Lens switching to manual focus when recording

[abb678]

I'm using canon 100mm lens and I have the camera on auto focus but when I attach the macro lens it automatically switches to manual focus? Does anyone know why it's doing that? I have a 50mm and this doesn't happen so I think it's an issue with the 100mm. The problem only happens in video mode. It will stay in autofocus mode when taking pictures. 

[ebiggs1]

What are the exact two lenses you have?  They are both Canon brand? If they are not, that is the problem. Use Canon brand lenses.

[abb678]

I have a Sony camera body and the other lens (50mm) is Sony as well. I have an adapter for the Canon 100mm lens though.

[Waddizzle]

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@abb678 wrote:
I have a Sony camera body and the other lens (50mm) is Sony as well. I have an adapter for the Canon 100mm lens though.

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Solutions for issues with Sony camera bodies are rare in a Canon forum.  I suggest that you ask Sony about it.  

[kvbarkley]

I would guess your adapter is dodgy, telling the camera that it is a manual focus lens. Which, unless it was a *very* expensive adapter, is probably all it can do.

[ebiggs1]

"I suggest that you ask Sony about it."

Agree, you are on the wrong forum. Canon isn't going to help using a Sony camera even though you are using a Canon lens. There is a reason why people and manufacturers make adapters for Canon lenses. They are the best and biggest line in the world.

Sorry we are of little help. Good luck.