Hear I am in this filter by the odd expensive compared vs. conveniently in various photo forums. Since I was not sure if the ND3 (1000) fits in my photographic concept, I ordered this with the idea that he should not meet my expectations, I could still throw him in the bay. The filters in a rigid plastic and, after the first test shots and see view display was delivered I was shocked and amazed - once you know a distinct color cast into the Red or Brown of filters this strength, this was waiting on a extreme blue cast. After I set the white balance of the camera (Nikon D90) at a color temperature of 9090 Kelvin, resulted in daylight but a pleasant color neutrality. Minor color casts were in NEF (RAW) in Photoshop definitively eradicated. Next I could not detect any serious optical degradations, how to cope but expected by some "cheap filters".
My personal conclusion: Recommended - especially if you want to familiarize themselves with the matter of long exposures, without spending much money. In a direct comparison with existing (and more expensive) Filter (B + W, Tiffen) were observed for me no serious optical defects.
Therefore, 5 stars for the excellent price / performance ratio
