Worked well for me! First 4 shots with the filter. The last shot was a different camera/lens.
25/09/2025
After using this filter on my Nikon Coolpix P950 to capture the eclipse this past Monday, I'd have paid double for it. Some reviews mention 20-stops being too dark, but I didn’t notice that even with cloud coverage over the eclipse; the photos I've attached speak for themself. While I wasn’t the path of totality, I got about 90-95% of coverage. I also experimented with my white balance to turn the sun different colors.
21/09/2025
I ordered this filter specifically for the solar eclipse. We were lucky enough to have the full eclipse.
I started taking photos at around 1:10 PM EST. The totality occurred just past 3 PM.
I started taking photos at around 1:10 PM EST. The totality occurred just past 3 PM.
18/09/2025
This quality of filter you are getting for the price is very good.
I was not expecting as much resolution.
I am not sure why some reviews say it is too dark. It is just fine. I used a Nikon D850, Tamron 150-600mm Lens. The photo was taken at f10, ISO 400,1/160 sec, 600MM. I used f10 because the lens is not very sharp at 600mm, and therefore higher ISO. Otherwise, I could have used ISO 64 for 100% noise-free.
I was not expecting as much resolution.
I am not sure why some reviews say it is too dark. It is just fine. I used a Nikon D850, Tamron 150-600mm Lens. The photo was taken at f10, ISO 400,1/160 sec, 600MM. I used f10 because the lens is not very sharp at 600mm, and therefore higher ISO. Otherwise, I could have used ISO 64 for 100% noise-free.
14/09/2025
I don't have a lot of use-cases for this filter, but it's good to have one of these when the need arises. I took some test shots with a kit lens on a Sony A7RIV. See the attached photos of the weather vane. The first shot is with the filter (70mm, f4, ISO2000, 30 sec); the second is without (70mm, f4, ISO100, 1/2500). It provides a nice blur of the slow-moving clouds in the bright conditions with the sun just out of frame. For the price, this filter definitely works for very occasional use.
13/09/2025
K&F has always exceeded my expectations and seeing that they've come up with a 20 f-stop density filter is pretty amazing. This is more of a one-off filter to help cut out the harsh sources of light such as pointing your camera directly at the sun or trying to capture astronomy photos. The lens itself is very durable and you can see this instantly just from the quality of the packaging and materials.
I've always kept a filter on hand to protect my expensive camera lenses but this again is another ND styled lens for a specific use case. I've been trying it out on a variety of projects and have been thrilled overall!
I've always kept a filter on hand to protect my expensive camera lenses but this again is another ND styled lens for a specific use case. I've been trying it out on a variety of projects and have been thrilled overall!
09/09/2025
Bought this for the upcoming solar eclipse. This filter came in a nice protective case and the overall quality of the filter is great. No problem with threading it onto a 70-200 Canon 2.8 lens and the cover snaps right on.
Now this is a really dark filter. In fact unless you have a full on view of the sun without any obstructions you won’t be able to get a bright photo unless you are using a higher than 100 iso, low shutter speeds, or high aperture rates. Ideally you want to shoot F5 or F8 at 100 iso and 1/100+ shutter speeds but it’s quite dark at that setting. I did end up buying the cheaper 16.6 ND but it hasn’t come in yet. I would say that’s the better filter to go to so you can use higher shutter speeds or lower isos. Attached is an unedited photo along with a slightly edited version. This was on a clear day at high noon. With a little editing it was great but it’s still a bit darker than I wanted. If you can, get the 16.6 nd instead.
Now this is a really dark filter. In fact unless you have a full on view of the sun without any obstructions you won’t be able to get a bright photo unless you are using a higher than 100 iso, low shutter speeds, or high aperture rates. Ideally you want to shoot F5 or F8 at 100 iso and 1/100+ shutter speeds but it’s quite dark at that setting. I did end up buying the cheaper 16.6 ND but it hasn’t come in yet. I would say that’s the better filter to go to so you can use higher shutter speeds or lower isos. Attached is an unedited photo along with a slightly edited version. This was on a clear day at high noon. With a little editing it was great but it’s still a bit darker than I wanted. If you can, get the 16.6 nd instead.
08/09/2025
I posted a photo of a shot I just took using the 20 stops - Canon EOS 5D Mark III EF70-200 F/2.8 IS II USM Focal Length 360mm Shutter 1/320 sec, Aperture F/8.0 with ISO 1600 - Pic is attached as is no editing so you get the grain of the ISO 1600, I will see if I can shoot at a lower ISO to avoid grain... (I am no expert, but I would think when there is a Totality at 100% would it be too dark, or you need to change filters out maybe?)
05/09/2025
Nice quality filter. K&F has good quality control in my opinion.
It's thin, but the edges have enough knurling to get the job done. I have always been in the habit of tightening all of my filters, and then pulling back a hair after it seems tight. Always leave some wiggle room for heat buildup, especially when viewing the sun.
That's what this is really designed to do, allow you to take images of the sun. And to that end, it does a great job of it! There is zero color cast, which is the way to go in my opinion. The color of the sun is bone white, not yellow.
The images came out nice and sharp. Everything was smooth across the frame.
You can look or image the sun nearly every day, no need to wait on eclipses with this.
This is a quality filter and safe for your eyes AND your camera.
Well worth the price of admission here.
*Always take your time when setting up to view the sun. Make it a point to read the filter each time before you put it on. Make sure you are putting the right filter on every time. The sun can be...unforgiving. Enjoy!
It's thin, but the edges have enough knurling to get the job done. I have always been in the habit of tightening all of my filters, and then pulling back a hair after it seems tight. Always leave some wiggle room for heat buildup, especially when viewing the sun.
That's what this is really designed to do, allow you to take images of the sun. And to that end, it does a great job of it! There is zero color cast, which is the way to go in my opinion. The color of the sun is bone white, not yellow.
The images came out nice and sharp. Everything was smooth across the frame.
You can look or image the sun nearly every day, no need to wait on eclipses with this.
This is a quality filter and safe for your eyes AND your camera.
Well worth the price of admission here.
*Always take your time when setting up to view the sun. Make it a point to read the filter each time before you put it on. Make sure you are putting the right filter on every time. The sun can be...unforgiving. Enjoy!
02/09/2025
I have never used a filter like this before. Of course, I put it on the lens, aimed at the sun, and shot a couple of pictures. They are pretty primitive - definitely beginner produced. I did start reading how other people use these. I am excited by the possibilities. I'll get better.
29/08/2025