Txhawm rau teeb tsa daim diaphragm kom raug, koj yuav tsum nkag siab tias nws ua haujlwm li cas. Lub diaphragm yog ib qho khoom siv hauv lub koob yees duab uas muaj cov hemispheres uas tswj cov dej ntws ntawm lub teeb rau hauv lub matrix. Yog li no, txhawm rau txhawm rau kho lub diaphragm kom raug, koj yuav tsum to taub lub ntsiab cai ntawm kev ua haujlwm.
Cov Lus Qhia
Kauj ruam 1
Ua ntej, cia saib cov lej uas qhia qhov loj me ntawm lub aperture thiab nco ntsoov cov xeeb ceem tseem ceeb ntawm tus f: tus lej qis dua, lub qhov rais loj dua ntawm cov khoom siv uas xa teeb mus rau hauv matrix. Qhov ntau dua tus naj npawb, qhov nqaim nias. Yog li no, ua ntej tshaj plaws, peb them sai sai rau qhov nyiaj ntawm lub teeb ntawm qhov khoom ntawm peb mloog.
Kauj ruam 2
Yog tias peb xav ua ib daim duab lossis tua cov khoom hauv lub chaw ua ntej kom pom meej, tom qab ntawd xaiv cov f-tooj me me, qhib qhov aperture. Feem ntau cov no yog cov ntsuas F1, 4, F2, 8. Peb txhais tau tias tom qab nrog cov lej muaj peev xwm yog qhov txawv txav, plooj.
Kauj ruam 3
Yog tias peb xav tau thaij duab toj roob hauv pes lossis duab kos duab sab nrauv, tom qab ntawd peb xaiv cov nqi aperture me me, lossis lub qhov me me rau lub teeb hla. Hauv qhov xwm txheej no, txhua yam khoom siv, tsis yog rau thaj chaw yav dhau los, tab sis kuj yog tom qab, yuav yog qhov ua kom pom tseeb.
