How to Resize Images in Various Ways – Next Photoshop Lesson

November 13, 2008

On your bed side is your favorite photo of your girl friend. You want it to be smaller so it can fit inside your wallet. You try to scale down the size but the image becomes a bit blurred. Changing the sizes of pictures is a common problem but with Photoshop, there is an easy solution.

These instructions are for Photoshop CS and CS2. The CS version is very advantageous because of its innovative latest features.

To make an image smaller, browse to “Image” then “Image Size” menu. Press on “Resample Image” and select on the drop-down menu “Bicubic Sharper”. You get the perfect setting in assuring that a picture will not blur. For example, a photo of your wife is set at two thousand pixels across. Even if it is lessened to two hundred fifty pixels and then to one hundred twenty five, there is no decrease in sharpness.

Bicubic Smoother should be selected in making an image bigger. This is a much more useful technique that you would want to have as a default setting for the Image Size menu in Photoshop. But further experimenting on the program would reveal that you yourself can set it in default. The steps should be to browse to “Preferences” then to “General” and “Image Interpolation”, here you can choose “Bicubic Sharper” from the selection.

Another tip in resizing images is to execute it once per image. Other people will change sizes repeatedly in trying to find the right size and will result in an image with a not so pleasing blur. It is recommended that you do trial and error on a copy image. After deciding on the final measurements, return to the original and change its size only once.

Reminder:

An image in GIF format should never be resized. You should initially transform the mode to RGB Color, and then change the size. Your new sized image can still be saved as GIF, just do not resize the picture in GIF mode.

Resizing and Resampling Images

The amount of data in an image adjusts or changes once it is resized and resampled. Resampling an image is done by checking the Resample Image box at the lower part of the Image Size dialog box. Resample mode is set on default.

Resampling alters or adjusts the total amount of pixels of an image, which are presented as Height and Width in pixels found in the dialog box of Image Size in the section of Pixel Dimensions. Once there is upsampling or when the amount of pixels in this section’s dialog box gets higher, more data are added to the image by the application, and once there is downsampling or when the amount of pixels get lower, some data are taken out by the application.

The quality of an image is corrupted to some degree every time there is data taken from or added on to an image. Elimination of data is preferred rather than the addition due to the fact that upsampling entails that Photoshop Elements or Photoshop will estimate which pixels to put in. This is a much more complicated procedure than estimating which pixels to eliminate in downsampling. Great results are achieved when images are brought to Photoshop in the correct resolution for the output desired. Resizing images with no resampling involved may also give out the results that you need.

With a little help from Photoshop, resizing images is not such a complicated thing to do after all.

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