Questions tagged [post-processing]

Post-processing is the process (and art) of adjusting a previously-captured image to obtain a desired look. It encompasses everything from simple whole-image adjustments to detailed per-pixel touch-up work.

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1answer
76 views

Lens Magnification vs Pixel Magnification

Scenario: I take a picture with a camera that has a crop factor of 3.19. I use a 55 mm focal length equivalent for taking the photo. In the resulting image file header, it says a magnification of 0....
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22 views

Refocusing light field images via Fourier Slice Photograph theorem

I am trying to refocus images from a microlens array light field using Ren Ng's Fourier Slice photograph theorem found in his thesis chapter 5, equation 5.7, which is available at https://stanford.edu/...
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2answers
103 views

How to make a photograph's foreground brighter while making the background darker? [closed]

I took an original picture of a person holding a book. I am trying to make the person holding the book darker, a shadow, and make the book stand out by making it brighter. How can I do this? I am ...
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2answers
67 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
298 views

CR3 Format in darktable

Since I can't afford Lightroom, I figured I would use darktable. As I wanted to import my RAW - files (in CR3) I realized that darktable doesn't support them. Is there a way I can still get my RAW - ...
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0answers
225 views

How to look at a photograph in digital age? [closed]

I was looking at my photo gallery on my smartphone and got shocked because all of them were almost cartoonized and irrealistic. I've realized that as due to an adaptive mode on which the screen was ...
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1answer
170 views

Watermarking processing proof

There are watermarking technologies in videos that are resistant to transcoding and image resizing. There are no visible artefact, it's rather for content protection and tracing. Is there anything ...
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2answers
107 views

What Is Main Cause of Posterisation

I made some post-processing and came to the point to see the gradient in the sky turns into zones separated by sharp borders, which I believe to be classic example of posterisation. Firstly I thought ...
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1answer
135 views

How to edit sunsets & sunrises to achieve a soft, peachy-pink color over the usual orange?

Can you please help me figure out how to achieve the soft, peachy-pink coloring on the sand and light in the images below? Usually, my sunsets/sunrises are much more orange and when I try to edit, I ...
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9answers
4k views

How much ISO noise is removable in post?

I was experimenting by taking photos of the moon using an 1000mm MTO-11ca lens and thought I should get even closer by adding a teleconverter (Kenko Pro 300 3x). The picture quality is not sharp at ...
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2answers
97 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
101 views

what is the cause of halo around dark objects (non-HDR)

This problem occurs often with scenes that have trees with the sky behind. I tend to raise the shadows and reduce the higligts (in RAW) to get a more pleasing image, I believe this is a normal thing ...
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How to imitate the blur on subject outlines after removal of background using GIMP?

Using GIMP I masked out an unwanted person who was situated in the background of my image. This person was partially concealed by my subject. I used the path tool to trace the outlines of my subject ...
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1answer
193 views

How to use quartered circles to correct camera alignment?

I have seen several scales/scalebars for use in fieldwork/scientific photography that include quartered circles (similar to targets). If I understand correctly, those would be useful to correct images ...
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3answers
2k views

Solve unwanted white “waves” and “Pacman squares” in low-light picture - post using Google Photos

After op commented that my picture is super under-exposed, I tried post using Google Photos. But when I increased the exposure, I saw some unwanted white "waves" or rows in the photo. The edges of ...
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1answer
125 views

How to take shots like this [closed]

I want to know how to take shots like this on a motorcycle on a gopro hero 8. Is this effect done in post?
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1answer
127 views

facilitating long-duration time lapse application

I am doing a time lapse that requires about 36 hours, however my equipment limits me to a rather short-duration interval. The longest time lapse setting available is one photo every 60 seconds. The ...
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2answers
81 views

Emulate Shutter Duration on RAW Photos using Exposure Stacking

So I've been on this problem for about a year now and haven't been able to solve it. I gave up on it a while back, but now I'm researched up and ready to get an answer. I'm trying to fake a long ...
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0answers
262 views

How did Apple create the Catalina dynamic desktop background?

The new version of macOS, Catalina, includes a "dynamic" desktop background featuring photos of Catalina Island throughout various times in the day. Here's two of the eight different images: You ...
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1answer
46 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 ...
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4answers
1k views

How can I work around lack of support for Canon's new CR3 Raw format in the software I use?

Canon's new Cr3 file format is not able to be processed in any of the top editing software. Lightroom Classic doesn't support it, nor DX0, or Luminar/Skylum. Lightroom CC subscription will but I don't ...
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2answers
74 views

How can I correct scanned negatives for vignetting caused by a low-end scanner?

I bought a cheap medion scanner which turned out to be a bad idea since the light in it is not evenly distributed and gives a kind of vignette How can I correct it in an open source program that runs ...
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1answer
55 views

Cropping Aspect Ratios [closed]

When Cropping an Image to the 16:9 Aspect Ratio for large screen (TV) display and Judging of an image in the correct viewed aspect, how does this effect the Printed Image?. Would 19:10 be better all ...
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3answers
234 views

seen on NYTimes - How to create this look for high-contrast sunshine images?

I really enjoy the quality of photos seen on the New York Times web page (although they often cover unpleasant topics). A challenge I already faced on my own is the extreme contrast of sunshine ...
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1answer
116 views

How would you remove power lines from a photo in the darkroom?

Ok so removing power lines in Photoshop is trivial. However I am interested in how the process might work with analog photography, in the darkroom. How would you remove power lines from a photo in ...
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1answer
60 views

Process raw image to match lower resolution jpeg

I have some photos where I have processed the image to my liking but unfortunately only saved a low resolution (for instagram) version. I now would like a higher resolution version for printing. I ...
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2answers
101 views

Is Sensor Noise Consistent Between Cameras of the Same Model?

