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Questions tagged [image-quality]

Image quality describes how well a photograph matches a perceived technical ideal.

-3
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0answers
70 views

Microcamera long range [closed]

If microcam- miniature camera is to capture text about an inch height from 4-5 meters away,if the cam does not have optical zoom can you make up for it with higher photo/video resolution and ...
0
votes
3answers
107 views

Is it normal for photos taken on iPhone 5 to have a grainy texture after being transferred to a computer?

The photos taken on iPhone 5 appear grainy after being transported to a computer. Could this be a result of accidental compression?
1
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2answers
78 views

How to reduce blur or haze when shooting long distances? [duplicate]

I am new to photography any i am not sure what is the correct settings when shooting long distance landscapes. The photo that I took is pretty blurry/hazy. Is there any specific settings or equipment ...
28
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13answers
36k views

Do digital cameras lose picture quality over time?

For some reasons when I look at my first pictures from my camera (DSLR), they look stunning. I know it could be just psychological. Another friend told me that her camera was really good when she ...
4
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4answers
13k views

kB vs MB - will pictures be good quality

I recently had my sons newborn shoot done and the photographer has sent me all his images in kB, is this right as I have always received MB files from previous ones. Will the quality be ok when I go ...
46
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3answers
7k views

What image-quality characteristics make a lens good or bad?

When reading lens reviews on the Internet, I often find subjective statements about the image quality that a lens produces, such as "good contrast" or "sharp". The problem is that I don't think I am ...
0
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1answer
449 views

image enhancement to read car plate

A group of thieves entered in my house and robbed a lot of my stuff. They used a car to run away. The following images were obtained from CCV cameras from neighbors. Is it possible to improve those ...
8
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5answers
18k views

What causes these streaked rays from light sources?

I recently bought an LG G4, whose camera can shoot in an auto and both manual mode (I can manually set the iso, aperture). I shoot 100% of the time in auto. It takes better than average photos at ...
4
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3answers
156 views

What differences can be expected when using enlarging lenses for general or macro photography?

Enlarging lenses seem to be available for very little cost. What differences can be expected when using enlarger lenses for general or macro photography? When might one prefer to use an enlarging ...
2
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2answers
158 views

How will tiny scratches on rear element affect image quality?

I have found a rather cheap Mamiya G 50mm f4 lens on ebay that has some tiny scratches on the rear element of the lens. Now, I have done some research on how much such scratches could affect the ...
4
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2answers
754 views

Filter for RGB separation and its effect on the image

Looking at Bayer filter of a typical consumer camera, one can easily see that sensitivity of the filter for each color is all over the place. Are there filters similar to Bayer that do a better job at ...
1
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4answers
219 views

How can I automatically convert Sony RAW (ARW) to JPEGs as good as the camera creates itself?

I am beginner and I made a mistake. I wanted to have the best quality and I saved photos only as raw files (arw). (I have a Sony DSC-RX100 IV). I have 1000 photos and I would like to save them as ...
4
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4answers
2k views

Why is Nextgen / wordpress is reducing the quality of my photographs?

I have been researching this night and day for months now. Photos viewed on my website look terrible compared to the same file viewed with other mediums. I have contacted many website support ...
2
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3answers
543 views

Good compromise on quality/compression for hi-rez photographs?

My Nikon D90 dumps out photographs that are 4288 x 2848 @ 300 DPI. They're about ~3 MB in size. I'm an amateur in every sense of the word. I don't know what 75% of the camera settings do. I'm ...
3
votes
3answers
331 views

JPEG or TIFF files better for print images?

I shoot RAW and am printing a book using Adobe Indesign. The printer will get a print ready pdf, but should I save the images to Indesign as hi-res JPEGs or TIFF files for the best print outcome? I ...
13
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7answers
13k views

Does stacking more lens filters decrease overall image quality?

