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GSO Focal Reducer

A Focal Reducer is an optical element used to reduce focal length, increase lens speed, and in some instances improve optical transfer function (OTF) performance. Popular applications include photography, videography, and astrophotography. In astrophotography, these qualities are most desirable when taking pictures of nearby large objects, such as nebulae.

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GSO Focal Reducer

GSO 0.5x Focal Reducer 1.25"

GSO 0.5x Focal Reducer 2"

GSO 0.75x Focal Reducer 2"

F 6.3 Reducer Corrector Deceleration Lens

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