Choose the problem you are trying to solve, then confirm your exact product codes in the official references.
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Why AF-C may be limited on an adapted lensContinuous focusing depends on body firmware, adapter electronics and lens drive. Still-image AF support does not prove AF-C in every burst mode.→Still AF and movie AF are separate checksA mount adapter can support still-image AF while movie AF is disabled. Sony explicitly says LA-EA5 does not provide AF during movie recording.→How to check lens and body stabilizationLens optical stabilization and body sensor-shift can have separate or coordinated behavior. A stop rating from one test is not universal for every pairing.→Lens compatibility after firmware updatesFirmware can change supported functions, so a historical compatibility statement may no longer cover your current versions.→Electronic aperture vs mechanical apertureAn electronically controlled lens needs a compatible camera or electronic adapter for commanded aperture changes. A passive ring may leave aperture fixed.→Why manual-lens EXIF can be incompleteA lens without electronic contacts cannot automatically send all metadata to the camera. Some bodies allow manual focal-length entry for stabilization or EXIF.→Eye and subject detection with adapted lensesBody subject detection and lens drive are separate capabilities. An adapted lens may focus without matching every tracking behavior of a native lens.→High-speed bursts and adapter limitationsAutofocus and exposure tracking can be constrained at faster burst rates, even if single-frame operation works.→When in-camera lens corrections applyAutomatic distortion or shading correction depends on a recognized lens profile and body settings. A manual adapter may supply no lens identity.→Three ways to find a lens filter sizeThe front-ring Ø mark, lens manual and official specification are better evidence than the lens's focal length.→Why 50 mm focal length is not a 50 mm filterFocal length describes optical behavior. Filter diameter describes the front mechanical thread; they use the same unit but answer different questions.→Using a 67 mm lens with a 77 mm filterA 67→77 step-up ring screws its 67 mm side into the lens and presents a 77 mm filter thread.→Why a step-up ring can block the hoodIncreasing the front diameter can collide with a bayonet hood or prevent hood removal. Thread fit alone does not prove accessory clearance.→Why step-down rings are risky on wide lensesA smaller filter in front of a wider lens thread can intrude into the field of view, especially at the wide end.→Buying a UV or protection filterA screw-in protection filter needs the exact front thread and enough clearance for the lens cap and hood. Protection claims are separate from fit.→Fixed vs variable ND mounting checksBoth need a compatible mount size, but variable ND adds a rotating front ring that may interfere with a hood.→CPL filter rotation and clearanceA polarizer normally needs rotation after mounting. Tight hoods or stacked rings can prevent access or cause corner shading.→Can magnetic filters cross brands?The same printed diameter does not establish a shared magnetic latch, polarity or adapter-ring geometry.→
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