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Aperture Exercises

First exercise.  Was initially reluctant to do this, mainly because I thought it was a bit too basic a starting point.  Aperture and Depth of Field exercises?  But.  I’m here to learn.  Quite surprisingly, I found it a bit challenging, not because of the difficulty, or that seeing dof in action would blow me away, but because I wanted to use the exercise to think about a subject that would be a little different to demonstarte the effect.  I took a few sequences, since aborted, but it made me think, which I suppose was the entire point.  Work and rain got in the way, so sights were lowered to move on.  I decided on a roof line.

The dof images (1-3) clearly show a narrow band of focus that the wide aperture (f2.8) creates.  Visually, the far focus image is, to me, more appealing, with this subject matter.  Such a wide aperture also created a fast shutter speed (camera was set to Aperture Priority), and the few rain drops falling off the roof add a little atmosphere to the image.  May be a worthwhile exercise after all!  Gives me something to think about..

The next sequence of three (4-6) was to keep a single point of focus, but change the aperture, from wide to narrow…

The sequence shows the impact of a widening aperture, and how this creates a widening field of focus, that is, the area in front of, and behind, the point of focus is increasing in range, a wide aperture has a narrow band, a narrow aperture has a wide band.

Non of these (4-6) are particularly appealing.  I dont think the subject matter lends itself to a central point of focus here.  The above shot, in the fixed, wide aperture, sequence is most appealing (3).  A distant focal point, leading the eye to the point of attention.  I think aperture setting needs to be used to isolate an area of interest, or create a sense of depth, or lead the eye to a point.  In this sequence, a “front to back” clarity seems least appealing.

Categories: Exercises
Posted by lostolmos on October 21, 2012

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