First of all: this filter is really, REALLY dark. It's a little on the dark side even for direct shots of the Sun. I suppose it would be useful for close-ups of welding arcs, or maybe detailed photos of a nuclear detonation. Or EXTREMELY long exposures in bright daylight (sandy beach, high noon, f/11, ISO 100, 20 minutes?)

This filter was well-packaged, although the ribbed side of the case did leave a small "print" on the filter's front surface. I haven't yet tried to remove it.

The attached solar image was shot on a Canon 6D II, 100-400L at 400mm, 1/160, f/8, handheld and manually focused, stabilization on. I had to crank the ISO to 2500 to get this level of exposure. No other manipulation besides cropping and exporting as JPEG.

Ideally, for direct solar photography, I'd prefer a filter three or four steps LIGHTER than this, shooting at lower ISO -- but I'm still going to have plenty of fun with this one!

There's no specific information about IR or UV blocking on this filter, so I'm a bit reluctant to use it with the optical viewfinder. It's PROBABLY safe, but I err on the side of caution when it comes to my eyes. I didn't see any signs of trouble with my camera during the five or ten minutes that I was taking test shots.

Recommended, but know what you're getting into. And don't be afraid of the dark!

PRODUCT

K&F Concept 67mm ND1000000 Ultra Dark ND Camera Lens Filter

REVIEW

I like that this filter is label specifically for solar photography. No Guess work. At 1M rating (20 stops) you can be certain about your safety while photographing.

The sun is just starting to come out once and a while (after winter) so I'll do some sample shots and report back. I want to get in some practice before the next eclipse.

The lens seems really well made, I like the included cleaning cloths and protective case.

RECOMMENDATION

I can recommend this kit, it seems well made.

Bottom line - wouod highly recommend for solar photos.

I previously made a mylar filter, but I just couldn't get crisp photos. I saw this and thought I'd give it a try.

The filter seems to be excellent quality. This nano-x line by K&F is a big step up in terms of quality versus the normal k&f filters...not quite as good as say a peter mckinnon edition ND filter, but for the difference in price (less than 1/6 the cost), this is an awesome deal.

The case is high quality and has rubber ribbing to firmly hold the filter in place while closed, but still makes it easy to remove the filter from the case without getting finger prints all over the lens.

Can't wait for the upcoming solar eclipse. The photo I took was handheld and using a $70 - 420-800 mm lens (fully manual, lightdow lens)...so in terms of image quality of the photo, please keep that in mind. The only processing I did to the image of the sun was to crop and select B&W photo, as this lens does suffer from chromatic aberration.

This is a well made and functional solar filter. I purchased the 82mm diameter version, ND1000000, 20 stop for use with a Fujifilm 150-600mm lens. The filter has a sturdy metal frame, with raised grooves to assist in loosening and tightening the filter. The filter itself is glass, but quite lightweight. It installed easily and securely to the lens, and allowed the lens cap to go on over the filter. It also comes with a nice carry case when not in use.

The images of the sun with auto white balance come through in a neutral gray color, but boosting the white balance to a manual 8,000K gave a more pleasing yellow hue.

My only question that I’m looking to have answered is the IR transmission of this filter. I want to make sure if I have this pointing at the sun for several hours during the upcoming eclipse (taking interval photos every five minutes or so), will enough infra red wavelengths come in to heat up and damage the camera sensor.

Certainly a quality product and great for solar imaging.

I misread the listing when it said ND1000000, I read it as ND100,000, however, it’s actually ND1,000,000 filter. It’s super dark. Filter is very slim and very well made. It comes with 3 cleaning cloths and in a well designed filter case that holds it in place when not in use. I took a test shot of the sun in the afternoon and was surprised of the low shutter speed I needed to use ISO 200, F5.6 @ 1/60 sec. I’m excited to hand this on hand for the upcoming solar eclipse in April. Very high quality filter that will also protect the camera sensor from the sun. Highly recommended!!

I love these filters from K&F. They are excellent solar filters and a good value. This is the second one I have in the 95mm size. The first was a ND100,000 with a reduction of 16.6 stops. This one at ND1,000,000, 20 stops, provides some addition options for getting solar images. Attached is a picture taken with this filter on 2/10/2024 using a Tamron 150-600mm G2 and a Nikon D500. You can clearly see the solar flare in Region 3567 that was prominent today.

The K&F Concept 49mm ND1000000 Ultra Dark ND Lens Filter is well made and feels very durable. Fits perfectly on my 50mm Sony lens. It’s easy to use and it’s a great filter for the money.

Does what it's supposed to, and does it well

Got photos of the solor eclipse. My lens was not the best but this worked great.

I have several K&F filters and they all perform reasonably well.

Any time you put extra glass in front of your lens you run the risk of compromising the optics. I find that the K&F filters don't really impact the overall image quality and this one is no exception.

Keep in mind that this filter is highly specialized. It's really made for photographing the sun. If that's what you need it for, then it's definitely worth the price.