Yup, those are called convertable lenses. But the practice is to put the element to the rear, even if it's the front element, as it's best to have the aperture in front.
And watch out for focus...
Type: Posts; User: Mark Sawyer; Keyword(s):
Yup, those are called convertable lenses. But the practice is to put the element to the rear, even if it's the front element, as it's best to have the aperture in front.
And watch out for focus...