Welcome to the Club " T&S Club ", Please go to the Link below.
I apologize in advance for my ignorance and probably silly question, but what's the purpose of that strip with circles attched to the lens?
Dear Friend , NWPhil.
The Bull eye target picture( From My BB-Gun Target Practice) , 1- I put at he back of Camera to show the Location of Sensor in the Camera, 3- of the Bull eye targets the Center is show of the Center Location of the Real Photo= at the Right Focus, The Left Bull eye target is show the Tilt of Lens toward the camera sensor( When I tilt the Lens to the Left position) = Make the Left side Details of Photos = Blur, The Right Bull eye target that show on the photo = move toward the front of the camera, or far away from the sensor, compare with the center bull eye position= that make the right side of the picture are blur. That how to change the DOF in both side of the Photo, and leave the center is only area is sharp.
Yes, I use this method to show to my Photography/ Camera club, to show them , how it work.
Here is a great Video that I adapt for my class
|Using a Tilt Shift Lens: Ep 204: Digital Photography 1 on 1||Small | Large|