Effects of Various Exposure Lengths on Macro Photography
Various exposure lengths have more of an effect on macro photography than other types of pictures. Because everything is microscopic, several trends can happen as you change your shutter speed. Though there are many reasons to compensate for the iris with a slow shutter speed, there are also disadvantages to account for.
Long exposure times always have more motion blur than short exposure times. This can be due to the movement of objects in the frame or the photographers lack of stability. If you are shooting in the field, try your best to keep the shutter speed fast in order to get as crisp an image as possible. This may interfere with a desire for greater depth of field through aperture choice, but a balance can be found. If you're shooting in a studio with static objects, use a tripod and a remote shutter release to minimize camera shake.
The exposure time also alters the photo's response to ambient light. When you use a flash and a slow shutter speed, you may notice a slight tint to the shadows in your photo. The longer exposure time records more light in these areas than a short exposure time. With a fast speed, the contrast will increase and the power of the flash will eliminate the glow.
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