The RAW photo editing program Darktable has a "Denoise - profiled" filter which reduces image noise by using a noise profiles for your camera model and ISO submitted by other users: The darktable ...
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2answers
164 views

How to achieve this light faded, desaturated look?

how can I achieve this look, as seen in photos by Simone Favilli? I love the soft light effect and colours of this image but I don't know how to achieve it in Post-processing. Any suggestions? Thanks ...
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1answer
66 views

Creating different focal depth images from Lytro IIlum

I am trying to use the Lytro Power Tools developer package to create images at different focal depths. I have a Lytro Illum light field camera which outputs the image as an LFR file. I have Lytro ...
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3answers
173 views

Perfect Full reflection from a small puddle possible?

Something like this image for example. Is this possible without any sort of editing? https://www.instagram.com/p/BcWg4HYgRn8/?taken-by=jadgghorayeb
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9answers
7k views

What's the biggest difference between these two photos of large animals?

The first photo (Gorilla) is one I took, whereas the second photo was taken by a more serious (not sure if professional) photographer. The second photo is clearly better but I'm not sure what the ...
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1answer
105 views

No sharpening in post process! How you can achieve that?

Some professionals do not sharpen their raw photos when they postprocess them and the result is still great! How is that possible? Quality of lenses? Different workaround? Thank you!
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14answers
4k views

What are ways to record who took the pictures if a camera is used by multiple people?

My wife and I both like to go out photographing. We usually have only one DSLR/MILC with us, so we take turns in taking pictures. (Rarely, if we have multiple cameras at hand, they usually have ...
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1answer
168 views

Why am I seeing banding with Photoshop but not Lightroom?

Until the most recent update it used to be the case, at least for me, that I would occasionally see banding in Lightroom's Library module, but not in Photoshop. With the most recent update, I now see ...
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0answers
226 views

What causes this repetition pattern in a picture? (when re-arranging its pixels by their intensity - code included) [closed]

Just out of curiosity, I was playing with RGB coordinates and pixels of pictures. Then for some reason I decided to get all pixels of a picture, get the RGB coordinates/values of each pixel (eg. RGB(...
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2answers
77 views

What color photo filter should I use to offset a heavy magenta cast on my color slides after digitizing?

I am in the process of digitizing a large number of slides. All of them have a heavy magenta cast to them.I have been using photoshop to attempt correction but with limited success. The ones that I ...
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2answers
42 views

RAW image to processed output dataset [closed]

I'm trying to learn how to process RAW images into great final images, and my attempts keep coming up short. I think it'd be really interesting/instructive to see what other people have done. In ...
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1answer
43 views

Why does an increase in Y' channel contrast result in apparent desaturation?

And is this the same phenomenon we see when colours appear less saturated during the middle of the day versus dawn and dusk (when luma contrast is reduced)?
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1answer
100 views

Post-processing goal: three different exposures?

I took a photo yesterday on Roan Mountain, on the AT. In the foreground is an overgrown meadow. Midground is a nearby mountain, dark in contrast with the sun setting just over it. In the background, ...
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1answer
174 views

How to get this color temperature [closed]

Regarding this picture, how is it possible to get such a white balance (13750), because when looking at the Exif metadata, this color temperature is so warm. How is it possible? This is a raw file and ...
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1answer
204 views

How to bring such details on face and dull cyan color grading like in this image?

I have sufficient experience in Photoshop and prefer it over Lightroom. I want to know the directions to achieve these specialties of the image below: Facial details in wrinkles and hair. Dull cyan-...
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4answers
155 views

Is knowing the Sun color temperature enough to get the right white balance?

Assuming the picture is taken at sea level, in direct sunlight (no shadow) under a cloudless sky, and knowing the latitude, day and hour, I can in principle determine the color temperature of sunlight ...
2
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1answer
66 views

How can I mimic the color saturation of Nikon's miniature-faking mode?

Nikon's on-camera "miniature faking" tweak appears to increase the saturation, increase the contrast, and perform some selective horizontal/vertical blurring (with a falloff region) for a tilt-shift ...
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1answer
182 views

How does one actually *use* a dark frame?

All of my images were shot RAW, but jpg versions are below for context. I'm brand new to this and have taken the three images according to info I found online. My first problem is that my picture of ...
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1answer
217 views

Gimp perspective tool is not actually transforming

I've uploaded a screenshot below to illustrate the problem. I've dragged a jpeg into Gimp, clicked on the perspective tool, and then attempted to use it...but as you can see, it's not actually ...
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3answers
183 views

Why is my photo partially colour imbalanced?

I have this photo where part of it is funnily colour imbalanced. I took some product shots under couple of 5500K lights. Part of the product was navy blue and it is appearing as black in the raw files....
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2answers
195 views

What causes this leather-grain pattern of noise in the sky when I inspect with a sharp mask?

Noticed these strange patterns in the sky while adjusting sharp masking with "alt" key in Lightroom. In normal mode picture seems alright (and exported variant looks normal too), but I can't be sure ...
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2answers
198 views

How to sort photos by time, while ignoring date?

I'm an ecologist working with trail camera data. I have about 1 million images taken over a period of several months from multiple cameras that I need to sort through for pictures of animals, but ...
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0answers
123 views

Photoshop is screwing up my colors!

No idea how color profiles work, I usually don't import random images. In photoshop, I proofed the colors, used monitor RGB, and I think used that complicated sRGB-{random meaningless string of ...
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2answers
145 views

How to isolate white subject from a white background?

I am quite new to photoshop, but I have always been having problems creating products on a pure white background. I need it for online selling, but it is a daunting task for me--especially since I do ...

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