Ukuguqula ubude obungama-35mm ukuya kwiikhamera ze-APS-C zedijithali
Ezinye iikhamera zedijithali zidinga umphindiseli wokubala ngokubanzi ukuze kuqinisekiswe ukuba i-photographer ifumana ingcamango yembono abayilindeleyo. Oku kwaba yinto ebalulekileyo xa iifoto zatshintshile ukusuka kwifilimu ukuya kwidijithali, kwaye utshintsho lwenziwe kwiinkhamera ezininzi ze- DSLR ezichaphazela ubude obude obukhulu bobunzima be-lens.
Xa udibanisa ikhamera yedijithali nge-lens, kubalulekile ukwazi ukuba ingaba umqhubi wendawo yokugxila ekufuneka aqwalaselwe okanye akufuneki kucingisise-inokuchaphazela ngokuphawulekayo i-lensi oyithengayo kuba unokuthenga i-lens engahambisani neemfuno zakho.
Yiyiphi i-Focal Length Multiplier?
Uninzi lweekhamera ze-DSLR zi- APS-C, ezibizwa ngokuba yi-camera frame frame . Oku kuthetha ukuba banentsimbi encinci (15mm x 22.5mm) kunommandla wefilimu engama-35mm (36mm x 24mm). Lo mahluko udlalwa xa ubhekisela kumgama ogqithiseleyo weelensi .
Sekudala ixesha elide ifomati ye-35mm isetyenziswe njengendlela yokulinganisa kwiifoto ukujonga ubude obude beelensi abaninzi abaninzi beefoto. Ngokomzekelo, i-50mm ithathwa njengeyinto eqhelekileyo, i-24mm ibanzi, kwaye i-200mm i-telephoto.
Ekubeni ikhamera ye-APS-C inomfanekiso omncinci wesikrini, ubude bee-lens kufuneka kugqitywe ngokusebenzisa umphindisi wokubala.
Ukubala i-Focal Length Magnifier
Umtsalane obanzi ngokubanzi uhluka phakathi kwabakhiqizi. Oku kunokwahluka ngomzimba wekhamera ngokunjalo, nangona abaninzi abavelisi abanjengoCanon bafuna ukuba ukwandise ubude be-lens ngokugxilwa ngu-x1.6. U-Nikon noFiji bavame ukusebenzisa i-x1.5 ne-Olympus isebenzisa i-x2.
Oku kuthetha ukuba umfanekiso uya kubamba isakhelo esinezihlandlo ezili-1.6 ezincinci kunezinto eziza kubanjwa ngefilimu engama-35mm.
Umtsalane obanzi obude akanako umphumo kwibanga elijolise kwiilensi ezisetyenzisiweyo nge-DSLR epheleleyo. Ezi ikhamera zisebenzisa enye ifomati njengefilimu engama-35mm.
Konke oku akuthethi ukuba uthe wandisa i-lens yesigxina esiphezulu ngokuphakamisa ubude; Enyanisweni, i-equation ibheka into enje:
Ubude boBugxala obuPhezulu ÷ Ubude obude be-Magnifier = I-APS-C Ubude obude
Kwimeko yeCanon APS-C nge x1.6 kuya kubonakala ngathi:
50mm ÷ 1.6 = 31.25mm
Ngakolunye uhlangothi, ukuba ubeka i-APS-C lens kwi-body frame yekhamera yomzimba (awucebisi ngenxa yokuba uya kufumana i- vignetting ), uya kwandisa i-lens ngumbonakalisi ophezulu. Oku kuya kukunika ubude bakho obude obujolisiweyo.
Cinga iNgqumbo Yombono
Kungakumbi malunga nekota yombono ngokumalunga nobukhulu bokubamba ngaphezu kobude obude bendawo ye-lens, kwaye ukwenzela ukuba i-lenti ye-50mm ngokwenene i-lens enkulu yecala kwi-APS-C.
Le yinxalenye eyinselele kubalingisi abaye basebenzisa ifilimu engama-35mm iminyaka kwaye kuthatha ixesha lokugubungela ingqondo yakho ngale ndlela entsha yokucinga. Zixhalabele ngombono wokujonga i-lens kunokuba ubude obude.
Nazi ezinye zeendlela eziqhelekileyo zamalenti ukujonga uncedo ngokuguqulwa:
| I-Angle View (degrees) | 35mm 'Isikhokelo esigcwele' | Canon x1.6 I-APS-C 'I-Crop' | Nikon x1.5 I-APS-C 'I-Crop' | |
|---|---|---|---|---|
| Super Telephoto | 2.1 | 600mm | 375mm | 400mm |
| Telephoto ende | 4.3 | 300mm | 187.5mm | 200mm |
| Telephoto | 9.5 | 135mm | 84.3mm | 90mm |
| Eziqhelekileyo | 39.6 | 50mm | 31.3mm | 33.3mm |
| Eqhelekileyo | 54.4 | 35mm | 21.8mm | 23.3mm |
| Kude | 65.5 | 28mm | 17.5mm | 18.7mm |
| Kakhulu | 73.7 | 24mm | 15mm | 16mm |
| Super Wide | 84 | 20mm | 12.5mm | 13.3mm |
| Ultra Wide | 96.7 | 16mm | 10mm | 10.7mm |
I-Digital Lens Fix
Ukuze ugweme le ngxaki, abaninzi abenzi bekhamera bavelisa iilensi ezithile "zedijithali", ezisebenza kuphela neekhamera ze-APS-C.
Ezi iilensi zihlala zibonisa ubude bexesha eliqhelekileyo, kwaye zisafuna ukuphindaphinda ubude obude ekusebenziseni kubo, kodwa zenzelwe ukukhawulela kuphela indawo yesikhombisi esisetyenzisiweyo kwiikhamera zenkcazo zezityalo.
Ngokuqhelekileyo baninzi kakhulu ukukhanya kunye nokucwangcisa ngakumbi kuneekhamera eziqhelekileyo zekhamera.