Hey guys I'm Criss and today I'm gonna explain and prove why do you need to use an
ND filter for your videos and what benefits it will bring you if you're using one.
Camera settings and other accessories are included as well in this video, so let's start!
So in the sequence that you just watched I used the Canon 24mm f2.8 STM lens.
I like this one so much because I use it on my Canon 80d and because it's a 1.6 crop
sensor camera, the 24mm lens transforms into a 38mm and this is a very nice focal legth
to work with when doing this type of shots.
I used also a variable ND filter, because everything was overexposed at f2.8.
But first of all, what exactly is this ND filter?
The aperture of your DSLR works the same as the human iris.
If too much light is entering your sensor, you need to raise up your shutter speed, make
the aperture smaller or even lower the ISO settings.
But sometimes, when shooting videos, you still end up with shots that are overexposed and
you really can't do too much to bring them back to normal.
Once those pixels are completely white, your shot is ruined.
And that is the moment when an ND filter comes in like a super hero to save your shot and
even your project.
It acts like a pair of sunglasses for your sensor.
And there are 2 types of ND filters out there: with fixed values, ND4, ND8, ND16 and also
variable filters like the one that I am holding in my hand.
This has a ring that lets you control the amount of light that is entering the lens
and sensor,
which is really handy.
Now.. if you have multiple lenses, I suggest you to check which of the lens has the largest
diameter and buy a variable ND filter for that lens.
And for the rest of the lenses just buy adapters, step-up rings.
They are extremely cheap but very helpful
because you only buy one ND filter which you will adapt on every single lens that you have.
So If you have a 58 mm diameter lens and your ND filter has 77mm, you'll have to buy a
step up ring adapter from 58 to 77.
I will link some variable ND filters and adapters in the description as well so you can check
them out.
In my oppinion before buying an ND filter you need to understand why are you buying
it, so let me explain.
When taking photos you can use any shutter and aperture values, it all depends on what
you want to achieve with that image, but when doing videos..
You need to play a different game.
If you want a cinematic look with a natural motion blur, your shutterspeed needs to have
a value which is double of the framerate you decided to use.
If you shoot at 25 fps, you need to set the shutterspeed to 1/50 th of a second, for 30fps
you need to set it to 1/60th and so on… you get the idea.
But what happens when you want to shoot at f1.4 on a sunny day?
Here's a good example.
For this shot, I also used a Canon 80d and a 50mm f1.4 lens.
I choose to record at 30fps, this means that I need to set the shutter speed at 1/60th
of
a second and I'm also choosing the lowest ISO value which is 100.
So I made all the correct settings for this type of shot.
But, if I check the histogram I can easily see that the highlights are really blown out,
and in this situation the LCD shows it very clearly that the image is completely white.
So in order to have a good exposure I can only close the aperture, but in that case
my background will not be so blurred.
I need to use an ND filter, which is a variable one, this means I can rotate the ring to
control the amount of light that is entering the lens and the sensor.
So I put the ring adapter on the lens it's a 58 to 77mm, then I mount the ND filter and
after this, I look at the histogram on the LCD screen and rotate the ring on the filter
to darken the image, until the histogram looks normal.
So I have the object in focus and also, a nice blurred background which is what I wanted
for this shot.
If you have a more expensive lens, do not buy a cheap ND filter.
The glass of the filter needs to be a quality one, otherwise, what's the point of having
an expensive lens?
So everytime you change location you need to take a look if your exposure is right and
if not, just use the ring of the filter to change it until the histrogram looks ok.
If you really want to step up your videos and maintain that natural motion blur for
a nice cinematic look, I recommend you to have at lest one variable ND filter and some
step up ring adaptors if you have multiple lenses.
In the past I never used ND filters but once I tried them my outdoor videos improved a
lot.
Also if you are interested in other video editing tutorials, there is a link in the
card right now, where I show you exactly how to color correct footage in Premiere Pro,
a very important aspect if you want to obtain quality results that will make your clients
happy.
Also, if you like the music that I use in my videos, you can get a FREE 30 days trial
on Epidemic Sound, the link is also in the description.
I will probably make a video, a special video about
this platform anytime soon, because I love
it so much and their tracks sound really professional.
Ok, I hope this video contained some useful information for you and if it did, please
hit the thumbs up and share the video with other people interested in this subject as
well.
I'm Criss and see you next time.
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