This workshop involved working close up with objects, learning the appropriate equations behind the calculations to then get a particular result in size ratio.
Due to faulty & unavailable equipment & time restriction after interruption of a fire drill we were only able to complete one of the set tasks being that of photographing a postage stamp at a scale of 1:1 life size.
Magnification Factor : m 1x or 1:1
Camera: Canon 5d
Sensor Size: 36 x 24mm
Lens Focal Length: 24 - 105mm (Zoomed to 50mm)
ISO Rating: 200
Extension tube: 50mm
Focal distance: v = v - f (1+1) 50 = 100
Bellows extension = v - f 100 - 50 = 50
Bellows extension factor
BF = (v/f)2 (100/50)2 = 4
= no. of stops increase 2 stops
Incident grey card reading: f8 @ 125th
Adjusted exposure: f4 @ 125th
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