Qhov qis f-stops (tseem hu ua qis apertures) cia ntau lub teeb rau hauv lub koob yees duab Siab dua f-stops (tseem hu ua siab apertures) cia lub teeb tsawg rau hauv lub koob yees duab. … Thiab aperture tsis yog cuam tshuam lub teeb xwb - nws kuj cuam tshuam qhov tob ntawm qhov chaw. Qhov qis ntawm f-stop, qhov tob ntawm thaj teb tsawg dua thiab qhov muag plooj tom qab.
tus lej f-stop qis tshaj yog dab tsi?
Feem ntau, qhov tsawg tshaj plaws f-stop yuav yog qee yam xws li 2 lossis 2.8 rau lub koob yees duab 35 hli; los ntawm qhov ntawd, qhov kev pom zoo li qub yog 4-5.6-8-11-16-22. Qee lub lo ntsiab muag tsuas yog nqes mus rau f/16, thaum lwm lo ntsiab muag (xws li lo ntsiab muag loj dua siv rau ntawm lub koob yees duab saib) yuav nqis mus deb dua, mus rau f/22, f/32, f/45 lossis txawm mus rau f/64.
Qhov nruab nrab f-stop yog dab tsi?
Cov no yog lub ntsiab aperture "stop," tab sis feem ntau lub koob yees duab thiab lo ntsiab muag niaj hnub no cia koj teeb qee qhov tseem ceeb ntawm, xws li f/1.8 lossis f/3.5. Feem ntau, qhov ntse tshaj f-stop ntawm lub lens yuav tshwm sim nyob rau hauv nruab nrab ntawm qhov no - f/4, f/5.6, los yog f/8.
Qhov tseem ceeb npaum li cas f-stop?
Aperture yog hais txog qhov qhib lub lens lub diaphragm uas lub teeb dhau mus. … Txo f/stops muab nthuav tawm ntau dua vim tias lawv sawv cev rau qhov apertures loj dua, thaum qhov siab dua f/stops muab tsawg dua vim lawv sawv cev me me apertures.
F-stop ntawm lub koob yees duab yog dab tsi?
F-stop yog lo lus siv los qhia txog qhov ntsuas aperture ntawm koj lub koob yees duab. Lub aperture tswj tus nqi ntawm lub teeb uas nkag mus rau lub koob yees duab lens, thiab nws ntsuas hauv f-stops.