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HR Macro105mm variations

Phase V

Member
Let´s see what we got here:
There is the original design for industrial use from Qioptiq:


Then we have the non-industrial version with Rodenstock-label, (it really is just a label, i was told Qioptiq pays a hefty price just for using the name Rodenstock):


Then we have the Alpa and now even a Sinar Incarnation:

So, i wonder if there is any really difference internal to this thing? I heard rumours that the Alpa version indeed does have some modifications (besides the snake-oil for lubrication of course) but that just rumours.
Anyone with hard data?
 
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