motion blur: The motion blur is achieved by reducing the speed of ' camera shutter (from 1 / 4 to 1 / 15 sec) to capture the movement. Key factors are the intention, commitment and composition.
Acceptable: | ||
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Immagine sfocata per mettere in risalto il movimento | | Sfocatura da luci composte |
Non accettabili: | ||
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Sfocature astratte | | |
Effetto soft focus:
Esempi di effetto soft focus: | ||
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Fotografie mosse: Al contrario di quelli brevi, i tempi di esposizione lunghi non consentono di fissare il moto del soggetto e durante lo scatto di una fotografia rendono la fotocamera more sensitive to movement (eg a hand just stops). A wider aperture (smaller number "F") or a number ASA / higher ISO (film speed) can reduce the exposure time. On the other hand, a larger aperture will lead to a greater depth of field (DOF) and a higher ISO number may result in the ginning of the image or the appearance of background noise. The best way to avoid camera shake is to use a tripod and a remote triggering device. If necessary, try to hold the camera with both hands or resting on a fixed surface. With digital cameras or even certain types of targets the photos can be moved.
Tips:
• To blur effects, never lose sight of the desired result and the commitment and priority to the composition
· The blur effects are rarely effective if they cover the entire image
· The blur must never compromise the quality
• To avoid camera shake, use a tripod and a remote triggering device
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