Pomen vhodne zenice - Razkriti miti o zaslonki in f-stop

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Opis:
Ali ste vedeli, da f-stop ni mera zaslonke vašega objektiva, temveč razmerje za premer njegove vhodne zenice? Razjasnitev napačnih pojmovanj o zaslonki, f-stop in f-številkah.
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