image 3rd from top... focuses direct sunlight (light, heat and everything else which makes up direct sunlight, which can be refracted) to a point... hence the concentration of heat and the burning medium
image 4th from top... focuses reflected light onto a 'medium" - heat (and some other components of direct sunlight) is not part of that makeup. hence the image is captured (and it isn't focused to a point in photography)
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Stand alone Collector's Edition
DCS Series
Even duct tape can't fix stupid... but it can muffle the sound.
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