Lightnings taking a ride

by ceinmart

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Color is the human perception of light as having different hue, from reds and oranges, through yellows and greens, to blues and violets. Color is a fundamental aspect of the arts and photography.

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29 views

When to use LUV and not RGB colourspaces

Some applications extract information from images in the LUV colour space and not directly from the more commonly used RGB. Why is that?
0
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1answer
118 views

Batch saving images with reduced colors

I'm trying to record and run a macro in Photoshop that saves images as PNG with just 8 colors. Recording the macro, I save for web, select the options I want, and hit save. But when I play back the ...
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1answer
36 views

How to decide the colour combinations while setting up still life objects?

Let's assume I have bottles of different colours. I want to make a still life photograph with them. How should I decide which colours go well with others? Example - should blue bottle be placed next ...
7
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8answers
998 views

How do I accurately capture the colour of sunlight on a wall?

I found a brilliant yellow area of sunlight on my wall, and I wanted to capture this color. I took a photo with auto WB, on my NEX-5R: The sunlight in this photo isn't yellow enough, so I switched ...
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3answers
111 views

How can I get my colours true for product photography?

I am struggling to get some colours correct in my product photography. I have used a gray card to set a custom white balance and also tried AWB in the camera, but still seem to have trouble getting ...
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1answer
125 views

Why do the thumbnails for grayscale images show up in color in Windows Explorer?

I have some images from a Nikon SLR that I have converted to grayscale, however the thumbnails in Windows Explorer are in color. Is the thumbnail information stored in the file header, or is the color ...
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5answers
8k views

Is there an equivalent to Adobe's “Vibrance” in Gimp?

See: What's the difference between saturation and vibrance in Lightroom? In a nutshell, Adobe's Vibrance is a "smart" color adjustment that increases saturation selectively, leaving skin tones ...
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3answers
1k views

Can I do “back conversion” of a B&W JPEG to color?

I have a black and white JPEG. It is in fact an RGB image, which means that the color is still there. And I know from past experience that when I shoot B&W with my Canon, the color image is still ...
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2answers
73 views

Why does frame stacking alter colours?

I apologise in advance for the subject matter of my photos. I've not tidied the table for a few days. I needed indoor artificial lighting for the long duration of this experiment. Both images are ...
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1answer
112 views

Why do all my landscape photos turn out so milky, almost foggy, and lack both contrast and color?

I don't really know how to explain it, but I guess the photos speak for themselves. What can I do to stop it from happening? I'm more trying to capture nice memories than take amazing photos, but the ...
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4answers
130 views

Why do some pictures look darker online than on my computer?

I'm shooting raw and I'm on ubuntu. This happens mostly with pictures that have a lot of black or that are very dark. On my screen the picture looks fine (as intended) but when I upload it to 500px or ...
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3answers
126 views

Why can I see beyond sRGB in CIE Chromatic Diagram

According to CIE 1931 color space chart, the sRGB gamut is what's inside the triangle: As you can see from the diagram, blue is shown outside the sRGB gamut (at about 460 nm wavelength). Knowing ...
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1answer
46 views

How to minimise the noise in colour values when moving between colour spaces?

Let's say I was to change from RGB to HSV using a software like Matlab and then convert the result back to RGB using the same software. I know that there are going to be some slight noise and error in ...
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3answers
1k views

How do color spaces like sRGB and Adobe RGB overlap?

Is sRGB included in Adobe RGB, and Adobe RGB included in ProPhoto RGB? Meaning that a photo in a "lower space" will look like exactly the same in a "higher space", e.g. a sRGB photo will look like ...
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2answers
62 views

What is the difference between HSV and CIE-Lab color space?

When do we (or should we) use HSV color space and when do we use CIE-Lab color space?
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7answers
4k views

Why do bright red flowers end up without details?

With our DSLR, indoor flowers come out detailed. Outdoor violet and blue flowers are detailed, too. But outdoor bright red flowers give us problems. They come out as a single flat detail-less spot. ...
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1answer
130 views

Per-Application Color Management under GNOME3

I have recently used DispcalGUI and a Spyder4 to calibrate my monitor. I have selected the resulting calibration profile with the GNOME setting manager. However, instead of making my workflow more ...
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5answers
17k views

What is the difference between halftoning and dithering?

As I understand it, halftoning is the process of taking an image with a given color range (as defined by the colorspace) and blending the colors to form an image with a smaller range of colors. How ...
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5answers
6k views

Why is wrong color coming out of my Rebel T3i?

I'm not a professional at all but bought a Canon Rebel T3i to capture life's moments. The color of my shots are way far off; ie., my sons navy blue and white baseball uniform comes out bright green ...
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1answer
74 views

Color shift on the same photo between my mac and my iPhone

I just finished editing a picture and saved it in JPG on my Mac, which look perfectly fine. I sent it to my iPhone and the color completely shifted and look dull. I was wondering what could make such ...
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4answers
306 views

How do I find the absolute color of someone's eyes in a photograph?

The color of my eyes is between green and blue. I've always been curious if it's more blue or more green. People's opinions are of course different, so I would like to find it out scientifically. How ...
9
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3answers
494 views

Why are the colors so different in these two photos from different cameras even though I set white balance to the same temperature in Lightroom?

I have a Nikon D750 and D800e. I was attempting to run an ISO test on the two, but I can't put my finger on why the two came out with such a different color balance. Here was my method: Put D750 ...
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3answers
35k views

How can I create a soft pastel tones preset in Lightroom?

Could anyone give any recommendations or links that may help me make my photos in soft, pastel tones, like photos from these albums: http://air-we-inspire.livejournal.com/102576.html ...
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2answers
6k views

Why do my image colors look drastically different in Photoshop than Lightroom on two calibrated monitors?

