Dab tsi aperture rau astrophotography?

Cov txheej txheem:

Dab tsi aperture rau astrophotography?
Dab tsi aperture rau astrophotography?

Video: Dab tsi aperture rau astrophotography?

Video: Dab tsi aperture rau astrophotography?
Video: Yog hmoov dab tsi - Gao Nou Kue ft. Mang Vang (Official Music Video) New song 2020 2024, Hlis ntuj nqeg
Anonim

Aperture: Feem ntau nws yog qhov kev coj ua zoo tshaj plaws los xaiv qhov dav tshaj plaws aperture uas muaj rau koj lub lens. Koj xav kom lub teeb ntau npaum li ua tau los ntaus koj lub sensor. Qhov ntau ntawm f/1.4 - f/2.8 yog qhov zoo.

Puas aperture teeb meem astrophotography?

Qhov loj dua qhov aperture ntawm koj lub tsom iav raj, lub teeb sib sau ntau dua nws muaj, thiab cov ntsiab lus zoo dua nws tuaj yeem daws tau. Thaum aperture tsis tuaj yeem tsis quav ntsej kiag lihauv astrophotography, feem ntau peb mob siab txog ntau dua yog qhov sib piv ntawm lub tsom iav.

IS f 3.5 zoo rau kev yees duab hnub qub?

Feem ntau cov khoom siv lub koob yees duab digital tuaj nrog ubiquitous 18-55mm f/3.5-5.6. … Rau qhov kev txhim kho tseem ceeb tshaj plaws hauv koj qhov kev yees duab toj roob hauv pes zoo nkauj, Kuv pom zoo kom lub kaum sab xis dav nrog focal ntev li ntawm 35mm lossis tsawg dua ntawm cov koob yees duab puv, 24mm lossis tsawg dua ntawm APS- C koob yees duab thiab 16mm los yog tsawg dua ntawm Micro 4/3 koob yees duab.

Dab tsi yog qhov zoo tshaj plaws f ratio rau astrophotography?

Fast f/4 to f/5 focal ratios feem ntau yog qhov zoo tshaj plaws rau qis zog thoob plaws kev soj ntsuam thiab kev yees duab tob tob. qeeb f/11 txog f/15 focal ratios feem ntau zoo dua rau lub zog siab dua lunar, planetary, thiab binary hnub qub soj ntsuam thiab siab zog yees duab. Nruab nrab f / 6 rau f / 10 focal ratios ua haujlwm zoo nrog ob tog.

Puas yog f 8 zoo rau kev yees duab hnub qub?

Qhov chaw pib zoo thaum tua nrog lub lens dav yog f / 2.8 (los yog lub lens ' widest aperture), 25 vib nas this, thiab ISO 3200. Kuv hais qhov no yog qhov chaw pib zoo vim nws tso cai rau koj los txiav txim siab yuav ua li cas kho koj cov chaw los ntawm qhov ntawd raws li lub teeb pom kev zoo.

Pom zoo: