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by Aditya

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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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17
votes
3answers
774 views

How much of a difference do different color spaces make?

How much of a difference does it make to use one of the extended colorspaces vs. the normal sRGB? And what difference does it make? Are there situations where it is not important, and conversely are ...
0
votes
1answer
189 views

color errors in dark areas - canon 700d/t5i

yesterday I bought an Canon EOS 700D with kit lens 18-55 STM. On my test images I encountered green "clouds" on dark areas. Is there a name for this kind of error and does it originate from the lens ...
2
votes
1answer
58 views

Reducing color balance errors across multiple cameras

I'm an electrical engineer, but I thought I'd ask this in the photography section to get some more insight from experienced photographers. I am designing a system which will stitch images taken by ...
4
votes
2answers
211 views

What does 'freedom of color from white or gray' mean?

The dictionary entry for the word chroma says, "the purity of a color, or its freedom from white or gray." What does that statement mean? What is color made of? What causes color? I was reading this ...
26
votes
7answers
1k views

Is it possible to be color-blind and still be a good photographer?

Is it possible to be colour-blind (or color-blind, in the US) and still be a good photographer? Are there any steps one can take to mitigate the effects of colour-blindness? Can you point me to any ...
3
votes
3answers
664 views

How do I create this soft and bright effect?

This is my favorite look for photos, and I've been trying to achieve this for some recent family vacation photographs. What is the process? Here are some links to some examples: ...
9
votes
4answers
956 views

Are there written guides or rules of thumb for setting color saturation, clarity, vibrance, etc. in post-processing (or in general)?

This isn't another "how do I get a picture to look like such-and-such-link-inserted-here in LR" question. There's a saturation (no pun intended) of these questions here. Interesting, but not general ...
2
votes
5answers
317 views

Is it possible to increase digital color depth via interpolation?

I have a set of photos that where scanned at 8 bit color depth. Is it possible to increase the color depth digitally? I realize just increasing the color depth would gain me nothing unless it also ...
3
votes
1answer
184 views

What's an easy way to batch assign (not convert) an ICC profile to .JPG and .CR2 Canon RAW files?

All of the files that comes out of my camera (Canon Rebel T3i) are not assigned a colorspace. Instead, all files the format IMG_XXXX.JPG/CR2 are implied sRGB and _MG_XXXX.JPG/CR2 are implied Adobe RGB ...
13
votes
9answers
13k views

Why is Aperture changing the color of my RAW photos?

For some strange reason, Aperture 3 seems to shift the colors of the raw images, after importing them. For example, the reds become washed out and something not red. In the following example, the red ...
8
votes
6answers
3k views

How do pros manage to make the color green so bright in their nature photographs?

I am an amateur photographer, I had a question how do professional photographers manage to make the green color so bright in their images. For example: ...
2
votes
1answer
195 views

multiple pictures give different shades for same scene and lighting

I am photographing an object 4 cm away from the camera using 5MP phone camera. It is being used in macro mode with fixed ISO 100 setting. Automatic White balance is being used along with ...
10
votes
4answers
888 views

Why does the red area in this photo look very un-natural?

I was looking through some photos I took at RAF Cosford a few weeks ago, and noticed this big red area (it's a large door surround on the floor below) In the photoshop RAW preview, it looked almost ...
4
votes
1answer
154 views

Why can my old Epson dye printer produce accurate reds but my professional lab can't?

My professional print lab uses a high-end Fuji Frontier machine with its own profile that the customer downloads. The prints are of exceptional quality, except for the colour gamut, particularly with ...
3
votes
4answers
314 views

How does one do light painting with in focus subject? Maybe a composite?

I understand and have tried some rudimentary light painting, but I'm still not sure how one might achieve something like the photos here: http://www.modelmayhem.com/portfolio/pic/18221422 Is this ...
5
votes
3answers
1k views

Does a high ISO generally result in bad dynamic range and less accurate color?