I am using Lightroom 5 and Photoshop CS5. I have two monitors, both are calibrated, (one is a better screen and more precise but they are very close.) When LR is open I can drag it from one screen to ...
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6answers
3k views

How can I increase color saturation naturally?

I just went to a gallery where the photographer had incredibly colorful/saturated photos. Along with them was a sign "unaltered" which I assume means HDR was not used. This appeared to be a medium or ...
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1answer
81 views
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3answers
232 views

Skin very red, blotchy in front of camera

I'm shooting vlog-like videos with a Canon SL1. My skin looks very blotchy, pasty, and red (see below). Anyway to fix that? Here are the settings: Shutter Speed: 60 Aperture: 4.5 ISO: 800 ...
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3answers
1k views

How to calculate mean/average photo color in GIMP?

How to calculate mean/average photo color in GIMP? I have some photo and want to calculate average color - how can I do it?
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5answers
3k views

What's the difference between colour space and bit depth?

I know that there are different types of colour space and that sRGB is the most common. Bit depth defines the variations of a colour channel, where (I think) 8 and/or 16 bits are the most common. ...
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1answer
122 views

Which color for a job interview portrait?

For a job interview portrait, I need to make a picture that reflects leadership, creativity and flexibility. What color or colors should I use? Also, after pick up the color, should I use a tone ...
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5answers
2k views

Does black and white photography still make sense?

I think at first it was because of a limitation of the cameras present at the time, but with the color cameras that we have available now, what do you think of black and white photos? In other words, ...
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1answer
328 views

Can anyone reproduce the white/gold vs. blue/black dress's binary perception effect with a totally different subject?

Yesterday I asked about the strange Internet phenomenon of the dress which people very strongly perceive as either white and gold or blue and black. Here is the original: There are many theories ...
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1answer
241 views

Why is there a colour cast when using an incorrect white balance?

I understand what colour balance is and how it is meant to be used. However I don't fully understand why we see what we see if an incorrect White Balance is used. If for example we take a photo out ...
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2answers
113 views

How is the spectral response of a camera typically measured?

I cannot find any resources that detail a standardized method of measuring the spectral response of a camera. Does such a standard exist? Does anyone know how to do this? To give some context, I'm ...
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5answers
102 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 ...
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2answers
120 views

How can I convert a photo to a fixed palette with pre-defined weighted color proportions?

I am creating a physical mosaic from a photograph, where each mosaic tile will correspond to a pixel of the (scaled down) original picture. The problem is: my tile color selection is limited, with the ...
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4answers
100 views

How to take a picture of a point light source?

I work in a scientific laboratory and I need to take a picture of a sample that emits low intensity visible light (blue) when an infrared laser (980 nm) is pointed to it. I am using a filter with an ...
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3answers
632 views

Why can't one calibrate a monitor with a DSLR & a color chart?

The idea is simple: Take a RAW photo of a real color chart outside to get a white point of D65. Use that to get an accurate color correction matrix for the camera sensor. Use the same camera to ...
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7answers
1k views

Is there any point in photographing directly to black & white?

As opposed to photographing in colour, then having all the freedom to edit it afterwards?
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5answers
90k views

How do I select all pixels that match an exact color value in Adobe Photoshop?

Is there any way to select all pixels on the current layer that match a specific color value exactly? My first instinct is Select > Color Range..., but I cannot determine how to input a specific ...
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4answers
576 views

Why does BRIGHT red in direct sun come out orange?

I was at the NEC today dropping off a car for an auction, and took this quick photo (no intention to use for anything so no attempt at composition!) This was taken on a LG Nexus 5 mobile phone. I ...
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1answer
130 views

How can I achieve a color grading like in this photo?

I really like the effect from this photo and I know it's color grading, but I wanted your opinion on how I can get the same effect. The photo is available on this link. (The website is The Chriselle ...
3
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2answers
433 views

X-Rite i1 Display Pro - settings for a notebook

I recently bought a digital colorimeter from X-Rite, precisely an i1 Display Pro. I tried different configurations, with and without Flare Correct, small and huge color palette, with and without ...
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13answers
6k views

Do photographers see ambiguity in the color of the blue/black (gold/white) dress?

Okay, so, this has taken the Internet by storm today... You've probably seen it and lots of commentary. Apparently, many people see this as gold and white; to me, it's unambiguously blue. There are ...
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4answers
285 views

How can I colorize my astrophotography?

I want to color a photo that I took from my telescope, which unfortunately only captures black and white images. How can I add color to it, let's say using Photoshop... is it possible to color only ...
2
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1answer
93 views

How can I automatically correct aerial perspective in landscape photographs?

Because different wavelengths of light are scattered differently in air (there are actually two distinct types of scattering involved) light on the red end of the spectrum is scattered far more than ...
8
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3answers
281 views

Is there a specific color temperature to film?

Recently, I was taking some pictures of the snow using Kodak Gold (I believe) 200 and Fuji Superia 200. When I got them developed, I noticed that the Kodak had a "warmer" feel to them than the Fuji, ...
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1answer
262 views

What is the native color gamut of a modern digital sensor?

What is the area of CIE 1931 diagram that is being covered by contemporary digital camera sensors? I can find triangles for LCD panels being comapred to sRGB and aRGB and ProPhoto. There are always ...
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7answers
2k views

Why are there no dark yellows, or bright violets?

In his book The Photographer's Eye, photographer and author Michael Freeman says: Another consideration is relative brightness. Different hues are perceived as having different light values, with ...
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2answers
126 views

Does the right calibration temperature for my monitor depend on season?

I just bought X-rite calibration kit but one thing makes me curious. Should I set colder white point (6500K) for summertime and warmer (5000K) for winter? Will global warming cause atmospheric effects ...