5D Mark II Team

Improvements & Gear

Modding 5D Mark II – PL Mount (1)


  • Disassembling & Modding 5D Mark II – PL Mount
  • Pictures
  • Additional Comments & Part #2



Did you ever wonder what a Canon 5D Mark II looks like inside?

This article will show you some impressive images you would probably not ever see unless your camera is broken, or you get really mad after a “very bad day” and you attack your valuable camera with irrational fury 😉 (even in such case you wouldn’t see some of these amazing pictures that are part of a professional work).

This is the work of Patrick Tong, a skilled person who modified a 5D Mark II.

The purpose: to make it support PL mount lens.

The whole process of disassembling, modifying and reassembling took him one working day (really fast!!). The main goal was to remove the mirror and cut some parts on both sides of the mirror box to make it bigger.

After reading and watching these images you will probably ask: “Does the camera still work?”. The answer is Yes!

You will see the work was organized and professional. It is not recommended for any person who doesn’t really know what he/she is doing.

Our special thanks to Patrick Tong, who performed this impressive work and provided us these images to share with you.

Since there are too many images we’ll post them in two separated articles. Check additional comments at bottom.



One important comment made by Patrick: only 85mm/100mm/135mm cine lenses will work properly on the modified 5D Mark II (because the sensor is 36mm x 24mm ). Many wide angle cine lenses would show vignetting; e.g. 16/18/24/32/40/50mm. Of course you could use them, but you would need to “crop” the image.

Check our blog again in few days to see “Modding 5D Mark II – PL Mount – Part #2“. In the next article you will find even more detailed pictures and the final result.

June 8, 2010 - Posted by | Articles & Tech Info, Cameras, EOS 5D Mk II, REVIEWS, Special Info | , , , ,


  1. Do you think it would be possible to change the orientation of the sensor by 90 degrees? I mean by hacking the case apart inside. I can’t really tell what’s going on with all that branding on the photos!
    This would enable close positioning of two 5D2s for 3D work.

    Comment by Sim | June 15, 2010 | Reply

    • Interesting question…

      We forwarded it to Patrick Tong, who performed this amazing modding, to know his opinion.


      Comment by Admin | June 16, 2010 | Reply

  2. Hi Sim, It is not possible to change the position/orientation of the sensor.

    Comment by Patrick | June 18, 2010 | Reply

  3. […] of a EOS 5D Mark 2 part 1 and part 2 there are almost more screws in an EOS than total parts in an iPhone […]

    Pingback by Product Secrecy in the Camera Industry…To Apple it or not? | Points in Focus | June 24, 2010 | Reply

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