| 摘要 |
PURPOSE:To always realize a photographing at any case with an exposure amount near a prescribed level by alternating a shift frame a prescribed exposure level to overexposure and a shift to an underexposure sides at every frame and divergently increasing the shifting amount. CONSTITUTION:While alternating the shift from the prescribed exposure level to the overexposure and the shift to the underexposure sides at every frame by a bracket function and the shifting amount is divergently increased. Consequently, even when bracket photographing is finished in the midest of a set number of pictures, pictures at exposure amounts near the prescribed level can be surely obtained. Moreover, pictures with overexposure and underexposure can be alternately obtained. Therefore, photographing by shifting in both directions, i.e., the overexposure and underexposure sides, can be evaluated. Thus, photographing can be always carried out at exposure amounts near a prescribed level at any case. |
