So what's the reality?

I'll call that well, we'll call that a focus because it will be a focus.

And what we want to do is, we want to find out the coordinates of the focal points.

Requires great focus.

It's not just focused on the particular, it's focused on kind of the metalevel.

And this is f2.

And it's for focus.

Let's take it right there.

Set here equivalent focal length assuming a 35mm film camera, in mm. A value of 0 means the focal length is unknown.

And let's say I have some other point.

Well, the first thing you do is though I've never well, we could just figure out the focal length just by plugging into the formula.

The distance of this point to the image plane up uppercase Z.

And then we can try to figure out if we have a parabola, how do we figure out its focus and is directrix.

Something really weird is going on here.

We have focused on the worst case scenario.

Let's focus on the conversations between our friends and our family and our coworkers and our loved ones.

This chapter will focus on the riddles of the planets.

And you enter that space, and you feel like, Wow!

Though graphics hardware can definitely accelerate image processing operations. We'll mostly be focused on 3d rendering in this course.

So there's one point that just by looking at it we could say is going to be in our locus.

That's just this distance right here.

So let's call that a directrix.

Focal length

Focal

Focal Length

Focal blur

Focal point

First Focus

Second Focus

Focal Length

Focal length

Focal length of the lens

Well, we just used the distance formula.

Or they can be, I don't want to say always.

But where's the focus point?

That's the point.

So, anyway, this is the really neat thing about conic sections, is they have these interesting properties in relation to these foci or in relation to these focus points.

And what I need, in effect, is a focus.

It's equidistant from a focus and a directrix, where this is the focus.

I'll do it on this right one here.

That's our directrix and it has the equation y is equal to k.

And then we can essentially just add and subtract them from the center.

We focus on Parker. And move it.

Show camera aperture and focal length

Construct an ellipse with this focus