18% Gray Card Set 8X6" 6X4" for White balance exposure

Discussion in 'Linkdelight Photography Accessories' started by Link Delight Online Shop, Sep 14, 2010.

  1. Link Delight Online Shop

    Link Delight Online Shop Official Vendor Supporting Vendor

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    If we set the reflection ratio to 100% (as maximum) and decrease progressively as common ratio of 2, we'll get the density value of full-level diaphragm: 100, 50, 25, 12.5, 6.25, 3.125…… if the reflection ratio decrease progressively as square root of 2, we'll get the density value of half-level diaphragm: 100, 70.71, 50.35, 36.25, 17.68, 12.5, 8.84, 6.25, 4.42, 3.125…… Actually those values are just different grey values in different grades. We take it that the standard exposure value is 17.68, then those values beside it will be its exposure latitude.

    the price: $7.99

    more details:
    18% Gray Card Set 8X6" 6X4" for White balance exposure

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    Nikon d3100 battery grip, LP-E5, LP-E6, LP-E8,BP-511A, CP-E4,NB-2LH, EN-EL3E, EN-EL9, EN-EL3A, SD-8A, MK-MH21, NP-FW50, FA-EB1AM, NP-FM500H, D-Li90, NP-400, D-Li90, SLB-1674, nikon d3100 remote shutter release , canon 550d battery grip , nikon d5000 battery grip, canon 7d battery grip, canon 60d battery grip, bge6, gigtube wireless , fotopro tripod , triopo, redhead halogen light
     
    Last edited: Apr 18, 2011

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