The image above is not related to the title, I will come to it at the end.
One thing I wanted to observe in the previous post photos (min and max aperture) is that apart from the increase in sharpness, min aperture should give us a true, more real to our sight colors and contrast. WHY? Applying the same "light cone" concept, smaller the opening/aperture, narrower will be the light cone, which means lesser mixing of the light from adjacent cones when they are collected at the sensor. The increase in DOF when the aperture is closed is infact the result of the light cone getting narrower. Ideally if the aperture is a single point, there will be no cone at all, since the base of the cone is now a point! This means there will be only one ray (assuming light to be a ray for simplicity) from every point in space able to pass through this "point aperture" to be captured on the sensor. If the sensor is infinite in resolution, every point in space will be represented by a pixel on the sensor, which would give you a truely represented image/projection of the surrounding space. Practically since the pixels are of finite dimension the aperture need not be a single point and keeping the aperture at its minimum should give you a more real picture. We can clearly observe this difference in the below images at the central bottom portion of the clouds where the light and dark regions are clearly seen in the snap taken with min aperture than the one with max aperture. But again the factors for the failure of my experiment mentioned in my earlier post might be responsible for clearing this idea! So I will not conclude till some authentic and satisfactory experiments are made :(Good article on DOF: http://en.wikipedia.org/wiki/Depth_of_field
Also I have a few sample images from my multishot image merging software here: http://www.flickr.com/photos/57078108@N00/I will be launching it as soon as the GUI gets ready!
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