Are rack & pinion focus lenses common as taking lenses,
or are they as I suspect projection lenses?
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Are rack & pinion focus lenses common as taking lenses,
or are they as I suspect projection lenses?
Most common on projection lenses but way back when taking lenses had rack and pinion focus too.
Probably both, because if you ever used a large old portrait camera, the fine focus is not so smooth/precise (as you are pulling/pushing the standards/bellows with the wobble/resistance inherent), so much easier just to final focus the lens...
Steve K (2017, and counting...)
Yes, I have and have used an 8x10 studio camera but have not found it necessary to futz with fine focus provided by a rack focusing device. My loss perhaps.
Thanks to Dan and Steve for clarifying the issue.