![]() ![]() The ND filter is essentially a darkened piece of semi-opaque hard disc or square that acts like a pair of sunglasses on your lens to cut down the amount of light hitting your sensor. So for these cases, you can attach a filter on your lens called the Neutral Density (ND) filter. Other times, you may want to shoot with a more wide open aperture while still using a slow shutter speed. But in some cases, like a bright sunny day, you may not be able to close your aperture down enough to get a balanced exposure for a really slow shutter speed. In order to get a proper exposure, you will have to close down your aperture. ![]() When you slow down your shutter speed, you are also allowing more time for light to hit your sensor, which in turn increases the image exposure. Use Neutral Density (ND) filter when needed We have an excellent article that can help you improve the way you hold your camera. You want to also make sure that you are using the proper camera holding technique. One way to help minimize camera blur is to use your camera or lens’s image stabilization system. An example of this would be if you were to shoot 1/30th second shutter speed while using an 85mm prime lens. If you have to shoot handheld, however, the rule of thumb is that when you use a shutter speed number that is lower than your lens’ focal length number, you will start to introduce camera blur into the photo. Ideally, if you are shooting with a slow shutter speed, you want to secure your camera on either a tripod or on top of a stationary object like a table in order to keep your camera still. Minimize blur from camera shakeĪlthough you want to introduce motion blur with slow shutter speed, what you don’t want to have is camera blur caused by any movement of your camera. Luckily, with the advent of digital cameras and instant LCD review, all you have to do is take a look at the back of your screen and see if you need a longer or shorter shutter speed. Sometimes it will come down to trial and error when it comes to figuring out just how much shutter speed you will need for the amount of motion blur that you are looking for. Do you want just a little blur to imply movement or do you want a long abstract trail of motion or light trail? Showing just some motion blur can be achieved with as high of 1/100th second shutter speed for fast moving subjects like cars, while just showing the taillight trail may require 10 seconds shutter speed. Unlike freezing motion, there is a lot of range when it comes to showing motion in your image. General Guidelines for Shooting with Slow Shutter Speed How much blur? This is because the subject will be moving through a larger portion of your frame. Similarly, if you were to shoot that Ferris Wheel at 100 feet away with a 200mm lens, the Ferris Wheel will be more blurred compared to if you were to shoot it with a 35mm lens from the same distance. So if you capture the Ferris Wheel 10 feet away, it will look more blurry than if you were to take it 100 feet away. The closer the subject is to you, the more pronounced the motion is going to be. But if it is spinning slowly, you may need to slow your shutter speed down to 30 seconds to 1 minute in order to get the same look. If this Ferris Wheel is spinning fast, you may only need 5 seconds to achieve this look. Additionally, a subject that is moving side to side will also show more blur than a subject that is only moving towards or away from the camera. The faster the subject is moving, the more blur is created. The speed and direction of the moving subject affects how much of a motion blur will be created. Speed and direction of the moving subject These same factors also apply to how much blur shows up when you use a slow shutter speed. If you read the previous guide on Freezing Motion with High Shutter Speed, you may recall that there are several factors that affect how fast of a shutter speed you need to freeze motion. To help you achieve the most out of your slow shutter speed images, here are some guidelines that you can follow, as well as some common scenarios to use them in. The creative possibilities with using slow shutter speed are endless. Some examples that you may be familiar with include a speeding train passing by a train station or a trail of lights from the cars at night. Alternatively, you can create abstract motion and add a slow shutter speed surreal mood to your images. Adding motion to a still photography can turn a regular photo into one that is dynamic and full of energy. Each of these terms essentially means the same thing. Using slow shutter speed is also known as motion blur, long exposure, or shutter drag. Motion Blur and Slow Shutter Speed Tutorial
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