Questions tagged [color-correction]

The process of making an image appear natural to the eye, either by changing the lighting or by changing the white balance or tint of an image after the fact.

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2answers
299 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 ...
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2answers
61 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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1answer
44 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 ...
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2answers
94 views

Why does the imported JPEG from my Canon Powershot G9X Mark II on PC screen differ quite significantly from the camera display? [duplicate]

Consider the attached sample images. I took them circa 4:50 AM and 3:50 AM, respectively. On the Live View display of the Powershot G9X Mark II, they were full of light. The pictures were taken as ...
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3answers
177 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
1k views

Remove color cast in darktable?

I'm playing with Darktable, coming from Photoshop, and though I really admire most of its features, there is one thing I cannot seem to wrap my head around. In Photoshop, I can easily remove color ...
4
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4answers
380 views

How to stop my camera from exaggerating differences in skin colour?

The skin colour of my subject is widely inconsistent and I am not sure what the reason for it is. To me it looks like the side of the face suffers from a colour shadow thrown by the bright hair. At ...
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3answers
158 views

How can I desaturate reds in post-processing using Rawtherapee (or Gimp)?

I took a few artwork pictures in sunlight. I used Rawtherapee's pipette to find a white balance I'm happy with, but the red are overbright. How can I desaturate reds only ? I had some success ...
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2answers
184 views

How to correctly apply gamma to linear raw files from a machine vision camera?

I am using a machine vision camera that, according to the manufacturer, produces linear pixels. As a result, I need to apply a gamma correction to the image before I can view the result. However, ...
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2answers
379 views

Why would a camera change colors on the image when producing JPEGs?

There's a room with windows closed by curtains, it's night outside and the only light source is a set of LED filament lamps inside the room. Lamps are designed to have 2200K color temperature to have "...
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1answer
121 views

Linear regression to correct the colors of RGB images?

I have several pictures of plants (tif files). Each picture contains a set of Munsell color chips. The "true" RGB values of the Munsell color chips are known. My goal is to correct the colors of the ...
2
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1answer
57 views

For analog color printing, why does a diffused projected image “average” to gray?

In analog printing color negative film to RA-4 paper, one approach is to project the image to the easel, place a diffuser in the light path, and then place a filter calculator (an array of filters of ...
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0answers
53 views

Matching color of HDR panorama

For normal images color checkers can be used to correct images that the color representation is euqual. How is it done with HDR images? How can color checker board measurements be included in the tone-...
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2answers
174 views

Why does white balance knob have green and purple setting?

I first saw this in a camcorder knob and later saw it in a DSLR screen. . Why add tint control to a camera and merge it with WB knob?
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3answers
2k views

What causes blue tint of my photos and how to get rid of it?

I am trying to make a 3D model of a building using a series of photos. This is a photo I took yesterday: This one I took today, when I was trying to continue from that point: Yesterday's sky was ...
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1answer
85 views

It is necessary to create your own profile for camera in product photography?

I'm trying to understand how necessary are the camera profiles (own) in a commercial shoot/product photography. I photograph clothes on a white background on a model (to make it clearer, something ...
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2answers
115 views

What is the technique called where you “simplify” a photo through reducing the complexity of colors in it?

Years ago, I read a blog entry about a photographer whose style included the "reduction of the complexity of colors" in the portraits that she took. It somewhat involved taking the three primary ...
4
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1answer
170 views

Are there examples of food products that appear more attractive in low-CRI lighting?

I am sure shops generally choose lighting carefully to make products appear the most attractive. And I know that low-CRI often make some products appear dull and unattractive. But is high CRI always ...
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3answers
147 views

When is color over done

So Ive been working on a few landscapes recently and the colors were something that Id been focused on - however, after working on images for too long, I find myself over using color and the images ...
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1answer
99 views

Mobile photography and color chart

I have read online that to get colors right in photo you need to use color chart. I have searched online, but have not found any information if color chart is used(should be used) also when taking ...
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3answers
171 views

What readily available items can be used for color correction or reference?

Are there any easily available things I can carry with me, that I probably have already, that I could use as a rough color reference card while taking photos with a phone? I realize that most phones ...
2
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1answer
324 views

How to change saturation on a curve in RGB mode, in Photoshop?

In Lab mode it's easy to change saturation independently of luminosity, by using curves on the a and b channels, but how can you do it in RGB mode? In RGB mode it's still easy to change luminosity ...
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2answers
121 views

Color Calibration on Sharp LC-32LB370U monitor

I'm having trouble trying to fix the color for my Sharp LED monitor. This has been an issue for about a year or so, and I'd still like to use it, but the wrong colors are too distracting. I've gone ...
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3answers
3k views

How to edit photos shot in fluorescent light

I recently shot a series of pictures (portraits and group shots) in a room with bad (fluorescent) light. I had no possibility of changing that lighting situation. Now back at home and in Lightroom I ...
3
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4answers
255 views

How are the turquoise / blue sea and warm sand tones achieved in this photograph?

It seems as if the white isn't really white, but then also the lowtones seem special. I love the way everything looks so warm, but at the same time the blue is blue. Any idea how this artist achieved ...
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3answers
3k views

Relationship between tint-temp and magenta-green-blue-amber white balance corrections?

In some tools, like Photoshop, the white balance adjustment is two sliders: tint and temperature. In many cameras however, a 2D grid is used with one axis being magenta-green, and the other blue-...
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3answers
348 views

Color temperature changing with altitude?

