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Many Single-lens reflex cameras (SLR) feature multiple auto-focus factors within the viewfinder. Caution: Always verify for exceptions when using () Failing to check for exceptions if the camera is in use or doesn’t exist will trigger your utility to be shut down by the system. These cameras have a variety of movements allowing very shut management of focus and perspective.
Light entered a lens mounted on a lens board which was separated from the plate by an extendible bellows.There have been simple box cameras for glass plates but additionally single-lens reflex cameras with interchangeable lenses and even for shade images ( Autochrome Lumière ). Many of these cameras had controls to raise or decrease the lens and to tilt it forwards or backwards to manage perspective.
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