Composition Tools and Techniques
The Rule of Thirds
Aspect RatioAspect ratio is the mathematical relationshipof the height to the width of a rectangle. Asquare has a 1/1 aspect ratio because itsheight is equal to its width. Most DSLR’shave an aspect ratio of 2/3 because forevery two units of height there are threeunits of width. Olympus DSLR’s and anumber of other cameras, now, have a 4/3aspect ratio. So do old fashionedtelevisions and standard computer monitors.