Colour grading video in Lightroom

Screen-Shot-2015-05-26-at-1.47.07-am.png

Colour grading is a slow and tedious process. With the huge amount of software at our disposal, we can go spend hours and hours trying out various options and looks with the video before we can decide what look to finally go with. As described in our post here, there are quite a few stages to colour correct your footage and get it to the final look that you want. But what if you want to do some quick colour grading and are short of time and don't want to jump through all the hoops? Or what if you just want to quickly see a number of options before  you decide the final look of your video or film?

Adobe Lightroom tips

Enter Adobe Lightroom which is primarily a photo post-processing software but can come in very handy if you are in one of the situations described above and are looking at colour grading video in Lightroom. It is even better if you have one of your favourite looks saved as a "preset" in Lightroom. One click is all you need. Take a look at the video below to see how it is done and leave us a comment if you found this useful or have some questions.

http://youtu.be/ScLaTzbm_xk

Colour correction and colour grading in video

GMAX_STUDIOS-2713.jpg

To give a professional look to your shot footage, some amount of colour (color for Americans) correction and colour grading is important. Though quite a few people use both the terms, colour correction and colour grading interchangeably - they are in fact, two different processes altogether. So what is the difference between colour correction and colour grading in video, film or photography?

Flat image as captured before Colour correction and  colour grading

Image 1: Footage as captured. Flat and raw. Notice the low contrast and saturation.

Colour correction is the process by which you ensure that all the shots in your film or video have the right white balance, contrast and tone in every scene so that there is no major visual jump in between shots and scenes and they look like a part of the same production and not different shots assembled from different sources. The final outcome of the colour correction process is to often make the shot footage look as natural or real as possible - more so because more and more people and cameras shoot in a "flat" picture style which might not look very pleasing to the eye. In one sense, colour correction is an essential part of preparing your footage for colour grading.

GMAX_STUDIOS-2713-2

Image 2: Colour corrected footage. Nice punchy contrast and saturation.

 

Colour grading is applied after colour correction and is referred to the process of giving different colour tones and hues to your footage so that it creatively conveys the theme on which the film or video is based. It is largely a creative process where the creator of the piece decides that his film will look better with such a tonality. Colour grading is more about conveying a mood that suits the film and it involves manipulation of highlights, midtones and shadows to give the entire footage a different tone altogether.

GMAX_STUDIOS-colour grading

Image 3: Colour graded. Faded out the colours and diffused the highlights. Since this was a part of a scene where the protagonist is remembering his dead wife the grading helped  give the footage a dreamy feel.

 

Correction before grading is a nice way to remember the difference between the two and while on the subject, take a look at out video below that is perhaps the easiest, quickest and cheapest way to colour correct and grade your footage. Take a look and leave a comment if you have further questions. Also, please subscribe to our YouTube Channel by clicking here.

http://youtu.be/ScLaTzbm_xk

What is white balance in photography and how to master it?

WHITE-BALANCE-THUMBNAIL.jpg

What is white balance?

Most of the time, most of the people set their cameras to automatic white balance and forget about it and sure enough, for most of the people this seems to suffice and they get decent enough pictures to suit their purpose. This is due to the great advances in technology that we seem to have made over the past few years. If you want real control over the kind of pictures that you take, you have to stop relying on technology and what the camera asks you to do. To take pictures where the colour is finely controlled by you and nobody else you have to master some basic techniques. White balance is one of them.

White balance (WB) is the process of balancing the colour in your photographs, so that objects which appear white in person are also white in your photographs. Our eyes are very good at judging what is white under different lighting conditions - like the yellow light emitted from our bulbs at home or the white light emitted from the tube lights we use, but digital cameras often have difficulty in "seeing" under these lighting conditions. Even daylight for that matter changes its colour at different times of the day. You definitely must have noticed that sunlight has a warm glow in the morning and evening which is missing during the day. The sunlight appears quite bright, harsh and white during midday. To understand this better let us figure out what is the difference between warm, cool and neutral tones.

Understanding tones

 

WARM TONE IN A PHOTOGRAPH

Any photograph that has red or orange tones on it is said to be "warm". This is usually due do some warm light - like a bulb or the evening sunlight falling on the subject.

Warm tone in a photograph

 

COOL TONE IN A PHOTOGRAPH

If a photograph has a bluish tint to it, it is said to be "cool". This usually happens if you photograph subjects in shade, away from the sun or after sunset during the evening.

Cool tone in a photograph

NEUTRAL TONE IN A PHOTOGRAPH

If a photograph is neither warm nor cool, it is said to be neutral. An important point about neutral photographs is that the colours in it are true. They appear to exactly the way they are, in real life.

