Water photography: blur movement like a pro for a classic effect

The latest post in our Shoot Like A Pro series on water photography explains how to blur movement in water using a long exposure for classic effects.

Light (or rather the lack of it) is the main reason that you see many pictures of water taken using long shutter speeds.

Many landscape photographers choose to shoot at dawn or dusk to make the most of the quality of the light, while lots of waterfalls are situated in shady, wooded landscapes.

All of this means that using a low ISO setting for the best quality and a small aperture for maximum depth of field means that using long shutter speeds is the only answer.

So, the blurring effect on the water is simply a by-product of the lighting conditions. This necessity for long shutter speeds has produced a whole photographic style though, with many photographers now using Neutral Density filters to achieve extremely long shutter speeds in bright light.

The amount of blur you will get depends on three main factors – how fast the water is moving, how much  of the frame the water takes up and the shutter speed that you choose.

The speed of the water is out of  your control, so you need to discover how your choice of viewpoint or lens and shutter speed will affect the appearance of the water in your image.

Controlling blur

The faster the movement of the water, the shorter the shutter speed you will need to produce a super-smooth surface. For a calm sea you’ll need to use a shutter speed of several seconds for a similar effect.

The smaller the water is in the frame, the less obvious the movement will be, so you’ll need longer shutter speeds to achieve the same amount of blur than if it takes up more space in the frame.

To completely blur the whole surface of the sea you’ll need to use shutter speeds of 20 seconds or more, which can be difficult to achieve in most lighting conditions. The answer is to use a strong 10-stop Neutral Density filter, such as the Lee Big Stopper.

PAGE 1: Controlling blur

PAGE 2: How to blur movement in camera

via Digital Camera World http://www.digitalcameraworld.com/2012/12/03/water-photography-blur-movement-like-a-pro-for-a-classic-effect/

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