I have a Pentax K-x. I've had it set on "auto ISO up to 6400" for a while now, and I'm starting to wonder if this is making my images worse. Honestly I don't trust myself to tell. Does a high ISO ...
1
vote
1answer
695 views

Can Canon Rebel T4I take black and white photos with color accents?

Can A Canon Rebel T4I shoot B&W pictures with color accents, as you see in some pictures where only one thing has color?
5
votes
0answers
48 views

How does lens design affect the richness of color reproduction? [duplicate]

Comparing a kit zoom lens to a faster, 20-year-old prime it seems like the old lens produces richer, warmer color. I've noticed the same kind of comparisons elsewhere. What is the lens actually doing? ...
17
votes
5answers
19k views

How many colors and shades can the human eye distinguish in a single scene?

How many distinct colors, shades, hues, and tints can the average person distinguish in a single scene? In other words, what's the theoretical bit-depth required to be sure of recording a photograph ...
2
votes
3answers
238 views

What are techniques for enhancing visibility of photos under natural, outdoor daylight?

I'm trying to find techniques for making photos more visible under daylight (i.e., when daylight reflects off the photo displayed on a screen or print). Does anyone know of any photo editing ...
1
vote
2answers
350 views

What does it mean when an RGB histogram and luminance histogram look similar?

What does it mean when both RGB histogram and luminance histogram look similar? Please explain in detali.
-1
votes
1answer
187 views

strong colour photo compositions [closed]

How do you take photographs with strong colour compositions? I have a canon 60D and Im a learner. Do you have any tips / best practices you could share? I would like to take pictures like the ones on ...
7
votes
1answer
307 views

What is Colour Rendering Index (CRI)?

From this answer on white balancing a LED light I understood there's a thing called Colour Rendering Index (CRI). I understand it has something to do with how well lights reproduce the sun's colour ...
11
votes
4answers
394 views

What are ways of improving aerial photos?

When taking photos from a plane, what are ways of improving the quality of your photos? I've noticed two main issues: When photographing through the plane window, you'll often get reflection and ...
1
vote
4answers
206 views

Why are these lights all different colours and how can I correct them?

I occasionally take panoramic city photos and I've noticed that certain sections of the cities have a lot of different coloured lights. What causes these different lights? Some of these appear to be ...
15
votes
3answers
2k views

Why not use a camera as a colorimeter?

Clearly to achieve reliable results, it is essential to calibrate key parts of the imaging pipeline - particularly the computer display on which images are edited. Few seem to question the ...
-2
votes
2answers
196 views

Blend colors evenly (dissolve-like) in Photoshop [closed]

Is it possible to blend 2 pictures using similar technique like dissolve but more precisely? I need to mix sources evenly - 1 pixel from the top layer second pixel from bottom layer etc. I work with ...
4
votes
3answers
253 views

How can I avoid a blue sheen on red objects?

I have taken a few images of (Very) red objects recently, under both flash and natural light separately, and seem to be getting a subtle, but annoying blue sheen, which is not apparent to the eye. No ...
0
votes
4answers
453 views

What color system best differentiates Yellow/Red/Black? [closed]

I'm working on a image processing system to segment three different types of pixels that are more or less Yellow/Red/Black. Now my question - which I though it's best to be asked here - is that which ...
4
votes
2answers
386 views

Why do I have a purple tint on black lines on white backround?

I've taken this picture with a Nikon D3200 using the 50mm 1.8 lens. It contains bulbs hanging from lines stretched across two structures with a building and some sky in the background. At the top of ...
8
votes
3answers
343 views

How did Matt Grum color correct the images in “Why is the Fluorescent filter for a flash green?”?

I saw in another question - "Why is the Fluorescent filter for a flash green?" - that Matt Grum had amazingly color corrected two images and would love to know how. Of course, all are invited to ...
5
votes
2answers
501 views

How does fading light affect color vision?

It's well known that the cones in retina are unable to distinguish colors in dark, leaving us only the monochrome softer vision provided by rods. And personal experience tells this "switch" to ...
6
votes
6answers
2k views

How does aperture size or shutter speed affect color temperature?

