What does rgb mean in photography

Using RGB lighting creates more inspirations while finding the little spark that went missing when traditional methods have been used only. Instead of preparing unattractive background boards which would take up certain room, making the RGB LED lights emit on a white background can easily satisfy the need for multiple color backgrounds.

Besides, unequal lighting can be avoided by practicing positioning as well as resorting to modifiers according to the size and distribution of lights. Moreover, some RGB lights provide circulation among various colors at specific speed, namely, more choices are optional for photo backgrounds. It happens that, even if the particular color setting can make one person look better, it does not perform the same effect on others. In this case, mixing and matching colors then applying them on the subjects as necessary, no matter a person or an object, is a good way to shape more specific and unique details.

During production, additional lights are used other than natural light source and some may wonder, where this peculiar light comes from? So why not try to capture the actual lighting into the frame for a fresh sparkle in creation? Try to lead the viewers into the scene that has been created and show them how it is created in a lively and vivid way. Unlike the traditional gels and filters, RGB LED can be programmed to be any colors or any lighting effects, such as the simulation of street lights or candles and flames.

As the RGB lighting becomes more common, its price has been cut down while its capability has been discovered. It is up to the users on how to make the best use of it to achieve satisfying results. The RGB color profile involves adjusting each of the values for the red, green, and blue channels from 0 to to change the color of the image.

With this, you can create any color in the rainbow, as well as grays, whites, and blacks. Playing with Photoshop or an online color generator will give you a better idea of how this works. How exactly does it apply to photography? Lifewire tells us that when we take a photo using our digital cameras, our photos are composed using the RGB spectrum. A pixel is just numbers that specify the definition of one RGB color — just a tiny dot of color, much like one small colored tile in a mosaic tile picture.

The digital numeric concept may be relatively new today, but the mosaic tile concept is at least years old. However, our home printers do expect to receive RGB images because that's what we have to give them, and then they do the CMYK ink conversion. There are many possible shades of a color. Don't worry if the numeric values seem difficult to predict, some of them certainly can be.

A little experience helps some, but typically only web page work needs to know much detail. And in practice, it's easy, as there are many web references to help, and for web pages, we can simply look up the proper codes for the desired color.

There's also a color picker from Mozilla to play with to match the colors to the numbers. The Photoshop Color Picker is a similar tool. Each of the individual R or G or B components are normally 8-bit values, each in the range of [ One image pixel's color is a combination of the three R,G,B basic components then called bit color. For example, we know from grade school that red and green make yellow. Later in science we learned White light is a mix of all colors.

Numbers up toward are bright, and down near zero are dark or black. Numbers : Any light when in any path to our eyes from the scene or a monitor , is ordinary linear color. Our eyes expect to only see ordinary linear analog light not digital. However, the usual numeric interest of photographers are the digital RGB numbers in the camera or scanner, in the image file or histogram, in the computer or internet meaning any digital image, as shown here which are encoded to be different gamma numbers.

But thereafter, any image's light from the monitor has been decoded to linear again. Linear in math has a proportional straight line curve definition, but linear in photography also means "not a gamma image" either not yet, or not still.

Gamma is an automatic process handled by cameras, scanners, monitors and printers, and so can be ignored, but if interested in the histogram or editor numbers, there is a short summary of gamma below.

This 24 and 8 are two definitions with two different meanings. The three RGB colors are each 8-bits possible values [ Of course, any one real photo image will not use most of these possible colors. A forest scene is probably mostly green colors, and an ocean or sky scene mostly blue, etc. A smaller resample loses detail when every remaining pixel is combined from many, to be one averaged color. It's an ancient defense wall in Kotor, Montenegro, but the distance needs enlargement to see.

A little boat in fog on sea, almost devoid of detail. Everything being the same color is easy to compress. So image detail level has effect on file size, and resampling size has effect on file size, and JPG Quality has effect on file size, so file size alone is not a meaningful measure of JPG image quality, nor of image size.

The Size of all four of these is x pixels, and the JPG Quality setting is all the same, but the file size varies, in this case due to image detail content. RGB is called "device dependent" color, because may not appear exactly the same on different devices, but will be the brightest that each device can show depending on its inks or phosphors, etc.

A printer and a video monitor have different capabilities: viewed with light reflected from ink on paper, or direct transmitted light from the video screen. Speaking of the reflection of black, one yard of dress makers black velvet cloth material will make a really black background for tabletop photos, because the deep fibers trap and capture the light. It will appear utterly jet black, and other black cloth or paper won't, not unless you can keep the light off of them.

My notion is that this is the reason there has been never been any push to implement 16 bit output as standard. It's doable today, but the precision really wouldn't offer much advantage it might help at the extreme low end, if not too dark for our monitors. And 16 bits has so many more possible values vs , so lossless 16 bit compression is much less effective.

Our eyes can't distinguish many of the 8-bit steps that we do use, and we're doing fine with 8 bits. Even harder, our eyes and brain can do strange things to us. The brain is an active sensor that sometimes instead sees what it expects to see. Optical illusions are common. For example, in the RGB chart above, I'm sure I see the gray background lighten under the top line 0,0,0 black box. We can create data with bit color channels bit RGB color , but today, the extreme vast majority virtually all of our monitors, video cards and printers are 8-bit devices, meaning bit color.

We can create 16 bit images, but our 8-bit systems can only show 8 bits. Hollywood film makers use them for special effect graphics, to prevent banding in very wide gradients.