Depth of field in photography has a canon camera batteries unique application value, different picture of the depth of field has different artistic effect. In photography practice, according to the characteristics of the subjects and the performance of the photographer intention, through to the control effect of the depth of field, can affect the actual makes the picture properly, make the author's writing purpose get perfect performance.
Enhance photographic adaptiveness ultra in canon digital ixus 850 is battery expanding the focal length of the depth of field at the same time, in the actual application of which can improve the environment of low illumination of photographic adaptability.
In order to obtain the same size of the depth of field for the focal length focus in the use of the aperture can focus the infinite boundary than on a big two level, this is equivalent to improve the level GanGuangDu will two. For example, the canon digital ixus 750 battery focal length of 50 mm standard lens for, to get 4.5 meters to the infinite boundary depth of field range, the infinite boundary of the focus, must use the aperture of the us F16, and therefore to the focus, use the F8 aperture can.
The focal length of the the use of photography canon powershot sd750 battery provided two aspects of the convenient: one is to than the light conditions in dark two levels of conditions can still get correct exposure, and ensure the same depth of field, thus to low illumination shooting; 2 it is able to preview the same, light conditions in the same situation, make the shutter speed increased two gears, so as to facilitate the rapid moving body taken clear picture of, or to avoid handheld camera with the jitter and produce image fuzzy. In fact, the focal length is suitable for in a manual operation function of digital SLR cameras use in, and currently the most small digital camera mostly no manual function, and relies mainly on the automatic control operation, so it is difficult to apply these skills.
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