As commented by t3mujin in another question: Stacking filters will decrease image quality, as it's another piece of glass light has to go through before reaching the sensor. I was wondering ...
0
votes
1answer
124 views

Nikon D500 + Tamron 18-400 or Sony RX100 m6

I would like to buy a lens for my Nikon D500 or maybe another small camera just for travelling. I looked for Tamron 18-400 lens and Sony RX100m6, but I can't decide. As I saw, Sony has the advantages ...
0
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2answers
257 views

GIMP Quality .jpg export - what is the best set up? [duplicate]

please could you tell what is the best common quality export value for .jpg image export in the GIMP? For example I set up the 100% for .jpg and for example for image 1,5 MB I will get the 5,2 MB or ...
8
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5answers
2k views

What should be considered for employee photos to put on company's website?

I work in the entertainment industry and am looking to produce friendly looking images of our employees (sales managers, customer support people, and so on) to put on our company's website. What ...
10
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8answers
5k views

“Optimal” size of a JPEG image in terms of its dimensions

I plan to write a script that will scan 100,000+ JPEG images and re-compress them if they are "too big" in terms of file size. Scripting is the easy part, but I am not sure how to categorize an image ...
3
votes
2answers
91 views

How can I simulate JPEG quality degradation? [duplicate]

I am writing a report about file formats in images & their properties. In the report I want to talk about how file formats have lossy compression rather than lossless compression & I wanted to ...
9
votes
5answers
2k views

Are there standards for 5 star rating scales of photos?

I'm preparing to go through thousands of photos and organize them and part of that is to give each one a rating of 1 to 5 stars. This has me wondering, has anyone developed a set of recommended ...
1
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3answers
4k views

the best way to improve image sharpness on Canon 700D

I'm currently using a Canon 700D with a few EF-S lenses, I like the Canon system, the looks, feel and ergonomics but I'm not happy with the files I'm getting. Whenever I come across a photo that ...
7
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1answer
831 views

How does the digikam quality sorter work?

I'm trying to use the digikam quality sorter but I don't know how it works. The documentation I found that most looks like a tutorial is an almost 1-year old unaswered question on the digikam user ...
10
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4answers
38k views

How does using a 2x teleconverter with 70-200 f/2.8 affect use?

I recently acquired the Canon EF 70-200mm f/2.8L IS II USM lens and I love it. However the other weekend I went to Heathrow to do some aviation photography. Whilst it is great for aircraft near to you,...
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1answer
79 views

Picture I take in low light using yougnuo 580ex comes out like this that its upper bright becomes bright and lower comes out to be totally black? [closed]

How to take proper picture by using external flash?what is the mistake I did in capturing picture I'm a noob in photography I have nikon d5300
2
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2answers
85 views

Does OIS in some cases reduce the quality of the picture (softness, vignetting, loss of contrast…)? [duplicate]

I always take pictures with optical image stabilization enabled (except if I take long exposure shots with a tripod), but I was wondering if OIS could (in some cases) reduce the picture quality. OIS ...
-3
votes
1answer
232 views

Which picture has better quality? [duplicate]

I have two exact same pictures and they are both the same x:y size. But one of them is 105 KB and the other one is 109 KB. Which of them is of better quality?
2
votes
1answer
340 views

How big can you print a canon 5d iii Image? [duplicate]

I am new into photography as a business, one of my customers have asked if they could get an A2 size print. My question is, will an A2 size print be clear enough from a canon 5d iii image (No Crop).
4
votes
3answers
144 views

Do different smartphone apps create different raw pictures?

Androids camera-2 API supports taking photos in raw format (dng for my Nexus 5) with an appropriate camera app. Since there are different apps I could use, I'm wondering if the raw picture data ...
1
vote
2answers
83 views

200mm on 48MP body (with 2x digital zoom) vs 400mm on 24MP body

Is the "quality" from a 200mm lens on 48MP body (after a 2x digital zoom) going to be same as one on 400mm on 24MP body? Assuming the same apperture
0
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2answers
91 views

what technology does Nikon use to reduce moire?

Nikon cameras do incredible job with moire effect even that nikon cameras do not have anti aliasing filter.And i didn't find moire in any situation with my Nikon d7100
0
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1answer
92 views

What is considered a good quality for consistent white balance in a flash/strobe?

