Advanced Tilt-Shift Image Techniques with Photoshop


Uploaded by goodlearning on 15.10.2010

Transcript:
Hi, this is Paul Kaiser for Goodlearning.com. We're going to cover some advanced tilt-shift
effect techniques here. We're using Photoshop right now, and I will show these effects done
later in, probably, Paint.net and GIMP. Tilt-shift effects take a normal photograph like
this and basically try to make it look like a scale model like this. What you see here are the
typical effects you get from the tilt-shift tutorials you find on the internet. I think we can
improve that. First, I'm going to show you how the typical tutorial goes. It's pretty good,
but it doesn't work on an image like this, and I'll explain why as we fix it. First, we're going
to the Quick Mask mode. We're going to use the Gradient tool. We're going to use the
Reflection mode. What we are doing here is selecting the areas that are going to be most-
focused, and the gradient is going to then let us gradually lose focus as we get closer-to
or further-away-from the camera. (Focal point.) So, we're going to focus most on this vehicle
here. I'm going to click, and move out here. And there we have our mask. Now I'm going to go
into regular Selection mode. I'm going to use the Lens Blur filter. Mostly, you can change
this Radius setting here to exaggerate the effect if you need to, but I think you can see
what we're getting here. This area right here looks most-focused, and as we get closer or
further from that focal point, things get a little blurry. So, we hit OK. Now we're going to
unselect that. The next step typically is to bump up the Saturation, because we're trying
to simulate a model. They're going to be painted with some bright paints, pretty shiny, and
they're probably not going to be very dirty -- so, we bump up the saturation. Some tutorials will
also have you increase the contrast. But let me tell you the problem with this image, and
then we're going to go in and fix it. You look at this building -- right here at the
bottom it is fairly well in-focus, because it's at about the same focal point as this car.
But, as we move to the top of the building, it gets blurrier -- even though the top of the
building is the same distance from the "camera" as the bottom of the building -- so that
doesn't look right. That happens a lot of places in this image, with all these vertical
expanses. They really should be the same "amount of focus," if you will, as the bottom of the
image. So, we're going to fix that. We're going to start with the same process. We'll go into
Quick Mask. Gradient tool. Reflection. Pick the spot that we want to be in focus. Move the
gradient outward -- there we go. I'm going to now Invert our gradient mask. Now what I
basically want to do is, I want the gradient on this building -- I want it to be the same pixel
value at the bottom as it is at the top. Same thing -- this building, I'm going to pick the
bottom pixel value in our mask, and I want it to be the same at the top. Well, I've already
saved some Selections, to make this quicker. First we're going to pick this building right
here. Before I do anything, I need to pick the pixel value. Let's get our Eyedropper tool,
go down here and pick a pixel. And now, I'm just going to Edit > Fill. I'm going to say
Foreground Color. So now, I'm affecting our mask here. I'm going to Select None. Let's do
this with the next building on the right, there. That's this building right here. Again,
we're going to go to the Eyedropper tool. I'm going to pick the pixel at the very
bottom. I'm going to Fill, again Foreground Color. Okay. Deselect. I'll quickly do this
with the next few buildings. Eyedropper. Pick our mask color from the bottom. Again -- we're
picking the Mask color -- not the color you see back there in the image -- we're still working
on the mask. Edit > Fill. Foreground Color. We could do ALT + Backspace, but I'm going
to walk you through the steps. Let's get these buildings on the left. This building here.
Eyedropper. Pick our mask level at the bottom. Edit > Fill. Foreground Color. Deselect.
Select > Load. Let's do the tree, it is a vertical area and I did, after all, work pretty
hard on the selection. Pick our bottom color. Fill the selection. Okay. I also think I
did the -- even the light poles -- the two bigger light poles, anyway. Eyedropper -- let's pick
that bottom mask level. And... did I do the other light pole? Okay, let's do the left back
building. Okay, Eyedropper. Pick our mask level from the bottom. Fill our selection. And... did I
get that building in the back? ... Mid-back building. Eyedropper. Mask level at the
bottom. Fill. Now let's see what kind of results we get. We're going to go and follow the rest
of the kind of "normal" tutorial steps. Go into Selection mode instead of Mask mode. I need to
Invert my selection, so I'm blurring outside the selected area. Now I go into the Lens
Blur tool, just as we did before, and I can kind of see the results here. Not too
shabby. I'll make it a little more pronounced. Okay. Unselect. Let's go ahead and do that
Saturation step. This is all the same stuff. The important change we made was where we selected
with our gradient. So there we bumped up the Saturation. And, this is our result. So, I'm not
real happy with this edge here. Probably, some more work could be done on that. But, you can
see there's quite a bit of difference from this to this. Let's make them smaller, so we
can see them here. Here's our regular version. Here's our improved version. You can see
them a lot better at Goodlearning.com on this tutorial page. I hope this
helped out. Let me know if you have any questions.