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Neutral density filtering is a necessity for all of us involved in video making for reasons well known. However, it is also a very popular trick among landscape photographers, particularly when water of all kinds is in the frame. This is not our field anyway since they're using tripods and minutes long exposures. For aerial photography one of the most promising techniques employs so called grad filter, applying gradually weakening ND filtering from top of the frame where usually the light is the strongest. This will accentuate features of the sky without overexposing, leaving the landscape below properly exposed. Unfortunately all of the gazillions filter holding attachments on the market are designed for handheld DSLR cameras. Some manufacturers are offering circular grad filters, but the sizes available are well above our needs.
Here is my modification for Zenmuse X5 class camera, employing Olympus LH-48 lens hood and Hitech 67 resin grad filter. Naturally it can be used in conjunction with typical round ND or pola filter mounted behind. Custom balancing on the back of camera is required to avoid gimbal abuse, resulting in total 77 grams of extra payload.

Here is my modification for Zenmuse X5 class camera, employing Olympus LH-48 lens hood and Hitech 67 resin grad filter. Naturally it can be used in conjunction with typical round ND or pola filter mounted behind. Custom balancing on the back of camera is required to avoid gimbal abuse, resulting in total 77 grams of extra payload.
