Questions tagged [image-quality]

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

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7
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2answers
2k views

Why do my mobile phone images have a ghostly glow?

I'm not too sure if a setting or update has changed the quality of my photos, or if the glass lens protector I have put on may be causing this. I have a Samsung S10 5G. It used to take amazing photos, ...
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4answers
155 views

Sensor size and pixels amount impact on image quality

Digital cameras have two characteristics: sensor size and pixels amount (in MP). I know the bigger sensor is and the more pixels amount is the better for the final image quality. But what ...
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2answers
52 views

Can jpg be converted to progressive jpg without quality loss?

My understanding of a progressive jpg is that it saves the color information of each pixel in a different order, to create the progressive loading effect. I.e. instead of RGB RGB RGB ..., it's saved ...
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1answer
173 views

Did sensors improve in the last 10 years?

I have a Sony SLT-65 and consider getting a new mirror-less APS-C camera. What can I expect from sensor development of the last 10 years? E.g., does the Fuji X-T1 offer better quality in low-light/...
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3answers
320 views

Are award winning landscape images edited?

I am on Flickr and 500px and also exploring award winning photographer's shots. They are beautiful, but I always wonder how much they edit their images? Can an image straight out from camera win an ...
2
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1answer
214 views

Is a Canon 18-200mm lens a good idea?

Currently I have a T7, and I don't like the non-versatility of the kit 18-55mm lens, i.e. I need more focal range. Is a Canon 18-200mm lens a good option for a replacement? I've seen a lot of reviews, ...
0
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1answer
198 views

In general, should I expect better image quality from a 24-70mm f/2.8 lens than from a 24-105mm f/4 lens?

I'm in the market for a full frame EF-mount standard zoom lens, so I've been doing a lot of research about different 24‑70mm f/2.8 and 24‑105mm f/4 options. I understand the tradeoffs in terms of ...
8
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5answers
2k views

How to increase the quality of photos taken through a DSLR?

I have been shooting for six months now using my Nikon D5600 and the 18-55 mm kit lens. I use Photoshop to do the color manipulation for my images. When I finish I export them in PNG format and upload ...
1
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2answers
696 views

Why does the quality of photos shot in RAW change after a few seconds when viewing them on a computer?

I have been taking a photo class for the past month or so and the professor told us to shoot in raw for a few assignments. When I view the pictures shot in RAW (on a canon rebel t7) on my computer, ...
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2answers
161 views

Why does GIMP increase the size of exported JPEG files?

I'm using GIMP to edit some vacation pictures (JPEG files) taken with a rather old digital camera. Lacking a professional background, I just went about by trial and error and ended up adjusting the ...
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3answers
142 views

Canon 5D Mark III - Printing at 40 x 30 inches help

I took a photograph and would like to print it at 40x30 inches. I have RAW files - what PPI/resolution should I import this image in? I am slightly confused by it. These images should be crisp! Thank ...
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2answers
41 views

How to test two polarising filters against each other?

I bought 2 CPL polarising filters from the same manufacturer with the same characteristics. One is medium level and one is their highest level. The difference between them, as noted by the ...
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3answers
155 views

Smartphone or camera [closed]

I have the following problem: I may buy top smartphone for 1000 eur or smartphone+some camera. Smartphone aside photos is used for whatsapp mainly. So my question is: is it possible to find camera for ...
2
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1answer
190 views

Why do JPEG and TIFF versions of image look different?

I noticed something that probably is good but looks bad in my opinion. I pixel peeped an image to compare the Jpeg vs Tiff. Both are exported with Lightroom from a raw file. I only changed the file ...
0
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1answer
91 views

Do I lose any photo quality with WiFi and AirDrop?

I am starting to develop more and more experience as an editorial photographer and I like to focus on current events around my city. That means that I find myself often submitting pics to Shutterstock ...
2
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3answers
246 views

High-tension lines degrade image quality?

Can high-tension lines degrade image quality? I've been trying to photograph foxes, there den is under many high-tension lines (about 2/3 mile upstream from a 35,600 kW power generating dam). I'm ...
1
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2answers
96 views

Different focus on different parts of the picture

I have a problem with the camera on my Xiaomi Mi A2. It mainly occurs when I take pictures of things far away. This problem is consistent. I have added a few pictures. You can see in one of the ...
1
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4answers
365 views

Longer or shorter focal length for good IQ for low light portrait photography?

