution increases detail (to a limit) Noise decreases sharpness Therefore, I have a dilemma. I am looking to purchase a new DSLR: either ...
9
votes
5answers
8k 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 ...
2
votes
2answers
1k views

How to calculate digital photo precision based on camera specification?

I'm doing a project which involves analyzing an object's width from a photo with given precision of about 0.1 mm. I am to the point where I have to choose which camera to buy in order to obtain the ...
0
votes
2answers
9k views

Trying to print A1 size paper, but confused over dpi/resolution settings

I would like to print something on A1 size paper, and just opened my Photoshop to edit the picture and I am confused about somethings. I found online which size to choose, but other than that all the ...
0
votes
2answers
4k views

Is 4288 X 2848 pixels an unfriendly ratio for quality printing and framing or am I missing something?

I have a Nikon D5000 that shoots 4288 X 2848 pixels. When I take pictures, I'm not thinking of how I may need to crop the picture later on or add a border / matting so that it fits into a common ...
-1
votes
5answers
3k views

I am going to advertise on a billboard. Is 127 kilobytes good enough?

I don't know the number of pixels. 7x3.6 meters Would an image of 127 kilobytes be good enough for an advertisement that size?
1
vote
3answers
245 views

What's the best way to scan a 1“x1.25” BW photo for enlarging?

I have an old (1939) BW glossy photo that's only 1" x 1.25". The photo quality is good, very sharp, just too tiny. What would be the best way to scan it to enlarge to a 5x7?
24
votes
6answers
28k views

Took my first ever 4k picture; Why is it so disappointing?

Today for the first time ever I captured a 4K resolution picture. I don't know much about cameras or photography but I expected the picture to at least be sharp like usually high resolution pictures ...
2
votes
4answers
153 views

Photography vs videography in resolution

Why have still cameras' resolutions become more than video cameras' resolutions? The res. of the 8K is about 33 megapixels, but hasselblad's h6d's res. is 100mp... (Just ignore Lytro Cinema for now) ...
2
votes
3answers
523 views

What are the advantages of editing a larger image?

If I have an image which is 2000px by 2000px, and the same image at 500px x 500px, what are the advantages of editing the larger image and scaling down afterwards?
0
votes
1answer
636 views

Photo resolution for a large canvas

I'm trying to resize a photo taken with a Canon 5D Mark III for a 36" X 72" canvas at 300ppi through Lightroom 5. I exported the photo at H: 10800 X W: 21600, but the printing company is telling me ...
0
votes
4answers
126 views

Do cameras assume a particular size of print when reporting DPI?

When a photo indicates that it is, say, 300 DPI, is that based on a standard sized print? i.e. is there a specific standard size that the DPI is based on, and if so what is that size?
2
votes
3answers
216 views

Best lens to photograph a large flat object

I need to accurately photograph mood boards. These are large (4x8 feet, 120x240 cm in my case) white or black boards with photographs, material swatches, pantone swatches pinned to them. The goal is ...