How to Calculate Image Resolution

 

The detail in an image is determined by resolution. The shorter the lens focal length, the wider the field of view. Greater than about 90 degrees most lenses start to show curved, barrel distorted images that compress the image at the edges. Rectilinear lenses such as those using Theia Technologies’ Linear Optical Technology™ don’t exhibit barrel distortion and thus maintain image resolution out to the edge of the image.