Straightening Multiple photos

When we have scanned some photos on a page, and these are all not straight, then we can do a very quick way of straightening and cropping.
We use the option “Crop and Straighten Photos”.

Just click the button “File” in the menu bar, select “Automate” in the drop-down menu, and click the “Crop and Straighten Photos”.
This will be a very quick and correct way to crop and straighten every scanned photo onto a separate page.

Photo Scale, Content-

A new feature in Photoshop CS4 is the “example scales to preserve the content”.
What this feature does is, it scales an image while the size of a part of the picture is preserved.
Why do you need this?
For example, when you want to you change a vertical photot to a horizontal photo, without removing any content of the photo.
The first thing you should do is to create a “normal” layer of the background layer.
On a background layer this function does not work, this is in fact locked (1).Double-click the background layer (2), and in the “New Layer” (3) dialog, click the OK button. That is all.

When we have the normal layer of the background layer, it is unlocked. We can continue.
Click the “Edit” button in the menu bar, and click the “Content Aware Scaling” in the drop-down menu. This puts drag handles around the photo.
At the top of the options bar, you will find the button “Protect Skin tones” (2).
This button can be used when you have a person in the picture and you think that this is the part of the picture where the size should be maintained while we scale the image.
This works properly only when you retain the size of a head, but when we maintain the dimensions of another object, eg, the balloon in the image below is completely wrong (3). The balloon is more like a squeezed lemon.
Better, however, when you retain a part of a selection.

So first we make a selection of the balloon and save this selection.
How to do that, you know that by now.
In the “Protect”, click the downward pointing arrow and choose the selection that you just saved (1).
When you click and drag a handle (2), you will see that the size of the photo changes, all content is preserved, and especially the dimensions of the balloon remain the same (3).

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