I have a Canon 7D with various lenses. Now that the 7D has an EF-S lens mount, my question is whether I can simply use the old lenses or whether I need an adapter? And if so, I would very much like to know what the best one would be.
Thank you very much for your help!

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Answer

You can only use your EF-S lenses from the Canon 7D on the mirrorless camera with RF bayonet with an adapter. The Canon EF-EOS R bayonet adapter, which makes both EF and EF-S lenses compatible, is suitable for this. With this adapter, you can use your old lenses without any loss of quality, although the image circle of EF-S lenses will be correspondingly smaller as they are designed for APS-C sensors. A particularly recommended adapter is the Canon EF-EOS R bayonet adapter with control ring, which offers additional adjustment options.

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Question about Canon EOS R5 C

I have a Canon 7D with various lenses. Now that the 7D has an EF-S lens mount, my question is whether I can simply use the old lenses or whether I need an adapter? And if so, I would very much like to know what the best one would be. Thank you very much for your help!