If you've ever tried changing focus between subjects while shooting a video with your DSLR, you'll know that auto-focus will often leave you with a stuttering and noisy clip, while using your hand on the lens in manual focus can be tricky. Follow focus systems try to make this easier and better by adding a handle to change focus smoothly, and marker points to move between. The newly-launched FocusMaker is the latest example, which promises the fastest and most accurate focusing of any affordable rack focus system.
1KIND Photography: 2012
If you think the purpose of peripheral cameras is for others to very clearly see your face, then the ROCWARE RC16 might be what you're looking for!
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Calumet Focus Summer 2013 by Calumet Photographic - Issuu
1KIND Photography: 2012
FocusMaker – Sharp & Simple Follow Focus for DSLR video
FocusMaker - Making Sharp DSLR Video in a Simple Way
USED: Focus Maker Kit
DIY Follow Focus for DSLRs : 4 Steps (with Pictures) - Instructables
FocusMaker – Sharp & Simple Follow Focus for DSLR video
USED: Focus Maker Kit