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Macro Getting really close

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Old 4 Weeks Ago
Harold Gough Harold Gough is offline
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Calibration of Printing Nikkor 150mm On EM-1

I did this with my lens.

Calibrated at f2.8 (M42 Setup)

Extension mm WD mm(No hood) FOV mm Mag*
145 390 36 0.5
225 210 17 1
340 155 10 1.7
385 150 8 2

With Helicoids**:

One only fitted and closed 35 0.5
open 21 0.8
Two fitted and both closed 23 0.74
distal open 17 1
both open # 12 1.5
# Plus 50mm ext tube 10 1.7

WD = working distance

* x2 with crop factor

** Each ca 35 to 90mm

Harold
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