BullsEye Camera-Alignment Device

BullsEye Camera-Alignment Device



       The BullsEye™ provides a quick way to center a camera to flat artwork, to prevent a keystoned image.


       The typical approach for squaring the camera with the art work is time consuming.  If the artwork hangs at an angle from the wall, camera alignment becomes more complicated.  Simply centering the object in the camera’s viewfinder does not guarantee a rectilinear image.  


      The BullsEye™ is made in the shape of a hollow spool.  A mirror is attached at one end, facing inward.  A curved wire handle loosely holds the device by side holes at its center of gravity.  A cloth strap, attached to the wire handle, holds the BullsEye™ from above.  The pressure against the artwork is a small fraction of the 3-oz. weight of the BullsEye™.  

Force = 3 oz. x (tan strap angle, from vertical)

Angle of cloth strap
Force on painting
0.05 oz.
0.10 oz.
0.21 oz.
0.42 oz.
0.53 oz.


To use:

Step 1:  Hand hold the BullsEye™ in the center of the artwork.
Step 2:  Pull the loose end of the cloth strap upward and pin it to the wall, or drape the strap over the frame allowing the counter weight to hold its position. The mirror of the BullsEye™ automatically settles flat against the artwork to be photographed.
Step 3:  Position the camera in front of artwork, at the required distance to photograph the whole painting, with the camera’s reflection visible in the mirror of the BullsEye™ viewing through the single-lens reflex viewfinder, or the LCD of a digital camera.
Step 4:  Remove the BullsEye™ from the artwork and take the picture.


      As used above, the cloth strap is draped over the top of the painting and the rubber ball counter weight, at the far end of the strap, holds the BullsEye™ in position.  A felt backing on the mirror prevents damage to the painting.





  • This seems to be exactly what I need“, Christine Smith, Nov. 4, 2019


For more information:

Photo Imaging News, Volume 21, No. 13, June 14, 2004



Hines’ p. 58 lab notebook entry for this invention.


     HinesLab is actively seeking licensees to commercialize this technology.  This is not a product being offered for sale to end users.  To discuss licensing, please contact Steve Hines at:

HinesLab, Inc.
Glendale, California, USA
email: Steve@HinesLab.com