Kunzwisisa Kusiyanisa Pakati PeM CMOS neCCD Sensor
Makamera ose emakemikari ane sensor image iyo inotora mashoko kuumba mufananidzo. Iko kune mbiri miviri yepamusoro yezvifananidzo zve-image-CMOS neCCD-uye imwe neimwe inobatsira.
Mutevedzeri Wemifananidzo Unoshanda Sei?
Nzira inonyanya kunzwisisa yekuona mufananidzo wechiratidzo ndewokufunga nezvayo seyakafanana nechikamu chefirimu. Apo bhota yevharivha pane kamera yedijiti iri kuora mwoyo, chiedza chinopinda kamera. Chifananidzo chacho chinoratidzwa mukati me sensor nenzira imwechete iyo yaizobudiswa pachikamu chefirimu mune 35mm film kamera.
Digital camera sensors ine mapikisiki anounganidza photons (magetsi emagetsi emwenje) ayo anoshandurwa kuva mutoro wegesi ne photodiode. Nekudaro, ruzivo urwu runoshandurwa kuva chidimbu chema digital neanalog-to-digital converter (ADC) , zvichibvumira kamera kuti iite maitiro mumufananidzo wokupedzisira .
Makamera eDLRLR nemakona-uye-kupfura makamera zvinoshandisa zviviri zvemiviri yezvifananidzo: CMOS neCCD.
Chii chinonzi CCD Image Sensor?
CCD (Charge Coupled Device) sensors inoshandura pixel zviyero sequentially uchishandisa circuitry yakapoteredza sensor. CCDs inoshandisa imwe chete amplifier yepiksese yose.
CCDs inogadzirwa mu foundries ine zvipfeko zvakasiyana. Izvi zvinoratidzirwa mune yavo yakawanda inodhura mari.
Pane zvimwe zvakasiyana zvakasiyana neCCD sensor pamusoro peSENOS sensor:
- Pasina mhere-mhere uye kazhinji mifananidzo yakakwirira, kunyanya mumamiriro ekudzivirira
- Kunaka kwakakura kwemavara nokuti simba rakanyanya re sensor rinowanzopeta kaviri yema CMOS sensors
- Kugadziriswa kwepamusoro uye chiedza chekunzwisisa
Chii CMOS Image Sensor?
CMOS (Complementary Metal Oxide Semiconductor) sensors inoshandura pixel zviyero panguva imwe chete, tichishandisa maseresi ari mu sensor pachayo. Masero e CMOS anoshandisa zvigadziri zvakasiyana pamapikisi.
Masero e CMOS anowanzoshandiswa muDLRLRs nokuti anokurumidza uye akadhura kupfuura CCD sensors. Zvose Nikon neCanon vanoshandisa masero CMOS mumakamera avo ekupedzisira e-DSLR.
Sensor ya CMOS inewo zvinobatsira:
- Inokurumidza kushandiswa kukurumidzira nokuti mapikisi echishanda uye ADC ari pane imwechete chip
- Kutsika kweshandiswa kwemasimba, yakawanda kanopfuura ka100 pane CCD
- Yakabatanidzwa kamera inoshanda semotokari yekutsvaga, ruvara rwekodhi, uye kugadzirwa kwechifananidzo zvakananga mu chip
- Zvinodzivirira "kunyunyuta" apo mufananidzo unonyanya kuiswa
- Pasina mari inoshandiswa pakugadzirwa kwezvinhu, yakafanana neyese ye microprocessor, inoita kuti isanyanya kudhura
- Uhu hwakanaka huri nani kubva pakusanangurwa kwavo
Ratidza Mavara Mavara Semaoko
Rimwe ruvara ruvara rwemavara rwakakonzerwa nechokumusoro kwe sensor kutora zvitsvuku, zvitsvuku, uye zvebhuruu zvechiedza chinowira panzwi. Nokudaro, pixel imwe neimwe inogona kukwanisa kupima rumwe ruvara. Mimwe miviri miviri inofungidzirwa ne sensor yakavakirwa pamapikisesi akakomberedza.
Kunyange zvazvo izvi zvinogona kuchinja unhu hwemufananidzo zvishoma, hazvionekwi pamakamera ekugadzirisa nhasi. Dzana rese reDLRLRs dzinoshandisa teknolojia iyi.
Foveon Sensors
Maziso evanhu anotarisa kumatatu matatu ekutanga emavara matsvuku, mabhuruu, uye mabhuruu, uye mamwe mavara anoshandiswa nekubatanidzwa kwemavara makuru. Mufirimu kupikisa, mavara akasiyana-siyana anobudisa pachena iyo inokonzerwa nemakemikari pasi pefirimu.
Saizvozvowo, Foveon sensor ine zvidzidzo zvitatu zvemanzwi, izvo chimwe nechimwe chinoyera chimwe chemavara makuru. Chifananidzo chinogadzirwa nokubatanidza zvikamu zvitatu kuti zvive nemifananidzo yakareba. Ichi ichiri teknolojia itsva iyo inoshandiswa pane dzimwe Sigma makamera.