To use In-Body Image Stabilization (IBIS) with non-electronic lenses, the focal length must be specified in the settings. What about zoom lenses? It is difficult to adjust the setting after the focal length changes.
So it's easier to set a focal length once, but what is the best? An attempt to calculate the optimal focal length: Selecting IBIS Zoom Focal Length
For example, the Variozenitar 25-45/2.8-3.5 lens:
It gives an optimal focal length of 32-35mm. Previously, I chose 35mm (on the Sony a7c) without these calculations.
See also related notes:
- Вариозенитар 25-45/2.8-3.5 (2022-12-23)
- Sony a7c: поддержка неэлектронных объективов (2022-04-26)
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