This Blue Streak filter comes in a beautiful K&F Concept branded cardboard box (sealed in a plastic wrap). Inside the box is the filter, well protected in a handy protective case. A small cleaning cloth is also provided.

The 77mm diameter frame of the filter is well made and feels quite sturdy. It screwed my lenses and step-up rings on and off with no problems. It also rotates smoothly so you can change the angle of the flare effect to your liking.

The quality of the glass is also very good without any significant problems. Due to the thin frame, I didn't have any problems with vignetting either.

The Blue Streak filter effect is great for recreating the Anamorphic Flare effect. In this case, flare from a light source appears as a stretched horizontal line, rather than circular bokeh. With care, this can really add impact to your image and can also be used to give your image a different mood or atmosphere. It's a useful effects filter whether you're shooting, filming, or both.

In summary, this is a well-made filter for adding anamorphic flare effects to your photos and/or footage. While it may not quite live up to the standard of far more expensive filters, unless you're a professional filmmaker who needs the absolute best, it should be perfectly good enough for what you need.

Given the current interest in anamorphic lenses (and the effects they produce), it's nice to have a reasonably affordable option to recreate the most commonly desired effect (streaks of light) without buying and learning a complicated/cumbersome anamorphic setup need to use effectively, or spend a lot of money on one of the newer modern anamorphic lenses.

The build quality is good, perfectly functional and in line with what I would expect at this price point.

This filter is a very specific creative tool that I will use in very specific situations to achieve the desired effect. I won't be using it on most shoots, but being able to pull it out on the shoot I need it for will be a huge benefit.

This filter is a wonderful addition to my photography gear and has opened up a new world of visual storytelling for me. With the first twist of the 360-degree rotating frame, I could see the magic unfold. The anamorphic flare creates a dreamy, cinematic look that elevates my photos and videos beyond my expectations.
The 28-layer multi-resistant coating ensures consistent image quality in different lighting conditions without sacrificing color and detail. The aluminum alloy frame feels sturdy, and it was an effortless task to attach it to my 77mm lens.
Since incorporating this filter into my creative process, I have been inundated with compliments on my work. It was truly an eye-opening experience and I can't imagine going back to taking pictures without it.
In short, if you want to improve your photography and videography, this filter is an excellent addition. Don't hesitate to try it and see the difference for yourself.
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I've hardly had a chance to use it, but the build quality seems excellent.

The filter quality seems to be perfect. I'm used to that from K&F Concept. And you get a really nice blue streak effect. The problem, however, is that you get that with every single light source in your image, so you don't really have the ability to be selective. You have to compose your recording really carefully. The filter rotates smoothly, allowing you to change the direction of the stripes, but you'll still see them in any light source. I think in the end Photoshop is probably the better option to give you more control over such effects. Still, it's a worthwhile tool to have in your toolbox, especially given the cheap price for an FX filter.

It uses the same high quality optical glass as the other newer filters. The precision machining of the filter threads and ring is impressive and gives the feel of a much more expensive filter. So I can't fault any of the properties of the filter. It's just for the way I shoot, it probably won't be as useful as for some other types of photography.

Made by a great manufacturer who I have bought from many times in the past. This is my favorite camera accessories maker! This is the 77mm Blue Streak filter with HD optical glass. It fits the camera perfectly and has an aluminum frame that feels premium! Works very well and should last the life of the camera. No problems with the product and it arrived well packaged and ready to use. I would buy this again!

I love this filter! I use it for all product shots. It makes the image look a lot more cinematic, especially if you've set up the right lighting.

Really easy to use. Makes every shot look gorgeous and the rolloff is natural. Highly recommended, good value for money.

Cool effect for pictures. Make crazy creative photos

Used sparingly it gives some nice stripes and effects, it's good quality and works well. Honestly, it's nice to have instead of having, but I'm happy to have it in my pocket for sure.