觀景窗要看幾個地方 ︰放大率、視野率跟DSLR的裁切率~
觀景窗大小正比於 放大率、視野率、裁切率
若傳統135mm底片為基準,一個簡單的計算方式--
放大率 x 視野率 x 裁切率 ---所得數字越大,表示觀景窗看到的越大..
SLR---
Nikon F6 : 0.74 x 1 x 1 = 0.74
Canon EOS 1V:0.72 x 1 x 1 = 0.72
DSLR---
Canon EOS 1Ds MKll:0.70 x 1 x 1 = 0.7
Canon EOS 5D:0.96 x 0.71 x 1 = 0.6816
Pentax *istD:0.95 x 0.95 x 1/1.5 = 0.602
Nikon D2X : 0.86 x 1 x 1/1.5 = 0.5733
Nikon D2H : 0.86 x 1 x 1/1.5 = 0.5733
Canon EOS 1D MK II:0.72 x 1 x 1/1.3 = 0.5539
Canon EOS 20D:0.95 x 0.9 x 1/1.6 = 0.5344
Olympus E-1 : 0.96 x 1 x 1/2 = 0.48
Nikon D70 : 0.75 x 0.95 x 1/1.5 = 0.475
Olympus E-300 : 0.94 x 1 x 1/2 = 0.47
Olympus E-500 : 0.95 x 0.95 x 1/2 = 0.4512
...............以此類推..
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