How-to-Guide [Part 5] Screen and File Size

Both the screen and file size can be changed in the ‘Image Size’ box. In this box I am able to change the width, size and resolution of the image. To find this option I go to: Image > Image Size.

Here is a screen shot of my image before I have made any adjustments to the size. The width is 628 pixels and the height is 731 pixels.

 

The size dimensions of my original image.

Here is the same image now that I have increased the size. The width is 1000 pixels and the height 1164 pixels. As result of this increase in size I am unable to see the image whole.

 



The increased size dimension of my image.

Now I have made the image smaller as shown in the screen grab below. The size is 300 pixels by 349 pixels. As a result of the decrease in size it is now hard to view when editing parts of the image.

The decreased size dimension of my image.

My image in its original form is set at 300 pixels per inch.  This is high quality and this means that when it is zoomed in upon the image stays clearer retaining its quality. The image shows that although the image is zoomed in to 300% it still remains its quality and the images has only just started to pixilate.

The image is set at 72 pixels per inch and it has been zoomed in to 300%
Here, the image retains its quality and is only just now started to pixilate.

The file size for this image is 188KB

The file size for this image is 188KB.

If I am to decrease the pixels per inch to 72 this will reduce the size of the image and also significantly reduce the file size taking less space on my computer. Unfortunately if I am then to zoom into this image to 300% very quickly the image will become very blurry.

My image is now set at 72 pixels per inch.

As you can see, setting the resolution so low
when the image is zoomed into 300% it becomes blurry.

The file size for this image is 65KB

The only time I would consider using an image this small is if I needed to send it via mobile phone as this would have a low upload time and because of the quality of images on mobile phones it wouldn’t have such a detrimental affect. It must be said, smart phones are capable at handling larger files and are able to see images much clearer, but, consideration of the file size must be taking into account prior to sending the image.