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Is it possible to change ISO level of photos shot from DSLR from ISO100 to ISO400?
Will changing the ISO level affect the aperture and shutter speed settings?
Yes, changing the ISO level can affect the camera's aperture and shutter speed settings. When you increase the ISO level, the camera may use a faster shutter speed and/or a wider aperture to compensate for the increased light sensitivity. Similarly, decreasing the ISO level may result in a slower shutter speed and/or a narrower aperture to compensate for the decreased light sensitivity.