Photography Tutorials

How to Capture Amazing Long Exposure Photography

Long Exposure Photography Tutorial Redux

In this video tutorial we show you how to take long exposure photographs. If you have never seen long exposure photography before you are in for a treat and capturing these images brings new challenges and creative possibilities. Essentially what is happening is by increasing the exposure time we introduce movement into our image that would normally be frozen and it gives the picture added interest and a look that would not be seen by your own eyes.

This video focuses on capturing a long exposure landscape during the day but the principles are the same no matter how you use long exposure photography.

You will already understand the exposure triangle so when increasing exposure time we need to balance things by reducing ISO or making our aperture smaller to prevent the image being over exposed. However, in daylight conditions, even with ISO at 100 and aperture at say f/16, your shot could be over exposed before even one second has passed. To achieve the desired effect we want our exposure to be at least 30 seconds. The only way to do this is to use ND filters. These are filters added to the front of your lens that reduce the amount of light passing through the lens without severely affecting the colour. ND filters are rated by how many stops of light they reduce the exposure by. For example if you attach a 2 stop filter to your lens you will need to increase exposure in your camera by the same 2 stops to obtain a proper exposure.

Neutral Density Filters

In the tutorial we are using a 6 stop filter combined with a 10 stop filter to give a full 16 stops of light reduction which allows us to get some extremely long exposures of several minutes, even in bright daylight conditions.

Exposures of this length have a number of uses. It will reduce the roughest waters to a smooth tranquil scene and add lots of movement to even the slowest moving clouds. In city scenes it can also be used to remove people from your images. At night it can be used for star trail shots and create interesting and varied light painting images.  The resulting image will often have a fine art feel, especially when carefully converted to black and white.

Shutter Release Cable

In addition to the ND filter you will also need a shutter release cable allowing you to lock the shutter open when using the bulb mode. Keeping your camera very still is also essential so a good sturdy tripod is handy. If you don't have a tripod you could also place your camera down on a wall or some raised ground. A bean bag can be used to allow a small amount of adjustment or to keep things level on an uneven surface. When using a DSLR it is worth covering your viewfinder with some gaff tape or a viewfinder cap because light can creep in and ruin your image.

Once you are armed with this knowledge and the few tools you need; get out and take some pictures. It is an amazing motivation to go and see the world.

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Camera Filters - Do We Need Them on Our Lens?


The Truth About Camera Filters

In this video we take a look at various camera filters and whether you actually need them.

There are many kinds of filters in photography from those we put in front of our lens to software effects in Photoshop and filters on Instagram. They all in some way manipulate our images so accusations of 'cheating' from purists about filters added in post-production I find tiresome. Here we look at the most popular physical filters, talk about how they are used, whether they are needed and discuss any software alternatives.

UV Filters

These are probably the most common type of camera filters and screw to the front of your lens. They claim to block out UV light that can be detrimental to your image. The truth is they are a relic of the film era where film was susceptible to UV light and caused your image to appear hazy. Digital sensors on the other hand do not suffer this problem so the filter may only serve to worsen your image through a slight reduction in contrast. The main reason they are still used however is to protect the expensive piece of glass it is attached too. This is really a personal choice so if they bring you piece of mind, go ahead and use them.

Neutral Density Gradients (ND Grads)

It is possible that ND Grads and filter systems such as those from Lee and Cokin were designed purely to give landscape photographers a sense of superiority and smugness that would intimidate other photographers into never taking another landscape shot again. In reality they are used to balance the exposure between the sky and the rest of an image as the sky is generally much brighter than the ground. The difference is usually anywhere up to around 2 stops. There are hard gradient versions and soft gradient versions and which one you use will depend on how defined your horizon line is.

Whilst the effect these camera filters produce is essential in the majority of landscape photographs, the physical filters themselves are not. They are generally large, clunky and difficult to use along with being expensive. Although you can attach them to different lenses with an adapter, they do not scream versatility and ease of use. With the ever increasing dynamic range of modern cameras it is rendering ND grad filters pointless. The effect can be added very quickly in Lightroom bringing out all the detail of a bright sky or darkened foreground as a long as you shoot in RAW.

Neutral Density Filters

Neutral density camera filters are used to reduce the amount of light coming into the camera by allowing us to use a longer exposure time, or a wider aperture, where otherwise it would be over exposed. ND's are used in video to allow large apertures in very bright conditions to ensure you still get a nice blurred background for you shot.

With stills they allow us to use long exposures to smooth out water or show movement in the image.  They vary in strength and filters like the 10 stop 'big stopper' allow for some extreme long-exposure photography. There is currently no way to imitate the effects of these filters in software so they remain vital in many photographers camera bags.

See how to shoot long exposure landscape photography.

Circular Polarisers

Circular polarisers are used to darken and saturate skies and remove harsh glare from water. It does this using science that you can read about elsewhere but the intensity of the effect can be controlled by rotating the filter.

It is a pleasing effect that is not easily added in post-production so remains useful in certain conditions. If there is no blue sky and no reflections or glare then it will serve no purpose other than reducing your exposure by about 1 stop.

Many of these filters can be combined and screwed together to achieve several of the effects in one shot. Just be careful when using extremely wide angles though as the camera might 'see' the edge of the filters creating a very harsh vignette in your image.

Filters can be an expensive addition to you camera bag. Before buying, decide what type of effect you want to achieve and tailor your purchase to this. Personally I shoot a lot of long exposures so ND filters spend a lot of time on my camera. I use circular polarisers now and again and increasingly leave the ND grad system and UV filters at home.

Buy a Big Stopper now - Hoya 77 mm Pro ND 1000 Filter

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