So, we are doing the lighting for the secondtutorial.
If you remember previous tutorial we usedtwo lights.
One big octabox and one beautydish.
Here, we are using beautydish and two softboxes.
We are using one additional light.
I just want to give you an idea that i amusing an additional light to highlight her this cover-up.
The black colour will absorb more light.
So, to compensate for that we need an additionallight and I am using this as to create a distance between the background and the model.
We can use different lighting setups to createdifferent looks.
There is no rule that you should use one lightor two light or three lights for particular look.
It entirely upto your imagination and creativity.
If you want to use one light, you can useit.
If you want to use four lights, you can usethat.
The lighting effects will be different butif you know how to use the lights then you can create an awesome image even with onelight.
Now, we are talking about Aperture.
Aperture is what controls the depth of field.
In studio, usually I change only aperturefor any reasons.
I mean shutter speed and ISO remains same.
I set ISO at 100 and shutter speed at 1/125.
Only aperture is what I change.
The relevance of aperture is that wider theaperture, more concentrated the focus will be.
For example, if you want to get full bodyin focus.
For example, from her head to toe if you wantto be in focus, you need to use aperture at least f8.
f8 or above.
And if you are going close-up and you wantonly her eyes to be in focus, then you can use aperture f4 or f2.
8 or any lower numbers.
I am taking a shot with following settings.
I am using ISO100, Shutter at 1/125 and Iam using Aperture f9.
I am going for a full length image.
I want her full body to be in focus.
So, I am using a narrower aperture.
This is a decent image, as you can see thewhole body is in focus and every detail is visible.
So, now what we will do is we will decreasethe aperture to f4.
0 that is the minimum this lens will go and I am trying to take a fulllength shot focused on her face.
The picture we have taken is overexposed.
Because, when we reduced the aperture, wedidn't compensate for that.
When we reduce the aperture, automaticallythe light will increase.
To compensate that either you can decreasethe ISO or you can increase the shutter speed.
Both the things we cannot do right now.
So, only option is change the intensity oflights.
So, I am changing the intensity of light with2-3 stops and i am trying it again.
This image is perfectly exposed.
As you can see her face is in focus and herlower body is out of focus little bit.
So, this is the main usage of aperture whereyou can create a different depth of field.
Main use of aperture is in outdoor photographywhere you can create a bokeh effect or you can blur the background, that kind of thing.
But, in studio main use is this and I mustsay that usage of aperture is limited in studio compared to outdoor, but still it have itsown uses.