A strong aftershock with a magnitude of 5.7 occurred on June 14, 2010 at 9 : 26 : 58 PM PDT, with an epicenter near Imperial County and a focal depth of 5.0 km.
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:: : The focal depth has been recalculated to 6 km, so not that shallow-I should have linked to our article on induced seismicity . talk ) 07 : 07, 24 August 2011 ( UTC)
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"' Focus stacking "'is a digital image processing technique which combines the in-focus portions of multiple exposures to give a resulting image with a greater proportion in microfossil in diatomaceous earth at three focal depths.
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As with all wave phenomena in physics, there is uncertainty in such measurements that grows with the wavelength so the focal depth of the source of these long-wavelength ( low frequency ) waves is difficult to determine exactly.
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For example, the 2001 Nisqually shock occurred nearly deep and was followed by only four small aftershocks, and there was a similar procession for the 1946 Vancouver Island earthquake, a M7.6 crustal shock that also had a focal depth near.
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You will only get to see things like the aperture value and the shutter length ( which affect the lighting, the sharpness, and the focal depth of the picture ), the exposure compensation, and the white balance setting, after you take the photograph.
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Perhaps I did go a little too far with the sharpening, but I must say that I was quite pleased with my blurring of the background . ( I was trying to reduce the apparent focal depth, and hide the jaggies in the background . ) " Just because someone makes a request, that doesn't mean it's a good idea ."