I have a theoretical question. Consider two lenses with same f-ratio but one has a larger focal length than the other (say 200 mm vs 50mm). Which lens would give better image quality when shooting ...
1
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0answers
86 views

Photography gets check pattern during saving/flattening in PS

I was working on scan of this "a little" overexposed analogue photo (cleaning from dust, some colour adjustments and curves). After saving a picture, this check pattern appear. I tried different ...
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3answers
350 views

Quit photography in 2006. Ready to restart, Have good lenses still but need advice on picking right body

I ran safaris using a Canon EOS20D, and a clutch of what are now "L" lenses and not "L II", e.g. "EF 24-70mm f/2.8L USM" and "EF 70-200mm f/2.8L IS USM". Had to quit, but kept all my gear. Clearly, i ...
13
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4answers
3k views

An image with lower resolution is of higher file size while that of a higher resolution is of lower file size. How does that happen?

This image having resolution: 3200x2192 pixels has file size: 5.86 MB while this one has resolution of 6000x4000 pixels but file is of 4.55 MB. What is happening in both cases? Any help to clear up ...
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2answers
281 views

Using a full frame camera in crop mode decreases low light performance?

In the dpreview.com discussion thread, DX mode on the D850, a user states that: Second the smaller the sensor size the lower the signal / noise is. Using the camera [Nikon D850] in dx mode means ...
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2answers
82 views

Fear of underexposure despite proper exposure in editing program?

I'm constantly afraid that my images are underexposed for I'm playing a lot with light and shadow and like to shoot at night. Even though in my picture editing program the image seems well exposed ...
0
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3answers
438 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 ...
2
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1answer
100 views

Does the Dropbox app disintegrate photos the same way iCloud does?

On iOS devices, having “ iCloud photos” and “optimize storage” turned on causes photos on the device to be replaced with low quality versions. Is this the same situation with the Dropbox app?
0
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1answer
113 views

Sony A6000 with Sony E 18-200 lens: images unsharp on the left, in particular at zoom — lens damage?

My photos, taken with a Sony A6000 with a Sony E 18–200 mm lens, are unsharp on the left at moderate zoom and unsharp everywhere off-centre in severe zoom. This effect is present with image ...
7
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4answers
4k views

Why are my sunsets not turning out well?

I am interested to know why are some of my pictures turning out this way. For example if you take a look at the sunset I took below, clarity and generally image quality is fine around the sun and ...
0
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2answers
108 views

Do I lose information every time I add an adjustment layer to an 8bit image in Photoshop?

A friend told me that one of the disadvantages of working with 8bits images within Photoshop is that every time I add an adjustment layer I lose some data. Is that true? Is there a quantifiable ...
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2answers
86 views

How will a coating defect affect my images

I have rented an RB 67 and the 90mm lens it came with seems to have a very visible defect on the coating of the front element. How is this likely to affect my images? And what sort of scenes/lighting ...
0
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3answers
282 views

Getting a clear image for a paper with 7.62 mm hole located 50 m away

I have zero experience in photography, but I was trying to know is it possible to get a clear image for a paper with 7.62 millimeter holes located 50 meters away. This is for a project for shooting ...
0
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2answers
135 views

Blur image with a 1/2“ lens on a 1/3” sensor

When I put my 1/2" lens on my 1/2" sensor, the image is perfect, but when I put the same lens on my 1/3" sensor, everything is very blur, even when I focus at maximum, so I need to put an extension ...
0
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2answers
537 views

Is a 1" (one inch) sensor camera workable for stock or commercial photography?

Is it possible to deliver commercially-acceptable results using a 1-inch sensor size camera (let me suggest Sony RX10M4 / Panasonic FZ1000M2 as an example camera here)? By the commercially-acceptable ...
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2answers
202 views

What would cause just one photo from my phone camera to have large, blotchy magenta areas?

What would cause the pink on this picture? All the pics before and after were normal. No filter, no flash.
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2answers
149 views

Does dropping a computer cause the pictures on it to lose quality? [closed]

After dropping my MacBook, the pictures on it have become pixelated.
2
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1answer
63 views

Does compressing with chroma-subsampling multiple times degrade image quality?

