Helicon fb tube
Helicon fb tube
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
- Stas Yatsenko
- Posts: 3841
- Joined: 06.05.2009 14:05
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Re: Helicon fb tube
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.