After 50+ years of traditional photography, I went 6 months ago for drone video&photography. Incredible what the change in perspective can do... Anyway, the question is now related with a dominant ...
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1answer
66 views

How to find a pictures properties?

I took a picture and I really like the color and lighting in it so I was wondering if there is anyway to find out the properties, like the contrast/saturation/ tint etc, of it so I could replicate it ...
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2answers
190 views

Why do I lose details in the mid shadows?

I shoot Fuji X-series cameras. Adobe camera raw comes with a camera profile that matches the film emulations inside the camera. I like the colors produced by the Velvia profile (although they are ...
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2answers
172 views

Color consistency across equal cameras but different lenses

I want to stitch images using equal cameras(Point Grey GS3-U3-41C6C-C) but with different lenses. One lense is a wide-angle lense (Sunex DSL318B-650-F2.4) and the other is a fish-eye lens (Fujinon ...
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1answer
318 views

How to create abstract color profile to encode specific color transformation?

I have a set of images (48-bit TIFF) that are encoded in ProPhoto RGB. I have a set of alternative input color profiles (related to ProPhoto RGB, but slightly different) that I can assign to the ...
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1answer
427 views

I have an image that contains a color target, how can I print it in order to get faithful colors?

I have some images and I need to print them with faithful colors. Each image contain a full color target or part of it (I am using X-Rite "ColorChecker Passport Photo"). I did not shot in raw, the ...
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2answers
262 views

How to embed two ICC profiles in an image?

Current task requires to embed input ICC profile as well as output (display) ICC profile such as Adobe RGB in an image. I tried to find a way to do this, for example, with exiftool in vain because the ...
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3answers
1k views

How to remove vignetting and color cast from wide angle lens?

After shooting several images with the Samyang 12mm f/2 for mirrorless APS-C, I noticed it produces a quite strong color cast. It looks like green vignetting. As far as I know, this isn't uncommon for ...
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5answers
232 views

In Auto white balance, why the reference is always taken as neutral colors like gray or white instead of other colors like orange or red?

Why auto white balance is based on the neutral colors?..Is there any care to be taken while choosing the reference color.?
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5answers
1k views

How to get correct color balance for night shots?

I was trying to get a shot of a red moon, but the color was coming out wrong obviously due to a white balance problem. Adjusting the white balance after the fact was not an option because I would ...
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4answers
280 views

Set ISO sensitivity per channel?

To control color balance in digital camera exposures it would potentially be useful to be able to change the sensitivity of the sensor on a per channel basis, or alternatively to be able to apply an "...
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3answers
1k views

How do I remove these purple color casts in RAWs of a really dark scene?

I'm photographing a really dark scene with my iPhone 7 Plus in RAW, and exporting it to JPEG in Lightroom 5: Notice the purple cast throughout, especially in the corners. The in-camera JPEG doesn't ...
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1answer
88 views

What white balance should be selected if the photo is supposed to completely surround the viewer?

Suppose you shoot a cubemap to be viewed inside a room with walls, ceiling and floor being screens showing the scene you shot. The monitors should obviously show the images as closely to what would be ...
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4answers
812 views

What's the correct term when a photo is over saturated? [closed]

What's the correct term when a photo by exposure or digital post looses colour difference in upper area, bleeding? Over-saturation? UPDATE: Example at https://www.dpreview.com/reviews/canoneos1d/22 ...
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2answers
698 views

How to get accurate color and contrast when scanning shots with no black or white point present?

To correct the initial color balance and remove the orange mask of a scanned color negative we would normally set black and white levels to just barely clip each color channel. This works fine with ...
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4answers
241 views

How to compare 2 cameras' color accuracy quantitatively with standard color chart?

I need to compare the color reproduction accuracy of 2 cameras quantitatively, in RGB space or Lab space. In my set-up, I use the same standard lighting source, same lens(same focal length and same ...
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2answers
160 views

Is it possible to simulate any color-only filter with curves?

In this question it was asked whether it was possible to reproduce any color-only change to an image using just curves. In my answer, I said that there were color-only changes such as conversion to ...
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2answers
690 views

How to color correct using known RGB values of a single pixel?

I have a photo and I know what RGB coordinates a pixel in that photo should actually have. Based on that information, how do I correct the entire photo?
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2answers
195 views

How to deal with fabric colors? Studio strobe lighting

i've problem with colors. On the right is fabric with WB set with X-rite Color Checker Passport, and the camera profile is also made with Passport. On the left is this same photo but after more ...
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1answer
124 views

Is there a way to remove this green flare?

I took a picture where the sun was just to the left of the subject with my mobile camera. Due to the sun I couldn't see my screen after I'd taken the photo and didn't realise there was a slight green ...
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1answer
1k views

What is the quality of Fotga filters?

I am looking for a cheap beginner filter kit. I came across Fotga in ebay, but I could not find more information about the manufacturer on the internet. Do you know about them? Is the quality ok?
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3answers
1k views

Sony DSC-RX100 gives unnatural (depressive) colors

I am amateur photographer and I have Sony DSC-RX100. The photos it gives have great quality in terms of resolution, sharpness and crispness, but they have some "dark", "sad", "depressive" unnatural ...
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3answers
321 views

How to use colour charts and patches for color restoration of old photographic films?

I work for an institution with a large photographic archive of art, containing among other things colour negatives and ektachrome films. My team is digitizing the films and in the meantime we want to ...
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4answers
308 views

How to restore color of wood photographed under fluorescent lighting?

I have taken photos of a church organ console with a digital camera, but the lighting conditions were very low. That's why I used an umbrella + daylight fluorescent bulb (from a kit similar to this ...