Suppose I am creating a large image files out of smaller ones. The original images (jpeg) already have chroma-subsampling of 4:2:0. If one were to put them together and save again as a jpeg, would ...
2
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2answers
556 views

Is editing metadata of a JPEG destructive to the image?

Is editing metadata of a JPEG destructive to the image? If I edit "File Info" > "Description" in Photoshop, then save.... am I causing the same image degradation as if I edited the image, then re save ...
1
vote
1answer
320 views

How to batch convert old NEF photos to JPEG/HEIF with in-camera processing look?

I have ~9k NEF photos from a Nikon D5000 that are currently taking up ~100GB. It's been 8+ years without me touching them, so I don't see a reason to assume I will ever process and edit them. I'd ...
1
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1answer
177 views

What does “frequency” mean in an image? [duplicate]

I saw similar question and several good answers at here What does "frequency" mean in an image? but, I actually couldn't understand about those answers. "Is it right that the higher the ...
0
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2answers
513 views

Nikon 24-85mm (non VR) vs. Nikon 28-70mm 3.5-4.5D

I currently own a Nikon 28-70mm 3.5-4.5D. I've enjoyed the lens and found it on eBay for $45 so it was a steal. From what I understand it was a great compact lens in the 90's that was a "kit" lens but ...
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2answers
171 views

Snapseed vs Lightroom PC output quality

All of them has some pluses and minuses. My concern is, if I process the photo in Snapseed in to the final form with tools which Snapseed offer. Will the output quality be great as same as Lightroom ...
2
votes
2answers
99 views

Sony SEL 18-200mm very blurry at the right part of the photo

I own a Sony a6000 and recently upgraded the kit lens (10-50) for an 18-200mm lens. The problem I face is that at the right part of the photos, mostly on wide angle, the photo is very blurry compared ...
3
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7answers
467 views

Can RAW image files deteriorate over time?

I was at a photographer some time ago, shot some photos of my son and came back to view and select a range of images, some of which I wanted to print, and some of which I wanted and to receive by file ...
1
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2answers
214 views

How to determine which jpeg is closer to the original image and has the most information?

I've got two jpegs of the same photo of different sizes and attributes. How can I tell if one is the original taken by an iPhone4 or if neither is the original, determine which has the most ...
3
votes
2answers
380 views

How do I cope with haze for the photos containing sky and trees at a distance?

I'm always struggling with photos which contain large zones with trees situated far away from the camera. Haze and pollution cause severe changes in colors, which means that the trees lose their ...
-2
votes
3answers
112 views

Is it normal for photos imported from iPhone 6 to be pixelated when zoomed in fully on “photos” app on Mac?

In "photos" on a macbook, there is an option to zoom in a photo up to 400 percent. Is it normal to see some pixelation when fully zoomed in?
0
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1answer
761 views

Black level correction for images

As I have figured, the main cause for the intensity values in an image to be non-zero even in the absence of light is the dark current which propagates through the photodiodes, providing some charge ...
16
votes
13answers
7k views

How important is a good quality camera for good photography? [closed]

Don't know if this is already a known thing/wiki/previously asked here, but basically: How important is a good camera for actually making strides in photography/doing well? I've done some photography ...
2
votes
4answers
524 views

Since larger pixels increase depth of field and sensitivity, why don't we have large sensors with a low number of pixels?

If I understood correctly, the DoF (all other parameters fixed) increases with the pixel surface. So to have a high sensitivity together with a deep DoF, why don't we just have big pixels (and thus ...
2
votes
2answers
126 views

Do different microlenses on EOS R / RP affect use with EF lenses?

I have read that EOS RP uses otherwise the same sensor as the 6D Mark II. However, RF mount has a lower flange focal distance than EF mount. Therefore, Canon has adjusted the microlenses in EOS RP to ...
1
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2answers
107 views

Is this the limit of the camera image quality or is the subject out of focus?

I'm using the "macro" mode in the Powershot G9X II. The macro mode is simply a shorter focus range, there is no magnification in place, like in aftermarket macro lenses for DSLR's. I've shot many ...

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