GMAX Studios-3438-3

Even with the camera set to auto white balance (or AWB) — your photographs can end up looking slightly blue, orange, or even green. Understanding white balance can help you avoid these unnatural tones and improve your photos under any lighting condition. Colour temperature is measured in Kelvin, denoted by a capital K.
Wikipedia defines colour temperature as:
The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of comparable hue to that of the light source. Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, manufacturing,astrophysics, horticulture, and other fields. In practice, color temperature is only meaningful for light sources that do in fact correspond somewhat closely to the radiation of some black body, i.e., those on a line from reddish/orange via yellow and more or less white to blueish white; it does not make sense to speak of the color temperature of, e.g., a green or a purple light. Color temperature is conventionally stated in the unit of absolute temperature, the Kelvin, having the unit symbol K.
So while this may sound confusing, photographically, the only two things that you need to remember are:
  • Most DSLRs have a colour temperature range of between 2500k and 10000K
  • In your camera, the lesser the number (closer to 2500K) the cooler your photograph will be and the larger the number (closer to 10000K), the warmer your photograph will be. Absolutely white light  is measured at 5600K.

Color balance graph

In my opinion, pure white light does not exist naturally. It can only be seen from man made light sources like professionally made HMI lights like they use on film sets or from flash(strobes) used in photography or LEDs. Natural light sources always have a tone to them.

 

How to set white balance on your camera?

There are three ways that you can set white balance on your camera.

  1. Auto white balance: As said earlier, auto white balance or AWB gets the job done 90% of the time and in the newer cameras it is pretty accurate or even amazing at times but with the camera set to auto white balance (or AWB) — your photographs can end up looking slightly blue, orange, or even green.
  2. Using the built-in settings: This involves figuring out what kind of light your are shooting under and matching it with the appropriate setting in the camera. So if you are shooting in sunlight, you choose the "sunlight" white balance setting on the camera (symbolised by a "sun") and if you are shooting in cloudy lighting conditions, then you use the cloudy settings and so on. This method too works well - but just barely. It is not very accurate and differs between camera brands and models.
  3. Using a custom white balance or preset white balance:  This is the most accurate method of making sure that you get an absolutely neutral photograph and true colours.White balance or  setting colour temperature is you telling the camera that under these lighting circumstances which colour it is to assume is “true white". Once you tell the camera that under these lighting circumstances, THIS is white- the camera is smart enough to make the necessary adjustments to render all other colours the way they are.The easiest way of doing this usually involves putting the camera in custom white balance mode and "showing" the camera a white sheet of paper and then taking a picture with it. What this does, is that it tells the camera that  - "this is white" under these lighting conditions. Once the camera understands that, it makes all the other adjustments accordingly and all your colours come out looking just the way they should.  You can use a device like Expodisc too, instead of the paper which will make the results more accurate.

If you shoot RAW, you can also, take your photographs to Adobe Lightroom or Photoshop and make corrections to the colour temperature in these programs. You can watch the video below to understand more about white balance and how to set it correctly. You can also read the articles (links under the video) on how to white your Nikon or Canon specifically.

Important

While understanding white balance can help you avoid these unnatural tones and improve your photos under any lighting condition. It is not a rule that you must have absolutely neutral tones for each and every photograph you take. You might prefer a warm or cool tone and that is perfectly alright. In fact, skin does look better in a slightly warm tone and many photographers deliberately "warm up" their photographs to make their subjects look better.

https://youtu.be/buex57O_Q5U

Also see:

How to  set custom white balance on Canon DSLRs

and

How to set preset white balance on Nikon DSLRs

 

Subscribe to GMax Studios YouTube channel

You can subscribe to our YouTube channel by clicking here. Please ask your questions in the comments section below and do share the pictures that you have shot after reading this article and tell us whether it helped you. It would be great to hear from you.
 Please share this article with your friends if you found it helpful.

What is ISO in photography?

GMax_Studios-0173.jpg

What is ISO in photography? In times when people used film cameras to take photographs, ISO sensitivity expressed the speed of photographic negative materials and it used to be expressed as ASA. But now, since digital cameras do not use film but use image sensors instead, the ISO equivalent is usually used.

What ISO denotes is how sensitive the image sensor is to the amount of light present. The higher the ISO, the more sensitive the image sensor is to the available light. So if you are shooting in low light conditions, you need to increase the ISO. Most cameras have 100 ISO as their lowest setting.

When people used film, they usually had to change the roll of film to change their ISO. It was not uncommon for people to carry two different cameras with two different rolls of film - each with a different ISO in order to shoot under different situations. The lower ISO 100 film would be used for shooting in daylight and the higher ISO, 400 and above would be used to capture night scenes.

Now you just need to change your  ISO within your camera from a lower to higher setting to be able to take night shots.

Caution

Having this great feature in your camera can be quite powerful but be careful, shooting at high ISO can cause noise to appear in your photographs. This can be seen in the photographs below.

