- [Instructor] All right, now I'll show you how to zoom
continuously, or at least to a custom zoom ratio.
Now, as you can see, back on the PC, even though,
of course, everything works the same on my Mac.
Now, Photoshop, being Photoshop,
gives you a bunch of different ways to do anything,
and that is definitely true for continuous zooming.
And so notice, in all, we have five different methods,
each one of which I will review.
And by the way, they are listed in order of importance.
So the best one of them all is up here at the top.
You can click and hold with the zoom tool.
And so I'm going to temporarily access the zoom tool
by pressing and holding the Z key, like so,
and then I'll click and hold inside the image window,
and notice that I am zooming in continuously
until I release the mouse button.
You'll also notice that you've achieved a custom zoom ratio.
In my case, it's 624%, but your results will vary.
All right, let's say that I want to zoom out instead.
Then you press and hold the Z key once again,
click and hold with that key down, and then add the alt key,
or the option key on the Mac,
and you will zoom out continuous.
And then, if you release the alt or option key,
you'll zoom back in, and then if you press and hold it,
you'll zoom back out.
So you can go back and forth as much as you want.
All right, so much for method one.
Let's turn out attention to method two here,
by pressing control zero, or command zero on the Mac.
And notice, that not only fits the image on the screen,
but it also centers the image inside the image window.
And so next we have what's known as scrubby zooming,
which you achieve by dragging to the right
or to the left with the zoom tool.
And so I'll press and hold the Z key, like so,
and I will drag immediately to the right to zoom in.
If you drag to the left, then you will zoom out,
so there's no need to press the alt
or option key on this one.
However, you do need to be aware
that you need to drag immediately.
And so, notice if I press and hold the Z key,
and then I click and hold for a moment before I start
dragging to the right or to the left,
it doesn't matter which direction I'm dragging,
because Photoshop thinks I want that continuous zoom.
And so, if I want to zoom out right now, what I do is press
and hold the Z key and then immediately start dragging
to the left, as you see me doing here.
All right, so that's scrubby zooming, and it's been around
for more than a decade now, but a lot of folks prefer
a different behavior, which is to marquee the area
that you want to zoom.
And so, notice that if I press and hold the Z key,
I change the occupants of the options bar,
the horizontal options bar up here at the top of the screen.
And so, notice, as long as my Z key is down,
I can see this check box, scrubby zoom,
which is the feature that we just saw a moment ago.
If I turn this check box off and then I still have
the Z key down and I go ahead and drag with the zoom tool,
notice that I'm not zooming at all at this point.
Instead, I'm drawing a rectangular marquee.
At which point, as soon as I release,
I go ahead and zoom on that specific detail.
And as you can see, I ended up with another
custom zoom value of 182%, up here in the title tab.
And then, if you decide you like the other behavior better,
then press and hold the Z key, so that you can see
the scrubby zoom check box, up here in the options bar,
go ahead and turn it back on, and with the Z key
still down, just go ahead and drag to the left, like so.
All right, I'm going to press control zero,
command zero on the Mac, so that we can see
the fourth method which is available to you
if you have a laptop with a trackpad or a tablet,
such as the Surface Book or Surface Pro.
In which case, you just pinch or un-pinch.
Now, I'm working on a desktop machine,
I do not have a trackpad, so I cannot demonstrate that one,
but I think it's pretty straightforward,
so you can try that one out if you like.
And then, finally, you can press and hold the alt key,
or the option key on the Mac,
while using the scroll wheel on your mouse.
And so, this time, I don't even have to press the Z key,
I'll just move my cursor over her eye right here,
I'll press the alt key, or the option key on the Mac,
and then I'll scroll up in order to zoom in,
or I can move the scroll wheel down in order to zoom out.
And if you don't have an oldschool scroll wheel,
you could do a two-finger drag,
or whatever gesture works for that purpose.
Now, the advantage of this alt option scroll wheel thing
is that you're going to zoom in
wherever you've placed your cursor.
That is not true when pinching.
When pinching, as things stand right now, you're always
going to zoom with respect to the center of the image.
All right, so, there you have it.
Five different ways to continuously zoom
inside of Photoshop, all of which are going to result
in custom zoom ratios.