The Slim-filter mainly suitable for lenses that go into the wide angle range. For other lenses, a normal (not slim) of the handling ago is of course better.
The filter effect is perfectly fine: both the gain of the sky-blue and the elimination of reflections such as lakes (the Azur-color of the water to emphasize) - it works correctly.
For personal use, I can fully recommend the filter.
That the filter in its effect would be weaker than much more expensive filters (like in other reviews criticized), I can not confirm. From the visual impression ago (photos of my daughter with this filter vs. my photos with the SLR and more expensive filter) I can not detect any noticeable difference.
So: buy recommendation. The filter is completely ok, and for a very reasonable price.
vg
H.Hellwig