ISO in photography

ISO in photography

The above image was shot at ISO 100 and as you can see there is hardly or no noise. The image below was shot at ISO 3200 to illustrate how noise can appear at higher ISO settings. Each camera has it's own noise threshold, so make sure you test your own camera before you increase the ISO levels.

What is ISO in photography

What is ISO in photography

Watch this video to understand more about ISO and please remember to subscribe to our channel by clicking here.

 Please share this post with your friends if you found it helpful.

Understanding aperture in photography

Understanding aperture in photography

Imagine in your mind, how the camera works. For you to make a good photograph, a certain amount of light needs to hit the sensor. Let us assume this amount of light to be hundred units. If the light hitting the sensor lesser than the amount of light required, the photographs will be dark or “underexposed”. Similarly, if the amount of light hitting the sensor is more than the amount of light required, the picture will be over-bright or “overexposed”.

There are two ways of controlling the amount of light hitting the sensor-via the aperture or with the shutter speed.

What is aperture?

The aperture is nothing but the hole in the lens through which the light enters the camera. For the time being, all you need to know about the aperture is that smaller the number [1.4 or 1.8], the bigger the aperture and similarly, the larger the number will [16 or 22], the smaller the aperture or the size of the hole on the lens.

Understanding aperture in photography

Understanding aperture in photography

All these numbers are often referred to by using the alphabet F in front of them. So 1.4 is referred to as F1 .4 and 16 is referenced to as F-16. This is just another way of trying to sound cool. There is actually no difference if you say 16 or F-16.

Understanding aperture in photography - Aperture closed down

Understanding aperture in photography - Aperture closed down

Just remember, the smaller the number-the bigger the whole AND the bigger the number, the smaller the hole. This is all that you need to remember about the aperture. This will become second nature as time goes by but it is crucial that for the time being, you remembered this!!!

Understanding aperture in photography - Full open aperture

Understanding aperture in photography - Full open aperture

The size of the aperture is measured in f-stops, which control the depth of field. With few exceptions, each f-stop lets in half as much light as the next larger opening and twice as much light as the next smaller one. From the largest opening to smallest, standard f-stops are as follows: f/1, f/1.4, f/2, f/2.8, f/4, f/5.6, f/8, f/11, f/16, f/22, f/32 and f/45. This can be a little confusing because the larger the f-stop, the smaller the amount of light that is let into the camera. The easiest way to think off-stops is in terms of fractions: just as '/i6 is less than l/s, an f-stop of f/16 is smaller than, and lets in less light than, f/8.

You won't find the full range of settings on any one lens. In most cases, the standard lens on a digital camera is in the f/3.5—f/16 range.

The maximum aperture of a lens determines by how much it can be opened. The maximum aperture is also referred to as the maximum iris, or the speed of a lens. Although lenses are referred to by their focal length, the description of a lens also carries a second number, such as 2.0 or 3.5, which indicates the maximum aperture of the lens. Larger maximum apertures, such as f/1.8, let in more light than smaller apertures, such as f/3.2, allowing you to take better shots in low-light situations.

Watch the video below to understand aperture better.

 Also read: How aperture affects your photograph  - Depth of field

Subscribe to GMax Studios YouTube channel

Subscribe to GMax Studios YouTube channel

Please share this post with your friends if you found this useful.

 Learn photography by reading: The Ultimate Photography Guide for Beginners

How is a photograph made

DSC9326.jpg

How is a photograph made?

When taking a picture, you press the shutter release and there are two things that happen:

  1. The shutter opens for a fraction of time to let light from the scene to be focused onto the image sensor. The fraction of time for which the shutter opens is called shutter speed.
  2. The light coming in comes through a hole in the lens. This hole is called an aperture - an adjustable opening that regulates how much light passes through the lens.

So, to get the ideal exposure, just the right amount of light must strike the image sensor. If there is too much light - your picture will be overexposed and if there or too little light, your picture will underexposed. In either case you need to adjust the amount of light coming into the camera. So we can do this one of two ways:

  1. Change the shutter speed. Make the shutter speed slower (so that it remains open for a longer time) to allow more light to come in OR make the shutter speed faster to let less light come in  - depending upon whether the photograph is under or overrexposed.
  2. Another way to change the amount of light coming into the camera  is by opening or closing the lens's aperture. 'Stopping down' the aperture makes it smaller so that it lets in less light. Opening it up lets in more light.

http://youtu.be/vZ-_zMSqnKk

Once the right amount of light hits the sensor or film - you will have the perfectly exposed picture.

How is a photograph made

Please subscribe to our channel if you like the video by clicking here or click on the image below to watch all our episodes on photography.

Watch all GMax Studios Episodes

Also please don't forget to leave us a comment if you have a question or would like to leave a request as to which video would you like to see next.