[Glass] This filter is easy to put in and easy to remove. The mounting mechanism works really well and the all metal construction is very durable. The filter itself is high quality and works very well. Kolari customer service is also fantastic.

[Dedicated] Works great on full spectrum cameras. Lets you get into the deep infrared on 720nm or higher converted cameras.

[Glass] I’m new to IR photography. I’m using a Sony F828 with the magnet hack (Google it) & various external filters. I started with standard filters such as 720nm & 850nm but wanted something to pass more color for a more interesting twist. This 550nm delivers; it was worth the wait. It’s a lot of fun and making me enjoy photography again. There’s a lot of information out there about post-processing. Play with channel swapping (Photoshop channel mixer) to flex your creative muscles.

[Aluminum] Best high quality filter for my infrared photography!

[Aluminum] Great filter.

[Aluminum] 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!!!

[0.245 lb] I really like everything except I needed to order a larger size to fit a circular polaizer.

[0.245 lb] 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 Gen 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.

I posted a review of the 665 and can not say enough positives about it!!! 5 stars!!!

Still experimenting with the 720. It is slightly more technically challanging on a stock camera, but just as impressive as the 665 so far. Highly recommend the Kolari Pro Gen series for anyone getting into IR!!!

[Glass] I'm not sure how long rear filters have been around, but this is absolutly groundbreaking for astrophotography, as well as other purpose filters ie: Polarizer, Neutral Density, B&W, etc. So much easier, and cheaper, than purchasing numerous front filters and the smudges and dust they attract, not to mention the space those velcro filter holders take up in your gear bag. I'd rather have room for another lens (or two). Simply cover your lens with a UV/protection filter. Lastly, these rear filters are simple and easy to change out. I'll personally just use one camera for astrophotography and will buy a rear Polarizer filter for one of my other cameras for daylight shooting.

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