Looking to buy a flash/strobe and can't tell if 5600k ± 200k is considered good or bad quality. I can imagine using 2 strobes from the same manufacturer and getting a difference of 400K, which could ...
1
vote
1answer
92 views

How to reduce haze while photographing lost distance mountains? [duplicate]

When I go hiking I noticed that sometimes the photos have a noticeable amount of haze, especially when photographing long distance mountains. I think this is a natural phenomenon due to air ...
5
votes
6answers
951 views

Do negatives scanned upside down lose quality?

I'm a novice, and don't have a detailed understanding of the technical terms, but I've scanned hundreds of 35mm and medium format negatives to get the best quality RAW files at certain presets which ...
1
vote
2answers
158 views

Can bit rot cause degraded image quality and flickering?

The photos on my computer seem to have degraded in quality since having been uploaded to my computer, and would sometimes have a flickering strobe effect, which would disappear if I restarted the ...
1
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0answers
88 views

What inkjet printer specifications to look for to produce best quality print [closed]

Im new to printing and all these terms from printer specifications are extremely confusing; dpi, ppi, dpp, amount of colors, droplet size, etc. Why is the maximum dpi on printers decreasing and ...
1
vote
2answers
83 views

What should I do to best take a digital photo of an old photo print?

My father just signed up on Facebook last week. Now that he's looked at his friends' walls / pages posting old photographs, he wanted to do the same. I have been helping him to use the smartphone (and ...
6
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2answers
2k views

Does converting image file formats affect quality?

Does converting image formats, such as from JPG to PNG, have any effect on image quality? I know converting from RAW to JPG has disadvantages, but what about other format conversions?
3
votes
2answers
103 views

What factors affect the detail and clarity of a photo taken by a digital camera?

By clarity, I mean to preserve as much detail as possible when zoomed in. For example, I take a photo of my cat 10 meters away, and I want to zoom in and able to see each single fur as clear as ...
16
votes
6answers
6k views

Why is this smartphone picture better than this dedicated camera picture?

The other day I went hiking through a mountain in west Tokyo to take wilderness pictures for reference for the new videogame I'm working on. For the past few years, I've only relied on my smartphone ...
1
vote
2answers
224 views

Picture quality when posting pictures on social media

I've been taking pictures of my self or my family with my camera for quite a while now, and i normally use those pics on social media, but the thing is... the pics are so heavy that it takes too long ...
1
vote
3answers
95 views

Professional photo to pop-up banner

The company I work for is wants to order this 10ft banner for a trade show: https://www.postupstand.com/all-products/led-and-digital/lightbox-displays/10-lux-seg-backlit-pop-up-display.html They ...
0
votes
2answers
183 views

Trying to understand losses in jpg compression

I have a bunch of jpegs taken with a Nikon D3200 at 6016 x 4000. They weigh between 9M and 12M each. To try and reduce space a bit, I compressed copies with the default Windows utility, and the new ...
4
votes
1answer
387 views

Why are test images from my Fujifilm X100F softer than I expect?

I just got a copy of the X100F, and I was really excited to play around with it. But as I've taken a handful of pictures in various settings, I've noticed that the sharpness of the images were not ...
2
votes
2answers
139 views

How to test image quality with a camera that is focused to infinity?

I have to test a camera that is focused to infinity, but I cannot take an image of an object that is more then 1.5 meters away from the camera because I can't get it out of the room itself. (The room ...
2
votes
2answers
184 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 ...
3
votes
1answer
695 views

How much does the Canon EF 1.4x III Extender affect image quality on an APS-C sensor?

To be more specific I am interested in buying the Canon EF 1.4x III Extender to use it on my Canon EF 70-200 f2.8L IS II USM mounted on my Canon 7D Mark II. I know that when using the extender the ...
2
votes
0answers
132 views

Why aren't dct quantization tables symmetrical [closed]

Many image compression standards use the DCT transform to convert spacial data into frequency data. The DCT coefficents are then quantized based on the estimated importance of a certain frequency to ...
1
vote
3answers
212 views

Assuming no editing, what's the difference between in-camera jpegs and lightroom jpegs? [duplicate]

I have a Canon 6D. I usually shoot RAW + JPEG. I shoot RAW so I have the option to edit, but I don't actually edit most of my pictures. I've noticed that if I just import into Lightroom and export ...