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Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures). They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality.
This manual extension tube set comprises five parts:
1 x Camera Body Mount Adapter
1 x Lens Mount Adapter
1 x 9mm tube (Tube 1)
1 x 16mm tube (Tube 2)
1 x 30mm tube (Tube 3)
These are manual extension tubes - they contain no electrical contacts or circuitry. Focusing, exposure and aperture settings have to be adjusted manually.
PLEASE NOTE THE FOLLOWING:
When using extension tubes the lens will not focus to infinity. The focus range will be greatly limited to a very close focusing distance. There is light fall off when using any extension tube, sometimes the equivalent of 3 f-stops of light is lost when using multiple extension tubes together.
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