Home > Term: internal focusing (IF)
internal focusing (IF)
system in which only the internal lens group shifts during focusing. IF benefits include focusing without changing the physical length of a lens body, faster focusing, reduced diameter of the focusing ring, closer minimum focusing distance, and aberrations corrected throughout the entire focusing distance range.
- Part of Speech: noun
- Industry/Domain: Photography
- Category: Professional photography
2
Creator
- LaneK
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