Why vented shades ?

[minoltist7]

Maybe silly question... why most shades for CV lenses have holes ?

 

[varjag]

So that they obstruct the viewfinder less.

 

[Pherdinand]

uit's for the wind. It's vented so the wind won't blow you away.

 

[minoltist7]

uit's for the wind. It's vented so the wind won't blow you away.

LOL! )))