Photography
Having variable focal length of camera objective
Having indicator
Inventor
active
Depth-of-field indicator for a camera
Portable backlit studio
No associations
LandOfFree
Trygve D. Peterson does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Trygve D. Peterson, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trygve D. Peterson will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1675660