With most cameras the plane of focus is parallel to the sensor/film plane, and the position of the lens is fixed. Some cameras, such as view cameras, and some lenses, such as tilt-shift lenses, allow this to be changed. It can be used to adjust focus, DOF, and perspective. Some photographers have modified normal lenses to get these features. They attach a light tight, flexible tube between the lens and body. If you google "DIY plunger lens" you will find all sorts of articles.
A Lensbaby is just a commercially manufactured version of this. Some Lens babies also use simple, archaic lens designs to get the look of old, simple lenses (soft in the corners, etc...).
Good morning all thanks for the comments.This is the place for sharing photos and having a chat there will also be games and other ideas.TJ has suggested a relay game.That goes like this perhaps you start out with a farm photo and ask for a pig.The next person posts a pic of a pig and asks for bacon. The next person posts a pic of bacon and asks for .... etc.Link to the relay game ↓ …See More
"Thanks John !..the crispness surprised me somewhat as i had used a 13mm close-up/macro extension tube attached to a 50mm Prime, the shot didn't need any sharpening in PS either. Oh, and no not yet, though i keep trying.. lol !!.."