Flange 53mm P=0.75 for Photographic Lenses and Linhof lens bord
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Flange 53mm P=0.75 for Photographic Lenses and Linhof lens bord I have confirmed that the EBC Fujinon EX 135mm 1:5.6 and this flange (flange mount thread size 53mm P=0.75) can be combined correctly. The number and location of holes in this flange are the same as those of the flange that came with the Fujinon. The screw size is M2.5x10mm. I have a Linhof lens bord camera. So I also made a Linhof lens bord to fit this flange. According to the following web site, there are several other lenses that require the same flange. If my work is useful outside of Fujinon, please comment. https://redbook-jp.com/ Repro Nikkor 85mm F1.0 FR Nikkor 75mm F1.0 EL Nikkor 150mm F5.6 APO Nikkor 150mm F9 APO Nikkor 180mm F9 APO Nikkor 210mm F9 APO Nikkor 240mm F9 APO Nikkor 300mm F9 I customized (*2) the OpenSCAD script (*1) of the following work by Doranku using the OpenSCAD application and output STL (t2tot2extender.stl) for the screw part. https://www.thingiverse.com/thing:4428552 Then I fused my work “linhof_fujinon_ex_135_parts2_v1.stl” below with the STL of the screws using FreeCAD. (I am a novice when it comes to OpenSCAD. So I also used FreeCAD.) The same method should work for other standard flange, so give it a try. (*1) The OpenSCAD script contains the threads library by Dan Kirshner found at https://www.thingiverse.com/thing:1938150 Since this library is GPL, the aforementioned Doranku's work and mine are also GPL. (*2)Modified parts of "t2tot2extender.scad" ------- //length of the extender (mm) extenderlength=8; //outer diameter extender (mm) outerdiameter=56; //number of faces on outer diameter (increase outerdiameter for smaller than 10) faces=128; //inner diameter, T2==42 (mm) innerdiameter=53; //tolerance to inner diameter (mm) innertolerance=0.3; //pitch, T2=0.75 (mm per turn) innerpitch=0.75; -------
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