Tripod Mount Ring D For Canon EF 100mm F/2.8L Macro IS USM

LENS - An optical element which converges or diverges light

Canon - A Japanese company specialising in imaging and optical products

Camera - An electronic device used for taking photographs

Tripod - A three legged device for supporting an object - commonly a camera.

heavy - A concept of weight indicating an item may require some effort to lift or move

weight - A measure of the force applied on an object by gravity. Measured metric in grams and kilos or imperial in lbs and oz

100mm - the equivilent of 10cm

Weight - a measurement of how heavy an object appears due to the pull of gravity. For example the weight of an object on planet earth will be different to the weight of the object on the moon

Balance - Something that is evenly weighted to keep something upright.

Interior - The inside of something, usually what is not visible.

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