CraftOptics offers three focal lengths to choose from:
Short: 12-14 inches
Best for jewelry bench work or for those preferring to hold their work closer.
Regular: 14-16 inches
Best for table/desktop activities or like beadwork, quilting, sewing, needlework, etc.
Long: 16-18 inches
Best for long arm quilting or relaxed position lap work.
The depth of field of 4-5 inches in our optics means that you can move several inches either side of those focal lengths, creating greater flexibility in your working distance.