Tutorial 2 Resizing

Photoshop Resizing Tutorial

What is a pixel?

 

Short for Picture Element, a pixel is a single point in a graphic image. Graphics monitors display pictures by dividing the display screen into thousands (or millions) of pixels, arranged in rows and columns. The pixels are so close together that they appear connected.

The quality of a display system largely depends on its resolution, how many pixels it can display, and how many bits are used to represent each pixel

Unit Converter:

(1inch=96px)

http://www.unitconversion.org/typography/inchs-to-pixels-y-conversion.html

Resizing:

1.Drag desired image into Photoshop or open the file from your computer.

  

2.  Go to IMAGE- Image Size and this box should appear.

 3. This icon tells us whether the height and width values are linked together…if you change one the other automatically changes!

to unlock this uncheck constrain proportions:

4.  If you want to make an image a percentage smaller you can do it like this.

  

If Photoshop makes them smaller by tossing pixels away, how do you think it makes them larger? If you answered, "By adding pixels to the image", you’d be right! But here’s the bigger question. Where does Photoshop get these new pixels from that it’s adding to the image? If you answered, "Um, I’m not sure. I guess it just kind of makes them up out of thin air", you’d be right again!

Try this:

Open your student hard drive.  Make a new folder and call in Photoshop Resizing Tutorial.  You will save each step in this folder! Open Photoshop.

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2.     Find an image in Google images that is at least 500 pixels.

3.     Try making the image half the size (using pixels) by making sure constrain proportions are checked and diving one of the values and retyping it in the box.  Write out the division.  No calculators! Save as “steptwo.”

4.     Reopen original image. Unclick constrain and change one of the values to half the amount of inches.  The image should look very distorted. Save as “stepthree.”

5.     Reopen original image and change the image to 10% size. Save this as “stepfour.”

6.     Using “stepfour” resize the image to 200%.  Open the original and compare.  What do you notice? It should look very blurry.  Save this image as “stepfive.”