Posts Tagged 'imaging'

Getting Started in Adobe Lightroom 2

Lightroom is an outstanding application available for both Windows and Macintosh computers. It is primarily intended for professional photographers, but can be successfully used by anyone who is motivated enough to learn it. In my opinion it is actually much easier to learn and use than Adobe Photoshop. (Photoshop is still necessary for many purposes, especially for images other than photographs.)

Lightroom is great for working with multiple images. Lightroom competes with Apple’s Aperture application. Aperture, however, is only available on the Macintosh. Continue reading ‘Getting Started in Adobe Lightroom 2’

Remove noise from images with Noise Ninja

Finding and Using Medical Images on the Web (from Mayo Clinic Libraries)

Barbara Renner brought to my attention this useful article and links from the Mayo Clinic Libraries.

Image is Everything: Finding and Using Medical Images on the Web

Image resolution and print size

The following screencast uses Photoshop, but whatever image editor you use, the concepts are the same:

(1) There is an inverse relationship between print size and resolution (if you increase the print size the resolution decreases and vice-versa).

(2) To get good results when inserting an image into a research poster, the image should be printed at a resolution of at least 200 pixels per inch (ppi).

(3) Images that look good online may not be high enough resolution to look good in print at the size you want them to be.  For example, an image of 640 by 480 pixels may look fine on your computer screen, but printed at 200 ppi it would only be 3.2 by 2.4 inches in size.

Resolution and print size for images

Here is a convenient reference table from http://www.nikonians.org

Resolution & Print Size chart

If you want very high quality you need to print at a resolution of at least 300 pixels per inch (ppi). (Of course, you need to start with a good original image.)

Generally, a resolution of 200 ppi is fine for images to be inserted into posters that will be presented at conferences. 300 ppi is even better, but not necessary.  A resolution of below 150 probably won’t look very good.

So, for example, if you want to insert a 10″ by 7″ photo into a poster, the image should preferably be at least 2000 by 1300 pixels to look good.

Posted from Diigo.

Capturing still images with Jing

Jing is a great tool for quickly creating screencasts (images or video of your desktop). Jing is a product of Techsmith, the company that makes Camtasia.

In this video I describe how to capture still images with Jing. Thanks for watching!

Create a video made up of still images

This is an example of how a video can be made up entirely of still images. The photographs were taken with a Canon (EOS 30D) digital camera. The images were imported into iMovie. I will demonstrate how to do this in a clip coming soon.

This example contains sounds, music, and text over the images. You could also add a voiceover to a video made up of still images.