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ALPA 产品类型
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ALPA HR Alpar 4.5/28 mm

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ALPA HR Alpar 4.5/28 mm
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罗敦司得/ALPA HR Alpar 4.5/28 mm

A lens of the first HR lens series. Some architectural photographers see it as an essential lens to their arsenal but only in combination with the ALPA aCam Lens Corrector. ALPA offers this Photoshop plug-in for free. This lens corrector is the only tool removing the complex distortion of this lens exact and reliable.

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ALPA 产品ID - PID
价格估算(瑞士法郎

技术细节

ALPAR HR 28
Focal Length: 28 mm
Effective: 28.77 mm
图像范围:70毫米
Image Angle: 101°
Aequivalent @ 33x44 = 22 mm Aequivalent @ 40x54 = 18 mm
最佳光圈范围:F5.6-F8.0
Focusing Range: ∞ – 0.30 m/ 1.0 ft
v/h @ 33 x 44: 11 mm / 9 mm
v/h @ 40 x 54: 2 mm / 2 mm
过滤器尺寸。M 72 x 0.75
中心过滤器。类型
镜片色调类型。B0 / B1