[Aluminum] It is a filter with the appropriate settings for use in both photos and videos, especially when the sunlight is not strong or the day is cloudy. Additionally, its internal use makes it convenient by eliminating the need to recalibrate a gimbal when removing or attaching it. It has a minimal impact on the white balance, which is very easy to correct. Highly convenient as with just one filter, I can use an infinite variety of lenses.

[5.3 x 5 x 1"] Infrared takes a hole lot of experimenting. If you convert a camera I would say make a Full Spectrum Conversion. After that a full set of filters to se your options. This filter is one of the most user friendly filters you can get for it. Have fun with it if you get it.

[0.225 lb] Best high quality filter for my infrared photography. Very happy with it.

[Dedicated] I love the colors; the filter snaps into the Canon adapter and fits snugly. The Vari ND wheel spins somewhat freely, similar to the canon version. I wish it had some more tension on the wheel so it would feel more solid. But in no way effects the performance, it's superior to the canon in my opinion.

[Aluminum] This filter case is made well and the magnetic latch is secure. I have not tried a drop test but I see no need to.

[Aluminum] I use a wide range of lenses, from cheap primes to large zooms, and my filter sizes vary across the range. With these clip-in filters, I can attach ND filters and shoot video with both RF and adapted EF lenses with no issues.

This 6 stop ND was perfect for shooting a music video outside in sunny Los Angeles, and the 1/8 Mist had just a hint of glow to highlights without killing the contrast. 

I own all three 1/8 mist (0-stop, 3-stop, and 6-stop), and I have one in my camera at all times. Looking to try the 1/4 mist at some point to compare.

[5.3 x 5 x 1"] Picked this up for use on my Canon R5C and I'm very impressed with the overall build quality. This is my first product by Kolari, but they have been on my radar for years with the Infrared conversions and magnetic filters they make. Happy to say this adapter and drop-in filters are very well built. The auto-focus features and communication with lens to camera has so far been perfect with my Sigma EF lenses, so I'm very pleased with that. The filters themselves are super clean and do not appear to have any color shifts or aberrations. And best of all, the control wheel for the VND is actually the right amount of resistance! Doesn't budge if you bump it (like the Canon brand one), but smoothly spins when you need to adjust it. At this price point, I'd recommend this kit over the Canon OEM alternative all day.

[5.3 x 5 x 1"] After long ago exploring IR images with Kodak chemical films, I purchased the Kolari K665Pro and K720Pro to use on a stock Canon EOS 5D Mark IV and Canon lenses. I chose the Kolari Pro series for their sharp cutoff spectra as well as their filter coatings compared to Kolari's base series or Hoya. The Kolari Pro quality / performance / price point trade-offs were great IMHO. Starting with the 665, I set the camera for manual exposure (typically bracketing around +2) and manual focus (typically longer focus settings), and the stock sensors pick up enough red for good composition and control. It has been a short learning curve and I am most pleased with the images that the Kolari filters are generating: awesome black and white landscapes, cloudscapes, and waterscapes, and excellent starting points for post-processed color shots (native red hue or channel swapped)! No discernible color aberration until I push the image magnification to its pixel limits. The coatings have been great with tough lighting angles - no flares - and stay remarkably clean in windy, dusty environments! Continuing experiments with the 720, which pushes the limits of the stock sensors but still works well. Highly recommend the Kolari 665Pro for anyone getting into IR!!!

[5.3 x 5 x 1"] I really like everything except I needed to order a larger size to fit a circular polaizer.

[5.3 x 5 x 1"] Works great on full spectrum cameras. Lets you get into the deep infrared on 720nm or higher converted cameras.