Ian Campbell
April 19th, 2008, 09:28 PM
Can someone suggest the best way to do a back focus set up? Here's the problem . . . I, like so many others, am having focus issues with my Z7U cameras.
If the camera is approx. 10 ft. from the pattern, much of the room is clearly in view on the monitor for the second part of the setup when the lens goes as wide as possible to calibrate. Will what is in view (other than the chart) affect the set up? In the house and office when the lens is at its widest you can see other things in the room (some further from the chart, others closer). I had to go outside to use the garage door (with chart taped to door) to have the least clutter around the chart. Even this wasn't perfect since the sides of the garage and some brick were in frame when the lens went to its widest.
Does the camera truly (when calibrating the wide part of the setup) use only the center of frame as reference?
Any thoughts would be helpful.
Thanks!
Ian
If the camera is approx. 10 ft. from the pattern, much of the room is clearly in view on the monitor for the second part of the setup when the lens goes as wide as possible to calibrate. Will what is in view (other than the chart) affect the set up? In the house and office when the lens is at its widest you can see other things in the room (some further from the chart, others closer). I had to go outside to use the garage door (with chart taped to door) to have the least clutter around the chart. Even this wasn't perfect since the sides of the garage and some brick were in frame when the lens went to its widest.
Does the camera truly (when calibrating the wide part of the setup) use only the center of frame as reference?
Any thoughts would be helpful.
Thanks!
Ian