【Overview】 This is a self-made half rear soft filter for astrophotography (see photo 1). Based on the filters I've made so far, I've created a half filter. This filter is effective when you want to apply the filter only to the starry sky and not to the terrestrial scenery. 【Size and Material】 Size: 105mm x 100mm Thickness: 125μm (0.125mm) Material: PET (more rigid than polyester and less prone to scratches) 【Actual Shooting Examples】 Photos 2 and 3 are examples of actual shots taken with the half filter. The degree of bokeh will vary depending on the focal length of the lens, but you can see that the filter is applied only to the starry sky. 【How to Use】 This filter is used by attaching it to the rear side of the lens. Cut it with scissors, etc., and fix the sides with double-sided tape. It can be used in either direction, regardless of front or back. Refer to photo 4 for how to attach it to the lens. (If there is a mount on the rear side of the lens, insert it into the mount.) 【Compatibility】 You can easily understand the compatibility with filters sold by each manufacturer by referring to the table in photo 5. 【Shooting Equipment】 Camera: Canon EOS 6D Mark II Lens: Canon EF 16-35mm f/2.8L II USM Canon EF 14mm f/2.8L II USM Single shot Development software: Lightroom Classic 【Other】 I make these with the utmost care, but please refrain from purchasing if you are looking for a perfect product. Shipping will be via regular mail, so it may take about 5 days if it includes weekends and holidays. Thank you for your understanding.