But still, I have not regretted buying because the filters have helped me a few times, a picture exactly translate as I "saw" it did - when the sky blue felt something seems in reality. Or the sunset something golden. For the color filters are very good. The neutral density filter is doing what it should, I have a negative influence on colors or sharpness to date can not be determined.
However, I first had to play around for a while to develop feeling for handling the filters, so do not despair equal.
A downer but I've also found - therefore only 4 stars: Sometimes the filters tend to vignetting in the corners. I take pictures with a SIGMA DC 18-200. The effect is annoying, but that's just physics. And he's not really in advance to recognize the viewfinder.
I help me with a size picture, if I have to correct later with image editing. This makes the screen layout though not simple and at the wide-angle limit you lose then just something scene, but otherwise it does not bother me further.
Whoever the new filter anschafft to should perhaps consider a number to take greater and to work with adapters.
Since I do not know how I can upload photos here, here are two sample images via link:
Orange Filter: [...]
Blue Filter: [...]
Greetings, Diana