BTR GRADUAL ND filters have various density throughout filter space (soft transition from light to dark then medium transition from dark to light). It means that light incoming to camera is reducing gradually. This is very useful in situations where some of parts of the photography are overexposed (too much bright sky - especially on sunsets and sunrises). BTR is perfect for non-straight horizonts.BTR GRADUAL ND filters are able to use with full or gradual filters in stacking mode.
Workshop-High Tatras,Slovakia-Filip Hrebenda Photography
Workshop-Dolomity,Italy-Filip Hrebenda Photography
New filters - ZERO Black