Questions tagged [image-quality]

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

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1answer
73 views

If I ask someone at a printing shop to upscale a photo, what will he or she do?

I was sent a photo that was scanned at 300 DPI and it’s roughly 2000 x 2500 pixels. I’ve decided that I want to print it as a large print which will measure 20 inches x 30 inches and that works out ...
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1answer
105 views

Best settings to Shoot best dynamic range - Shoots like the human eye sees the details and the contrast between the bright light and the outside

I want to shoot a photography but the image looks too bright or too dark. TOO BRIGHT HERE TOO DARK HERE Here I made some editing (I combined these two photo into one ) to show how it seen through ...
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1answer
120 views

Why only the right hand of the woman is green and different to her skin colour in other parts?

I am wondering how the woman's writing hand is oddly coloured and so much greener than her tint tone on the other hand? Does it have to do with the circuit boards around her writing hand or the ...
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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.
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7answers
3k views

Does Manual iso = low noise?

I was taking some test shots today indoors (decent amount of light) set the iso manually to 800 looked through the viewfinder and I was at 1/20 (I was using Av mode) bumped the iso to like 1000 and my ...
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2answers
296 views

Why do my photos have such poor quality?

I've been using my camera Sony DSC HX100v for years. Lately, some photos have really poor quality (photos taken before and after on the same day look fine). I usually use automatic mode only, so I am ...
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2answers
134 views

how to find best FX camera to avoid diffraction at small apertures

Long time Nikon user. Looking to capture highest resolution images at smallest apertures possible in order to obtain most depth of field. Have read various scientific writing about diffraction and ...
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6answers
5k views

Unable to get good low light photos with Canon EOS R5

I'm using EOS R5 for half year now. I'm using EF and EF/S lenses, because I spent too much on camera body and can't afford to acquire better RF lenses yet. I'm unable to get good photos without ...
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4answers
272 views

Why are my D5300 photographs blown out?

Brief history: About 15 years ago, I got a Nikon D40, and I took it everywhere I went for a few years. Eventually I wanted to get into video, so I "graduated" to a D5300. Soon after that, I ...
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1answer
245 views

Zooming into RAW images

Hey there I was wondering why is it when I zoom into an image I took it looks grainy & pixalated. The image will be taken at an iso of 100 and look sharp on the the camera but not as sharp on a ...
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1answer
131 views

I have an image problem and I don't know what to call this

I wrote the article using a translator and hope you understand well, Sorry... I am developing machine vision using basler camera(acA2440-20gm). A problem arose during development. The image contains ...
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0answers
29 views

Zoom in on an image without losing quality [duplicate]

Can i enlarge an image without losing quality? You know, like in cool movies people do. Like so:
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1answer
151 views

weird vertical lines in low light settings on my Canon 70D

When I record or take photos I get these really weird vertical lines going down my image in the shadows. How to I fix this? I don't have it on a high ISO.
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2answers
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How to create a more natural look using Strobe lights for watch photography?

I am fairly new to product photography and recently ditched my lightbox for strobe lights to create a more natural and true to the eye look on my watches. The lightbox lighting gave more a dark ...
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8answers
5k views

What exactly is causing the quality difference between these two photographs?

Here is a photo of 2 individuals: my friend and a male model (right). Both of them are clicked in daylight. I get it that the background on the left picture is very bad but that cannot be the only ...
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1answer
55 views

Is changing of width and height of smart object image by using free transform OR resizing of the image the same things?

I'm not very good in Photoshop tools, can someone help me to understand; Is changing of width and height of smart object image by using free transform, OR resizing the image, the same thing? If I ...
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1answer
65 views

What adjustments are most useful / typical for improving scanned slides that look flat and a bit magenta?

I have started to scan my slide collection (made between 1980 and 2000), using a Nikon CoolScan V-ED, and found that nearly all scans look flat and boring, and many have a magenta cast, some badly. ...
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1answer
55 views

How do you know how much of an effect on the image will be when using a strangely shaped aperture like star-shaped or heart shaped?

Compared to regular pentagonal aperture, what effect does the image have if you use the aperture of the shape below? The above aperture has a pentagonal shape and has a protruding part to the side. ...
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3answers
552 views

Photography tricks for widening objects or reducing narrowness?

I have a narrow face and feel this may negatively affect my streaming captures, especially with poor quality cameras, low lenses, poor sensors, etc. Are there any givens in getting a robust, wider-...
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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
262 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
91 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
213 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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4answers
453 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 ...
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1answer
342 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, ...
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1answer
661 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 ...
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5answers
3k 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 ...
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2answers
2k 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
533 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
190 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
54 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
169 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 ...
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1answer
503 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 ...
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1answer
143 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 ...
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3answers
248 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 ...
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2answers
104 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 ...
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4answers
515 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 ...
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0answers
88 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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2answers
359 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 ...
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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
492 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
91 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 ...
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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 ...
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1answer
101 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?
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1answer
155 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 ...
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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 ...
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2answers
121 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
137 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 ...
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3answers
284 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 ...
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2answers
141 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 ...

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