Call For Caution on "Shutter Shock" Posts

Started 8 months ago | Discussions thread
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Stuart
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Call For Caution on "Shutter Shock" Posts
8 months ago

There have been recent posts alleging varying degrees sharpness of photos with OMD-EM1 with differing shutter speeds. These findings have been attributed to "shutter shock" or similar phenomena. However, in at least some of these cases, the "tester" was keeping the exposure constant. Hence, the aperture varied. The result was comparing sharpness at, say f8 vs. f 3.5 and attributing the differences to "shutter shock". Recall that varying the aperature

1. Changes the depth of field, giving appearance of sharpness at smaller apertures

2. Changes the behavior of the lens. Many lenses have "sweet spots"- f8 being a common one.

Hand holding is also a poor way to evaluate this as the results will vary from shot to shot and would require inspection of many images to draw a firm conclusion.

Therefore, I make a plea to be cautious about blaming one variable for changes in sharpness when multiple variables are changed.

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