Originally Posted by
memorris
In many cases you can increase your DOF with movements. The methods I was taught require a way to accurately measure the position of the standard you use to focus. Then focus on the nearest thing you want in sharp focus and take note of where the standard is. Then focus on the farthest point you want in sharp focus and look at that measurement. The difference of the 2, in mm multiplied by 5 will give you your widest aperture to have all of that in focus. Then you move the standard to 1/2 way between the 2 extremes and stop down. This method gives you precise control over DOF.
To use movements it depends whether your front standard has tilt ad swing. Using tilt or swing you change the focal plane in order to reduce the aperture to achieve the desired DOF. If your camera has axial tilt (tilts around a point near the center of the lend board) then you focus on the nearest object then tilt until the farthest object is in focus. Then go back to the near and do it al over again until both are in focus. Then check the measurement as in the near-far method and find the most out of focus object in the glass and focus on it. Taking the difference as before and multiply by 5 you have the minimum aperture setting.
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