Spring 2012

Spring 2012
by ani

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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.

learn more… | top users | synonyms (1)

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3answers
150 views

What is the “right” displayed color?

Taking in consideration the web environment only, not screen-to-print jobs, let's suppose that we have a font color e.g. #f1ecd6 Hex, displayed by a LCD, properly—by a hardware device—calibrated, ...
4
votes
3answers
160 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 ...
14
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6answers
131k 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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0answers
329 views

Is it normal for the Canon 6D to exhibit more color noise compared to a 50D?

My first day with 6D, upgraded from a 50D. Wouldn't be pixel-peeping but something unusual caught my eye when I opened photos in Lightroom this morning. The color noise pattern is completely different ...
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2answers
86 views

How to select foreground color for stroke in a Photoshop action?

I am making an action in Photoshop CC to create a narrow border around images. I chose a foreground color from the image using the eyedropper then recorded the action to Add new layer called "Border"...
6
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4answers
2k views

RAWs looking massively different in Aperture/Mac OS Preview compared to camera preview and (Canon) PictureStyleEditor

Yesterday, I have been shooting photos at a christmas market -- especially a band that played there. Since everything happened in the evening and it was quite dark, I thought using RAW instead of JPEG ...
5
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2answers
579 views

How to make color darkroom prints?

I'm diving into the intimidating world of color darkroom prints (RA-4). I've heard some things (no safelight, needs to be the correct temperature, and so on). However, I haven't really found a ...
4
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2answers
218 views

How can I add life to the dull skin tones in an image taken under low-CRI lighting?

This photo was lit with a homemade LED light panel, and I suspect the low CRI of the lighting was one of the reasons that it looks kind of dull. I've white balanced it as correctly as I know how and ...
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3answers
2k views

How can I whiten my background, without whitening the subject or modifying subject colours?

If I take portraits against a white background I like to use a colorchecker passport to ensure that my subjects come out at the end of my workflow looking 'true to life'. The problem is that due to ...
2
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1answer
136 views

Why would one lens produce warmer colors than another?

I was recently watching the following comparison video between the Nikon 85mm 1.4G and 1.8G (judge as you will): https://www.youtube.com/watch?v=gZkbEivJbUw When they showed off very similar ...
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2answers
117 views

What's the perfectionist's workflow for taking a photograph from capture to print?

I'm interested in perfecting the 100% ideal method of doing things, keeping the color tones and quality through capturing to the printing and publishing. This isn't about handling the camera or doing ...
5
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5answers
2k views

CMYK vs RGB - Can a DSLR take CMYK images?

I seems that all cameras take photos in RGB format and printers take photos in CMYK format. If the photo is not in CMYK, then the printer converts it to that format with some loss of quality. Can the ...
3
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3answers
94 views

How do I develop a workflow for color, considering all the eqivalent operations?

Edit for clarification: I'm asking how to develop my own preferences in the cases where there's more than one way to do things, without developing bad habits from being self-taught. I've just started ...
3
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3answers
1k views

Why do my images look different on my camera than when imported to my laptop?

I have been taking some photos with my new camera, and have found that once I import them to my laptop, the colors look washed out, and not as nice and vivid as on the camera LCD display. It's a Sony ...
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4answers
3k 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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2answers
638 views

Adobe lightroom changes colors after importing pictures

I have a strange problem where colors appear to be inverted when I load in my pictures of the recent bloodmoon into Adobe Lightroom. Here are two pictures (on imgur) showing the difference between ...
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1answer
250 views

What resources exist to learn how to create “good” Custom Canon Picture Styles?

After many years shooting with Canon I have only just realised that you can edit picture styles on your computer using Canon's Picture Style editor tool and then load them into the custom slots on ...
2
votes
1answer
114 views

Studio lights change color of the object

I have simple setup with two softboxes on sides and sheet of white paper on which object is placed, in my case it's a shoe. Camera Nikon d3100 (21mm, f/8.0, 1/25s, ISO 100). Shoe is brown under ...
2
votes
3answers
130 views

Are there graphic cards that allow calibration of conventional laptop displays?

I am about to buy a new laptop and would like to use it for photoediting. It would be nice to be able to adjust displays colors so they are accurate and display the real colors. Are there any ...
1
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1answer
56 views

Using my camera to find the best spectral color match [closed]

Note If this question isn't interesting to think about, don't bother spending time on it. I pose it partly because I think it is fun to see what you can do with a decent camera that you didn't expect (...
1
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1answer
98 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?
2
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1answer
66 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
1k 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 ...
2
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3answers
335 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 ...
21
votes
5answers
9k 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 ...
6
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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 ...
2
votes
2answers
109 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
176 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 ...
2
votes
4answers
822 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 ...
3
votes
3answers
189 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 ...
5
votes
1answer
68 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 ...
15
votes
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 ...
2
votes
2answers
266 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?
9
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7answers
5k 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. ...
4
votes
1answer
160 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 ...
9
votes
5answers
22k 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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4answers
503 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
votes
3answers
808 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 ...
5
votes
2answers
7k 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 ...
9
votes
6answers
4k 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 ...
3
votes
3answers
668 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 Lighting:...
9
votes
5answers
5k 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. ...
0
votes
1answer
141 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 ...
14
votes
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, ...
1
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1answer
489 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 ...
2
votes
1answer
264 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 ...
3
votes
2answers
514 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 ...
3
votes
5answers
169 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 ...
1
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2answers
177 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 ...
0
votes
4answers
130 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 ...