• UPDATE



    The forum will be moving to a new domain in the near future (canonrumorsforum.com). I have turned off "read-only", but I will only leave the two forum nodes you see active for the time being.

    I don't know at this time how quickly the change will happen, but that will move at a good pace I am sure.

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Hi all,

Still converting my kit towards RF lenses and I have a question regarding Teleconverters. I understand how to use (and the issues with) the EF-RF converter with my EF TC 1.4x and an EF "big white" lens. But, as I move from EF to RF over time, I am thinking about RF TC's. Has anyone tried to stack as follows:
- EOS R5 (or any RF camera) with an RF TC followed by an RF to EF adapter then an EF lens?

I think a limitation of the RF TC's is that the glass extends so one cannot use it with all the RF lenses. But, if I someday have almost all RF glass, my EF TC's become useless and I would sell them to get RF TC's. Hope this makes sense. I am certainly no optics wizard and there might be an issue I am not aware of.

Thanks.