Yuav tsum aperture siab lossis qis?

Cov txheej txheem:

Yuav tsum aperture siab lossis qis?
Yuav tsum aperture siab lossis qis?
Anonim

A qis aperture txhais tau tias lub teeb ntau nkag rau hauv lub koob yees duab, uas yog qhov zoo dua rau cov xwm txheej qis. Ntxiv rau, qis apertures tsim qhov tob zoo ntawm daim teb, ua rau tom qab qhov muag plooj. Koj xav siv lub aperture qis thaum koj xav tau kev txhaj tshuaj ntau dua.

Puas yog 1.8 lossis 2.2 aperture zoo dua?

A 50 mm f/1.8 lens muaj aperture txoj kab uas hla ntawm 50/1.8=27.78 mm txoj kab uas hla. f/2.2 yog qhov zoo dua lub lens zoo dua(tsawg aberrations, aperture dav yuav nyuaj), thiab me dua, sib dua, thiab kim dua, tab sis f/1.8 qhib dav kom pom ntau lub teeb hauv qhov tsaus ntuj.

Aperture twg yog qhov zoo tshaj?

Lub aperture tshaj plaws ntawm koj lub lens, lub npe hu ua qhov chaw qab zib, nyob ob mus rau peb f / nres los ntawm qhov dav tshaj plaws. Yog li ntawd, lub sharpest aperture ntawm kuv 16-35mm f/4 yog nyob nruab nrab ntawm f/8 thiab f/11. Lub lens nrawm dua, xws li 14-24mm f/2.8, muaj qhov qab zib ntawm f/5.6 thiab f/8.

Puas siab lossis qis aperture zoo dua?

The qis f-stops (tseem hu ua low apertures) cia lub teeb ntau 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.

Aperture yuav tsum tau teeb tsa li cas?

Tau koj lub koob yees duab thiab teeb tsa koj lub koob yees duab hom rau "Aperture Priority". Teem koj lub lens aperture ntawm koj lub koob yees duab mus rau qhovTus lej qis tshaj plaws ntawm lub lens yuav tso cai, xws li f / 1.4 yogkoj muaj lub lens nrawm lossis f / 3.5 ntawm lub lo ntsiab muag qeeb. Teem koj ISO rau 200 thiab xyuas kom meej tias "Auto ISO" raug muab tua.

Pom zoo: