Since I've mainly photographed with variable ND filters so far, I wanted to buy a set with fixed values to have even more leeway. The filters have different dimming levels:

ND8 - corresponds to 3 f-stops
ND64 - corresponds to 6 f-stops
ND1000 - corresponds to 10 f-stops

To calculate the shutter speed, you simply have to multiply the time by the ND number, for example if you have a shutter speed of 1/1000s and want to use an ND64 filter, you get a time of 1/15s.

An example:
1/1000 = 0.001 * 64 = 0.064s
For times less than 1s, you then have to take the reciprocal, i.e.:
1/0.064 = 15.624 i.e. a new shutter speed of around 1/15s

You can calculate this with the calculator, or you can use one of the many apps that calculate the whole thing very easily on your smartphone, you just have to enter the values. Alternatively, you can try things out a bit and after a while you have enough experience that you can roughly estimate it without calculating. Alternatively, you can also find tables on the Internet that you can print out and take with you.

But enough about the theory now. The filters make a very valuable impression. Of course, you can also buy such filters in completely different price ranges and that may be fine for a professional photographer who earns his money with them, but for the normal photographer who does this as a hobby or simply does not shoot in the high-end sector, these filters are great.

They are very flat, which has the advantage that you don't see a vignette in the corners with wide-angle lenses. You can even combine the filters to achieve even longer shutter speeds. Yes, you could combine them even with a variable filter. As a rule, with these 3 filters alone, you can set the correct shutter speed for pretty much all common situations. You can still compensate a bit with aperture and ISO. When combining, you just have to make sure that the filters then apply something to the front of the lens and then you may have to expect vignetting at the ultra wide angle. I tested the filters with my Tamron 28-75m f2.8 and I had no problems with that.

The image quality is very good, especially considering the price. Getting 3 filters for just under 50 euros (at the time of writing this review) is a very good offer. What's more, you get the case in which you can safely transport the 3.

There, the filters are simply pushed into the respective pocket. When taking it out, you just have to be careful not to reach into the glass, otherwise you will have fingerprints on the glass. But with a little mindfulness, this can be avoided.

For me, this is a great set that also gets 5 stars. Of course, I can also recommend a purchase. A good solution for beginners and advanced photographers. Professional photographers usually have their preferred brand and filter models anyway.