Helicon Soft Forum

I would like to know, Can be used with Canon EF 70-200 mm f/4 L USM as a tube lens for microscope Infinite objectives, thank you in advance

The tube does not allow the lens focusing to the infinity, so this might be an issue for the microscope. You can check it by attaching a regular 12 mm macro extension tube - if you can focus ok with it, our tube will work fine as well.