Hoya RM100

I needed a 25mm infrared filter for a specific project, and this 3mm thick Hoya RM100 fit perfectly into my lens adapter. The transmission is exactly what I was after for capturing those deep black foliage shots.

Snapped this Ø 25 mm filter into my astro camera's filter wheel and the IR-only shots came out cleaner than I expected. The 3mm substrate sits flat with zero wobble once threaded in. Pairing it with a luminance frame gave me the contrast I was chasing.

The 3mm thickness gives it a nice solid feel, and the 25mm diameter sits flush on my lens without any light leaks. Captures infrared exactly as expected.