Focus breathing
Focusing is internal, meaning the Hasselblad X 30mm F3.5 lens does not physically extend in length through the various focus distances. There is focus breathing - meaning a shift in the image area as you move from close to infinity focusing - but as a wide angle lens it's not too bad.
Focus breathing alters composition so you'll need to nail focusing before any final adjustments to framing. Given this is a wide angle lens it is possibly less of an issue because there is more wiggle room with composition.
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