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Canon EF Extension Tube v1 - 50mm

by martinmunk, published

Canon EF Extension Tube v1 - 50mm by martinmunk Apr 15, 2013
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11427Views 1843Downloads Found in Camera

Summary

This is a rev1 of my extension ring set for the Canon EF mount.

This part is designed to be printable without any support material. A well adjusted printer is necessary fo a tight fit.

Extension tubes are mainly used to reduce the focus distance of a lens for macro photo.

Better fit, locking, texture and electrical contacts are planned for later versions.

The sample photos are taken with a Canon 550D (T2i), a 70-200 F/4 USM and a total of 100mm extension (2x this part)

Please leave feedback, photos and the like in the comments! :)

Update:
Amplivibe did what i newer got around to do and remixed this to different lengths at http://www.thingiverse.com/thing:334254

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Dear martinmunk! Could you share (or send to me) Autodesk Inventor source of this thing? I would like to make electrical contacts for it.

Great design! Is it also possible to make a 25mm version? I want to try it on lenses with a smaller focal distance. On my Sigma 70-300 at 70mm the 100mm extension works great!

Sure, i actually did a 30mm version also but i have a newer, better design that i want to try in the printer before i publish it :)

should i print the actually version or du you plan o release the new design soon?
greetings smuk

I'm glad you ask!
I would recommend you print this one as i don't know when i will have a possibility to test the fit of the improvements i have made :)

great thing! What software did you use to create the design?

I used Autodesk Inventor 2013

Thanks, It works well. I used it with my Canon T3i

Very good, well done. What about a lens reversing adaptor as well?

That may be possible!
I am also going to make a mounting ring for my MR-14EX macro ring but i see the the fine pitch filter threading as a challange.

What diameters to and from would you be interested in, in a revers mounting adapter?

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