I use the wide conversion lens at a Galaxy Fame for "Cadrage Director's Viewfinder" - App
to the viewfinder area for wide-angle lenses adapt.
In MF6x7 and 50mm lens just one small line is up and down is not shown
and vignetting and distortion is a "seeker" portable.
My galaxy has such a solid rubber protective shell, in which I use the Conversion Lens * center * front of the lens
have used since you "be bracketed intentions" but moves fast times by mistake.
I liked this adapter kit helped for my application, but
Macro and Wide were hard to screw apart when delivered something
Therefore, there is only 4.5 stars.