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Neutral Density Filters Explained ▶︎ What is it? Why do you need one?

Photo Moment - September 26, 2018

Why should every photographer and cinematographer have an Variable ND (neutral density) filter? How does it even work?! I hear you cry! Well, wonder no more, because this show will explain it all.

Products Mentioned In Today's Photo Moment

Fotga Variable ND Filters — Get Yours Here

K&F Concept Step Up Ring Set — Get Yours Here

Panasonic LUMIX Leica Nocticron 42.5mm f/1.2 — Get Yours Here

Videos Mentioned In Today's Photo Moment





Other Links Mentioned In Today's Photo Moment

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Comments from YouTube

Hopefully that explanation wasn't too dense.
Do you prefer a variable ND filter, or do you prefer static setting ND filters?

See something on the show that you want to buy?
Head on over to

•• Fotga Variable ND Filters ••

•• K&F Concept 11pcs Metal Stepping Rings Step Up Ring Set ••

•• Panasonic LUMIX Leica Nocticron 42.5mm f/1.2 ••
Thanks PJ, that was a great tutorial. And the demo was bang on!
Hi Joseph, I ran into reflections when using step down rings, the further the nd from the lens the more issues. Do you have a personal favorite varible nd filter? Thanks for the video, great stuff as always!
interesting, I'd wager those were cheap filters without good coatings. I just did a video on the Freewell filters, watch that next — I also really like the Aurora variable ND filters. Fair price and very good quality
nd filter reduces the light brightness (for example by %50)
is there are any filter that reduce the brightness by removing a specific amount of light?

for example a filter that remove 500 lux of light
so if 200 lux of light is in nothing is passed
if 900 lux of light is in only 400 is passed
(sorry for my english)
ND filters don’t remove a percentage, they remove an amount, measured in stops. Light isn’t quite a linear as you’re describing, but if you have a filter that removes the equivalent of 500 lux and you only have 200 lux, then virtually no light will get through. I woldn’t expect it to be pure zero, but it’ll be very little, and to a camera sensor, it’d be effectively zero. At least that’s my theory ;-)
Wow. I have watched alot of videos and yours are the best for learning this stuff.
Thank you!!
Great advice cheers
can you do something on Polarizers?
Super helpful!
can you get bokeh balls from a M43 camera with the right lens?
Please do a video on bokeh balls.
Thank you.
Of course you can! Bokeh balls come from small high contrast areas that are out of focus. On any lens on any camera, the closer the subject to the lens, and then the farther the distance to the background, the more prominent those will be. You can even get bokeh balls on an iPhone, and I don't mean using the fake "portrait mode". Just focus on something really close, and it'll happen. Using the ND filter lets you shoot at a wider aperture even in full sun, getting you where you need for the effect you want.
Great demo! Thanks!! I'll find a way to support you...promise.
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