With all other parameters assumed constant, does aperture size or duration of exposure have any effect on the resulting color warmth or vividness? (Even slightly.) While answering please also ...
1
vote
2answers
1k views

Why isn't color from my Canon 550D up to my expectations?

I am using a Canon 550D and I am not satisfied with the image quality that it offers. By image quality I am specifically concerned with a general feeling of better color. I have used different lenses ...
1
vote
2answers
175 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 ...
0
votes
1answer
90 views

Color issue - Previews in Bridge are way different than outputted PDF

I am generally able to modify files xmp data for white balance/exposure, then output from bridge as a contact sheet without any issues. I've switched to a different MacPro and upgraded to Mountain ...
21
votes
2answers
5k views

How do I get good colors when taking pictures in the city at night?

I'm very interested in doing night time shootings. I'm using Canon 5d3 with 85mm at f/1.2, and at iso 2000 I'm able to get exposure times around 1/150s-1/200s. However, the lighting in my city ...
3
votes
5answers
1k views

How do I achieve a vintage photo effect in Photoshop?

How can I achieve this vintage color tone in Photoshop? Photo link
4
votes
2answers
358 views

Why am I getting a cyan cast on Epson Claria printer only in the highest-res print mode?

I use an Epson R260 (Claria 6-color dye) printer with a continuous ink system supplied by Echostore.com for proofing. I use generic storebrand Staples photopaper for this. It's not super-white; it ...
23
votes
2answers
5k views

What do Hue, Chroma, Saturation, Value, Tones, Tints, Shade, etc. mean?

I've read several online tutorials about color theory but I'm still confused about how to "visually" catch color concepts and use them efficiently. The only thing I seem to understand is "hue" which ...
3
votes
3answers
1k views

How does color depth differ from camera to camera?

Which is part of the camera that is responsible for color depth of the images?Is it the property of the image sensor or the image processor of camera? And why do it differ from cameras?How much effect ...
2
votes
2answers
362 views

Can the camera select wrong exposure just because of color?

I took two pictures of two different flowers with portrait setting. One came perfectly exposed with dark background, the other seems over exposed with brighter background. I tried it again and the ...
6
votes
3answers
648 views

What do the measurements for colour depth mean?

Colour depth is often referred to as being X bits. What does this mean and how does it effect a photograph? What scale is used, i.e. is it linear, exponential, logarithmic, etc.?
18
votes
4answers
6k 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 ...
2
votes
1answer
108 views

What is mapped color and how to use them in astro-photography?

On some astro-photography website, I come across some incredible images with caption that says "X in mapped color" such as: http://www.rc-astro.com/photo/id1066_big.html What is mapped color? Why and ...
8
votes
4answers
4k views

How is the YCbCr color space represented in a JPEG image?

I know that a 24 bit image dedicates 8 bit each for R, G and B. Is it just for RGB color space. In YCbCr color space for a 24 bit JPEG image, how are the bits distributed?
1
vote
1answer
565 views

False colour effect in lightroom

I'm trying to do a false colour effect on my IR foto's, however I can figure out how to do a false colour by swapping Red and Blue channels. What do I have to do to get a false colour effect in ...
8
votes
3answers
388 views

What is the significance of the word “Color” in the names of some older lenses?

This seems closely related to How does a lens affect the saturation of a picture?. Some older lenses I've seen contain the word "Color" in the name, such as Color-Yashinon and Color-Skopar (the ...
7
votes
4answers
377 views

Is the fake “Old photo look” taking the emotion out of real ones?

I have seen a LOT of digital images processed to make them look old, i.e. faded polaroid, sun damaged, multiple exposure, light leakage etc etc... I am really starting to struggle to understand why ...
8
votes
1answer
399 views

Is the use of coloured lighting in industrial photography a bit… Passée?

I have been asked to do some photography around an aerospace engineering company, they make parts for planes basically. Having looked at their previous imagery stash, taken i think 2003 ish, the ...