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--- glossary [2024/05/14 22:22] – [CHDK] Walter Schulz
+++ glossary [2024/12/19 19:59] (current) – [Aperture flicker] names_are_hard
@@ Line 67: / Line 67: @@
 -> [[#Pixel Binning]]\\
 -> [[https://a1ex.magiclantern.fm/bleeding-edge/lv-binning/binning-modes.html|Simulation: 1x3 "column binning" vs 3x1 "line skipping" vs 3x3 binning/skipping]]\\
+==== Aperture flicker ====
+Unwanted effect in time-lapse recordings caused by small variations in aperture actuation from selected aperture number. \\
+Every time a pic is taken, aperture blades will move from "open" to selected aperture and back. Consumer lenses with electronically controlled aperture blades are generally not able to repeat aperture actuation with infinite precision. Thus small but noticeable variations in exposure may result in displeasing flicker.
+Workarounds to avoid aperture flicker:\\
+- Use manual lenses\\
+- Use electronic lenses wide open only. (No aperture blades moving -> no aperture variation)\\
+- Use electronic lenses but twist lens in mount while DOF preview is activated. Aperture blades will be locked in position -> no aperture variation. Take care to avoid lens getting completely unlocked and falling off the camera.
 ==== ARM (architecture) ====
 [[#Developer|Dev]] lingo.