Injiniya yedzidzo chirongwa: Maitiro ekuongorora NEF faira pasi pe microscope

Paunovhura mufananidzo wenguva dzose `.NEF` mune yakavakirwa-mukati muoni, iyo system inoona yakajairwa EXIF musoro (TIFF chimiro): zuva, shutter kumhanya, aperture uye kamera modhi. Asi iripi iyo data nezve kuvandudzwa kwemakanika yakavanzwa?

Iyo data yenguva yekushandisa yakavanzwa mubinari yakavharwa mudziyo **MakerNote**.

Iyo mileage tag inowanikwa papi?

Kana tikavhura `.NEF` faira mune hexadecimal HEX editor (semuenzaniso, HxD), tichaona musoro webasa une siginicha. `Nikon\x00\x02`:

1. Tag 0x00A7 (Shutter Count):Iyi i4-byte integer muLittle-Endian kana Big-Endian fomati. Apa ndipo panopinda EXPEED processor zvakasimba inopinda nhamba yekutevedzana yefuremu yega yega.
2. Tag 0x001d (Serial Number):Hardwired encrypted serial nhamba yesystem board uye kesi.
3. Tag 0x00a8 (Flash Info):Counter yehuwandu hwekupenya kweakavakirwa-mukati kana kunze kwevaranda flash.

Sei masevhisi akareruka epamhepo achiparara pane mafaera eNEF?

Nekuti zvichienderana nechizvarwa che EXPEED processor (EXPEED 1 muD90 uye EXPEED 7 muZ9), Nikon akachinja. offset yebit minda muMakerNote chimiro.

Manyoro akatsveyama anotarisa kugadziridza pakero yakatarwa uye kuverenga marara byte, achigadzira "0" semhedzisiro. kana nhamba "4,294,967,295". Sevhisi yedu yewebhu yakavakirwa pane yakajairwa parser inokwenenzvera nemazvo chimiro chebyte chero zvizvarwa zvaNikon!

Tag byte kero tafura muMakerNote Nikon

Tag ID (Hex)	Tag name	Chii chinochengetwa mumabhaiti?
0x00A7	ShutterCount	Yakakwana shutter yekupfura counter (4 bytes)
0x001D	Siriyero nhamba	Factory serial number yechitunha
0x00A8	FlashInfo	Pulsed light trigger statistics