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Relative brightnessSWPP Photographic Glossary

Tuesday 27th October 2020  




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Relative brightness

Indicates how good binoculars are in low light. To find this divide the objective lens by the magnification and square the result. A 10x40 has a relative brightness of 16 (40/10= 4, 4x4=16). A higher number means the binoculars will be better in low light situations.



 

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06/11/2019 11:36:16