Questions tagged [image-quality]

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

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9
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8answers
4k 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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0answers
29 views

What do you consider the boundary to be between acceptable editing and deceptive or misleading practices? [duplicate]

What do you consider the boundary to be between acceptable editing and deceptive or misleading practices?
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1answer
44 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 ...
7
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3answers
18k views

Lens with small scratches on the front element - how do they affect IQ?

I am looking to buy a CANON 28mm 1.8 EF lens. I found an offer, significantly discounted, of a lens with small scratches on the front element. The offer is very tempting. Here is a photo posted by ...
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1answer
52 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
53 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. ...
2
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3answers
546 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-...
3
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6answers
5k 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 ...
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, ...
3
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3answers
382 views

Real world differences in pinhole sized apertures

I'm interested in experimenting with a pinhole camera and am considering the Ilford Obscura or Titan. The focal lengths are slightly different and not of concern for me. What I'm really interested ...
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4answers
161 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
54 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 ...
22
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2answers
2k views

Will I lose image quality by adjusting white balance in post processing?

I understand that if I shoot in RAW, post processing software like Lightroom is capable of adjusting colour temperature and tint to my desire. Will I lose any image quality in process? Or is it as ...
8
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10answers
80k views

How to reduce file size without losing quality or resolution?

I have 2,300+ pictures that I want to transfer to my phone but on their original size they take up a lot of space (6.44gb) I would like to trim is down to without sacrificing quality or resolution. I ...
0
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1answer
176 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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5answers
542 views

Can the specs for a digital camera indicate to me the color quality before buying?

Is there an item in a camera's specifications that can indicate the quality of color reproduction in that camera? There are a lot of things you can find out about a camera before buying from reading ...
4
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3answers
324 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
239 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, ...
3
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1answer
506 views

Does it actually matter considering DxOMark's Perceived MPix Score for lenses?

The score of Tamron 70-200 f2.8 Di VC is higher than Canon 70-200mm f4L IS on an APS-C Canon Camera like the 550D. Does this make the lens better than an L Lens in terms of image quality? Autofocus? ...
0
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1answer
330 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 ...
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2answers
898 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
208 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 ...
17
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7answers
11k 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 ...
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3answers
149 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 ...
0
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2answers
43 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
158 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
262 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 ...
5
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2answers
3k views

What is causing these stripes in my images?

Please don't mind the edited faces. All over the image are visible white stripes horizontally. What could cause them? The image was taken without a flash on a Canon 5D Mark II. Could this be a sensor ...
16
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8answers
16k views

Is there photo analysis software which will pre-sort images by identifying potential technical problems?

I recently went on vacation and took close to 1,000 photographs. As usual there are some good ones, bad ones, blurry ones, etc. In order to expedite post-processing, I was wondering if there is any ...
0
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1answer
98 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
99 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 ...
0
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3answers
351 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
397 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 ...
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 ...
1
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0answers
87 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
312 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
86 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
509 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
120 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 ...
25
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12answers
40k views

Does simply opening and closing a JPEG file decrease image quality?

I've had quite a few photography classes, read many photography books, and screened many forums. And I can't find a consistent answer to this question. One "camp" says there is a loss of image quality ...
7
votes
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
votes
2answers
547 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 ...
27
votes
15answers
48k views

How does the lens diameter influence photo quality?

I have tested two different 50mm lenses in my camera. One was a Nikkor 50mm ∅52mm. The other one was a Sigma 50mm ∅72mm. I took some pictures with both lenses using the same setup for aperture and ...
4
votes
5answers
2k views

Will a lens upgrade from the kit lens give me better colors on my backpacking travels?

I currently have the Nikon D5300 along with the kit lenses (18 - 55mm). I use it for my backpacking travels to make better shots than with the smartphone, but what I've noticed is that the photos are ...
1
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2answers
27k 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 ...
0
votes
2answers
109 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 ...
1
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2answers
92 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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