Have you been thinking about adding a CPL or ND filter to your kit? Why not check out the K&F CONCEPT Magnetic Filter Kit? I took it on a recent trip, and it was a fabulous addition; fast magnetic swaps, rich colours, glare control and dreamy long exposures. Read the full review for my real-world results. What do these filters do? Note: While K&F CONCEPT kindly sent me these filters for review, all thoughts and opinions here are entirely my own. K&F CONCEPT Magnetic Filter Kit — Technical specs & kit contents K&F CONCEPT Magnetic Filter Kit — In the field I went with the 72mm version, but while shooting with a wide-angle lens that had a 6 mm thread, I used a 67–72mm step-up ring. It worked well, but at the widest focal lengths, I noticed some vignette creeping into the corners. On my usual 72mm wide-angle, it fits perfectly and avoids that issue. The included adapter ring itself is quite thin, and I found it a little tricky to screw on and off — especially with stiff fingers or in cold weather. Once fitted, though, the magnetic system works beautifully and saves so much time in the field. This kit really shines in real-world shooting situations. It’s fantastic for high-contrast black & white photography, where the CPL in particular brings out striking differences between highlights and shadows. On bright sunny days, near or around water, the filters help tame reflections and prevent blown highlights. At the beach, the ND filters allowed me to experiment with long exposures, creating silky and smoky water effects, and I can already see how useful they’ll be for waterfalls and rivers. I ended up stacking the CPL and both ND filters for some great long exposures, or you can use them individually. The CPL also worked wonders in colour photography: it made my blue skies deeper, green grass richer, and added punch to cloudy skies, pulling out contrast that made images look far more dynamic. Whether I was shooting landscapes, seascapes, or even urban scenes with glass and reflective surfaces, the filters performed consistently well. Another handy trick is that you can stack the ND filters magnetically (e.g., ND8 + ND64 for 9 stops, or add the CPL for even more light reduction). This helps overcome the limited ND strength compared to an ND1000. The trade-off is that stacking increases the risk of vignetting, particularly on wide-angle lenses, but it’s still a practical workaround in many situations. They are great for beautiful high constrast B&W images too. Pros Cons