Mirror Lense Help

[CNCO]

What is the problem with using a mirror lenses? Is there a problem? I have noticed that they do produce good results but why are they not used as often? You can't go wrong for the price.

 

[Buckster]

Sub-par sharpness and ugly bokeh that consists of rings, especially rings of highlights.

Examples: Pebbles on Brighton Beach | Flickr - Photo Sharing!

Mirror Lens Bokeh | Flickr - Photo Sharing!

 

[jarhead2042]

i love mine...to a extent...cant beat the price and if u are careful u can get decent shots with one...but bokeh can be terrible and u need a good bit of light to get decent pictures...i think mine is a fixed aperture of like 6.3 but i use mine from nature to high school football..here are a couple pictures i have done with mine