Showing posts with label black and white. Show all posts
Showing posts with label black and white. Show all posts

Thursday, May 27, 2010

Introduction to White Balance

White Balance is an aspect of photography that many digital camera owners don’t understand or use – but it’s something well worth learning about as it can have a real impact upon the shots you take.

So for those of you who have been avoiding White Balance – let me introduce you to it. I promise to keep it as simple as possible and keep what follows as useable as I can:

At its simplest – the reason we adjust white balance is to get the colors in your images as accurate as possible.

Why would you need to get the color right in your shots?

You might have noticed when examining shots after taking them that at times images can come out with an orange, blue, yellow etc look to them – despite the fact that to the naked eye the scene looked quite normal. The reason for this is that images different sources of light have a different ‘color’ (or temperature) to them. Fluorescent lighting adds a bluish cast to photos whereas tungsten (incandescent/bulbs) lights add a yellowish tinge to photos.

The range in different temperatures ranges from the very cool light of blue sky through to the very warm light of a candle.

We don’t generally notice this difference in temperature because our eyes adjust automatically for it. So unless the temperature of the light is very extreme a white sheet of paper will generally look white to us. However a digital camera doesn’t have the smarts to make these adjustments automatically and sometimes will need us to tell it how to treat different light.


So for cooler (blue or green) light you’ll tell the camera to warm things up and in warm light you’ll tell it to cool down.

Adjusting White Balance

Different digital cameras have different ways of adjusting white balance so ultimately you’ll need to get out your camera’s manual out to work out the specifics of how to make changes. Having said this – many digital cameras have automatic and semi-automatic modes to help you make the adjustments.

Preset White Balance Settings

Here are some of the basic White Balance settings you’ll find on cameras:

* Auto – this is where the camera makes a best guess on a shot by shot basis. You’ll find it works in many situations but it’s worth venturing out of it for trickier lighting.
* Tungsten – this mode is usually symbolized with a little bulb and is for shooting indoors, especially under tungsten (incandescent) lighting (such as bulb lighting). It generally cools down the colors in photos.
* Fluorescent – this compensates for the ‘cool’ light of fluorescent light and will warm up your shots.
* Daylight/Sunny – not all cameras have this setting because it sets things as fairly ‘normal’ white balance settings.
* Cloudy – this setting generally warms things up a touch more than ‘daylight’ mode.
* Flash – the flash of a camera can be quite a cool light so in Flash WB mode you’ll find it warms up your shots a touch.
* Shade – the light in shade is generally cooler (bluer) than shooting in direct sunlight so this mode will warm things up a little.

Manual White Balance Adjustments

In most cases you can get a pretty accurate result using the above preset white balance modes – but some digital cameras (most DSLRs and higher end point and shoots) allow for manual white balance adjustments also.

The way this is used varies a little between models but in essence what you do is to tell your camera what white looks like in a shot so that it has something as a reference point for deciding how other colors should look. You can do this by buying yourself a white (or grey) card which is specifically designed for this task – or you can find some other appropriately colored object around you to do the job.

Friday, May 21, 2010

Black and white photography tips.



With today’s digital technology, transforming colour images into black and white photographic prints is pretty straightforward but don’t throw away your rolls of black and white film.

Black and white photography is still regarded as a favourite with many photographers - dull landscape scenes become more dramatic with black and white photography.

Most subjects that are shot in colour can be taken with black and white film. Portraits are still widely taken by professional photographers all over the world.

One of the most popular uses of black and white photography is with wedding photographs. More couples are now opting for a combined wedding album of black and white images that really capture the mood and emotions of the special moment.

Black and white landscape photography is becoming popular again and is more suitable for taking images when the day is dull or too bright. If a scene does not have an entire spectrum of different colours, consider viewing it as a black and white photograph.

Do we need to learn black and white photography tips in a world of colour? You must choose the answer to this yourself - but here are a few pointers that will help you to make your decision.

1 Black and white photography is becoming more popular with the general public, and for that reason alone… new opportunities will open up for you.

2. In some situations, black and white photography has the tendency to make photos look more like works of art - fine art images will sell better in galleries.

3. Landscape images often lack a multitude of colours, using black and white film when shooting daytime photos will add impact to your photography.

4. There is also the value of using your own darkroom - the thrill of developing your own film and processing your images.

The same principles for colour photography apply to black and white photography. If you have mastered the art of photography, taking images with a roll of black and white film should be easy.

Filters are just as important with black and white photography. There are fewer filters available for black and white photography, but one that you should use is the polarizing filter. This filter is very effective for both black and white photography and colour photography. The polarizing filter makes the sky stand out to give your landscape images serious impact. It also helps to reduce glare from the sun’s rays - which is very handy for urban or architectural photography.

Exposure with black and white photography is a small bit easier. Black and white film handles light more easily than colour film can - which gives you greater room for error. Most black and white film allows you to capture detail when you underexpose at two stops. With overexposure the range is greater - between five and seven stops are allowed. This is known as film latitude. With colour film you are limited to a latitude of one stop each way.

This does not mean that you can become lethargic when taking black and white images. It means that if you do make a mistake the results may be acceptable.

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