Ring Adapter for EF to RF lenses

[garyhile]

Is it mandatory to remove the adapter from R7 camera before removing lens from the adapter? 

This sounds silly, but the manual makes it sound that way. I carry my landscape lens with me and my Zoom on the camera while we are shooting. Carrying the landscape lens around my neck on a holder for canon lenses allows for a quick exchange. Hence, my question.

[Tronhard · Accepted solution]

Hi Gary and welcome:
No, it's not mandatory to remove the adapter if one is switching one EF lens for another and thus continuing to use the adapter.  What SHOULD if not MUST be done is to turn the camera off.   Opening up the body to the open air by taking off the lens, especially for a mirrorless camera, exposes the sensor to dust and, if the camera is turned on, the sensor is slightly electrostatically charged, thus it will attract dust that will appear on your images.   So, the process is: turn off the camera, point it lens down, remove 1st lens, attach 2nd lens, cap first lens and turn back on again.

[garyhile]

Thank you Trevor

[shadowsports]

Greetings,

The manual does state that the adapter should be mounted and removed from a lens when it is not mounted to a body.  Its been a couple of years, but I remember taking it out of the box and putting it on my body and testing it with a few lenses.  Then I read the instructions 😆 (Ooops)   I switched lenses (camera turned off) many times the first day before I read the instructions.  I didn't have any issues, but it was not what canon recommends.  I suspect its for communications.  So best practice is mount to the lens off the body.

***Edit - I had this reply going during the time Trevor replied.  Just going by what the manual states.  😉

mountadapter-ef-eosr-im-en.pdf (c-wss.com)

[Tronhard]

I do agree that the manual has said that, so no debate there, but I suspect this through an abundance if caution. For me, experience and common sense indicated that if the camera is off, and because we are looking at a simple set of contacts, I can see no logical reason why one should have to do that. 

Perhaps a Canon tech can explain their position on that.