The Macro setting boosts color in smaller subjects, and Night Portrait balances ambient light with the flash.Ī Depth of Field Preview button on the front of the camera lets you view a scene through the viewfinder with the aperture stopped down, previewing the depth of field before actually capturing the image. Sunset handles the rich warm palettes of sunsets. Landscape produces sharp, colorful shots of outdoor scenery. Sports Action maximizes shutter speeds with Continuous Autofocus and Continuous Advance Drive modes. Portrait biases toward wider apertures to defocus the background while capturing warm, soft skin tones. Each optimizes the camera's exposure, white balance, and image processing systems for the particular program. The six Scene modes include Portrait, Landscape, Macro, Sports Action, Sunset, and Night Portrait. (I strongly recommend use of the optional wired remote in Bulb mode, as the pressure of your finger on the Shutter button is bound to jiggle the camera somewhat, blurring the image.) There doesn't appear to be any limit to the duration of Bulb exposures, but it appears that the dark-frame subtraction will only compensate for exposures up to 30 seconds long. Exposure time in Bulb mode is determined by how long you hold down the Shutter button. Switching to Manual mode gives you control over both shutter speed and aperture, with a Bulb setting available for longer exposures. In Shutter Priority mode, the user selects the shutter speed, from 1/4,000 to 30 seconds, while the camera chooses the best corresponding aperture setting. Aperture Priority mode lets you select the lens aperture setting, while the camera selects the most appropriate corresponding shutter speed. Thus, you can bias your exposure toward a faster shutter speed or greater depth of field as circumstances dictate. While in Program AE mode, you can rotate the control dial with or without holding the Exposure Compensation button to scroll through a range of equivalent exposure settings. Program AE mode keeps the camera in charge of the exposure,while you have control over all other exposure options. In straight Auto mode, the camera controls everything about the exposure, except for flash, zoom, and focus. The Exposure Mode dial on the top panel selects the main shooting mode, offering Manual, Shutter Priority, Aperture Priority, Program AE (Program Shift), Full Auto, and six Scene settings. The Sony A100 offers excellent exposure control, with fairly fine-grained adjustment of image attributes like sharpness, contrast, and color saturation, as well as extensive White Balance offerings.
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