When To Use Bulb B Mode

Trick Photography And Special Effects

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FIGURE 3.18

A long shutter speed was necessary to capture several bursts of fireworks on one image.

FIGURE 3.19

I left the shutter open for several seconds to catch the trail of lights created by the Ferris wheel as it was spinning.

FIGURE 3.19

I left the shutter open for several seconds to catch the trail of lights created by the Ferris wheel as it was spinning.

Long Exposure Ferris Wheel

18-50mm lens

ISO 100 51 sec. f/22

18-50mm l

FIGURE 3.20

A very long exposure was required to photograph this skyline scene at night.

Canon Bulb Exposure

FIGURE 3.21

Although this image was photographed on 35mm film, it's a good example of the types of images you can create digitally using the Bulb mode on your 7D.

FIGURE 3.21

Although this image was photographed on 35mm film, it's a good example of the types of images you can create digitally using the Bulb mode on your 7D.

SETTING UP AND SHOOTING IN BULB MODE

1. Set your camera on a sturdy tripod and attach a cable release to the Remote Control terminal on the side of your camera.

2. Turn the Mode dial to align the B with the indicator line.

3. Select your aperture by turning the Main dial.

4. Select your ISO by pressing the ISO button on the top of the camera and then turning the Main dial (the ISO selection will appear in the top LCD Panel).

5. Position the camera toward your subject and press the button on the cable release. Hold the button down until you are satisfied with your exposure, and then release the shutter.

6. If you want an extremely long exposure (several minutes or hours), lock the cable release by sliding the button up, which will allow you to lock the shutter in place indefinitely. The only limitation to your exposure is the amount of life left in your battery.

C1, C2, AND C3: CUSTOM MODES

The Canon 7D comes with three custom modes: C1, C2, and C3. These modes allow the photographer to program specific shooting modes or exposure settings and save them as a preset. They are extremely useful if you find yourself photographing the same scene again and again and always using the same settings each time. To learn more about them, please turn to Chapter 10.

DIGITAL NOISE AND LONG EXPOSURES

One issue that arises when making extremely long exposures is that you are likely to introduce more digital noise into your images than with a normal exposure. This is one area in which film still has an advantage over digital (Figure 3.22). Digital noise due to long exposures is difficult to prevent, but there are some advanced ways to reduce its effect by using noise-reduction software while editing your images. You can also reduce the amount of noise in-camera by turning on the Long Exposure Noise Reduction setting in your 7D. Please turn to Chapter 7 for more information.

Long Exposure

FIGURE 3.22

Long exposures photographed with film, such as this image of fireworks at night, had a high dynamic range (more detail in the darker and brighter areas) and, unlike the digital cameras of today, did not introduce excess noise or grain in the images.

FIGURE 3.22

Long exposures photographed with film, such as this image of fireworks at night, had a high dynamic range (more detail in the darker and brighter areas) and, unlike the digital cameras of today, did not introduce excess noise or grain in the images.

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  • Facino
    How to use bulb on canon7d?
    8 years ago
  • luisa trentino
    How to figure speed while doing long exposures on canon 7d?
    8 years ago
  • prisca
    How to set fireworks 7d canon?
    8 years ago
  • Max
    How to use bulb mode on a canon 7d?
    8 years ago
  • Elizabeth
    How to get on bulb setting on 7d?
    8 years ago
  • sarah barth
    Can i use the cannon 7d for panoramic photos?
    8 years ago
  • omar
    Where is the bulb setting on canon 7d?
    8 years ago
  • veijo
    How to reduce over exposure in cannon 7d?
    8 years ago
  • sigismond
    How to take long exposure photos of water using canon 7d?
    8 years ago
  • Leanna
    What white balance setting to use on a canon 7d in bulb setting?
    8 years ago
  • Ciriaco
    How to using bulb in canon 7d without cable release?
    8 years ago

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