I-JPEG, i-TIFF, i-PSD, i-BMP, i-PICT, i-PNG, ne-GIF ichaziwe
Ingabe udidekile ngokuthi iyiphi ifomethi yamahluzo oyisebenzisayo lapho, noma uzibuza ukuthi impela umehluko ukhona phakathi kwe-JPEG , TIFF, PSD, BMP, PICT, ne-PNG?
Nazi ezinye iziqondiso jikelele:
- Uma izithombe zenzelwe iWeb noma iselula, sebenzisa i- JPEG , PNG, noma i-GIF.
- Uma izithombe zizovela ezincwadini eziphrintiwe, sebenzisa i-TIFF.
- Uma ufuna ukugcina inguqulo ehlala ihlelekile, khetha ifomethi yakho yefayela yesofthiwe. ezifana .PSD ye-Photoshop,
Nazi izincazelo ezimfushane zamafomethi wefrikhthi ejwayelekile, enezixhumanisi ozolandela ngolwazi oluthe xaxa:
Nini ukusebenzisa i-JPEG
I-Joint Photographic Experts Group (i-JPEG noma i-JPG) ingcono kakhulu ezithombeni uma udinga ukugcina usayizi wefayili encane futhi ungakhathazeki ukuyeka ikhwalithi ethile ngokuncishiswa okukhulu kwesayizi. Ifayela liba lincane kanjani? I-JPEG ibhekwa njengokuthi "ilahlekile". Ngamazwi alula, uma ifayela le-JPEG lidalwa i-compressor ibheka isithombe, iveza izindawo zombala ovamile futhi isebenzise esikhundleni sayo. I-upshot yimibala engabhekwa njengayo evamile "ilahlekile," ngakho inani lemininingwane yombala esithombeni liyancipha futhi okunciphisa usayizi wefayela.
Uma ifayela le-JPG lidalwa uvame ukucelwa ukuba usethe inani lekhwalithi efana ne-Photoshop Image ongakhethayo enamanani ukusuka ku-0 kuya ku-12. Noma yini engaphansi kwe-5 cishe iyoholela ekufanekeni kwesithombe esixilisiwe ngoba ulwazi oluningi luphonswa ukuze unciphise usayizi wefayela. Noma yini phakathi kuka-8 no-12 ibhekwa njengomkhuba omuhle kakhulu.
I-JPEG ayihambisani nemifanekiso enombhalo, amabhlogo amakhulu ombala, noma ubujamo obulula ngoba imigqa ekhishwayo izofiphaza futhi imibala ingashintsha. I-JPEG kuphela inika okukhethwa kukho okuyisisekelo, isisekelo esilungisiwe, noma i-Progressive.
- Isisekelo (Standard) - Le fomethi ye-JPEG iyabonwa yizo zonke iziphequluli zeWebhu.
- Isisekelo esilungisiwe - Le ndlela yefomethi ye-JPEG inikeza umbala olungiselelwe nokucindezelwa okungcono kangcono. Ixhaswa yizo zonke iziphequluli zesimanje kodwa ayisekelwa yiziphequluli zewebhu kakhulu kakhulu. Kungcono kakhulu ukuthi ukhethe amafayela we-JPEG namuhla.
- Okuqhubekayo - Idala ifayela le-JPEG elibonisa kancane kancane njengoba lilandwa, liqala ukuvimbela, futhi lizocaca kancane kancane njengoba lilandwa. Akukwenzi ukuthi isithombe silayishe noma sisheshe kangakanani, kodwa singanikeza isivinini esingaqondakali kusukela isithombe se-blocky silayishwa ngaso leso sikhathi ngokuxhumeka okuncane. Nginingi labasebenzisi be-intanethi ekuxhumaneni okusheshayo okusheshayo namuhla, i-Progressive JPEG ayifuni ukusetshenziswa.
Nini ukusebenzisa i-TIFF
I-TIFF (Umake ifomethi yefayela lesithombe) inhle kunoma yiluphi uhlobo lwe- bitmap (okusekelwe kumaphikseli) okufakwe ukuphrinta ngoba le fomethi isebenzisa umbala we-CMYK. I-TIFF ikhiqiza amafayela amakhulu ngenxa yesinqumo esivamile sika-300 ppi ngaphandle kokulahlekelwa kwekhwalithi. I-TIFF nayo igcina izendlalelo, u-alpha obala, nezinye izici ezikhethekile uma zilondolozwe kusuka ku-Photoshop. Uhlobo lwolwazi oluthe xaxa olulondolozwe ngamafayela we-TIFF luhlukahluka kuma-versions we-Photoshop, ngakho-ke thintana nosizo lwe-Photoshop ngolwazi oluthe xaxa.
Nini ukusebenzisa i-PSD
I-PSD iyifomethi yomdabu ye-Photoshop. Sebenzisa i-PSD uma udinga ukulondoloza izendlalelo, ukukhanya, izendlalelo zokulungisa, amaskingi, ukuchofoza izitayela, izitayela zesendlalelo, izindlela zokuxuba, umbhalo we-vector, nokubunjwa, njll Hlala ukhumbule, le mibhalo ingavulwa kuphela ku-Photoshop nakuba abanye abahleli bezithombe uzobavula.
Nini ukusebenzisa i-BMP
Sebenzisa i-BMP nganoma yiluphi uhlobo lwe-bitmap (esekelwe emaphoyiselini). Ama-BMP amafayela amakhulu, kodwa akukho ukulahlekelwa kwekhwalithi. I-BMP ayikho izinzuzo zangempela ngaphezu kwe-TIFF, ngaphandle kokuthi ungayisebenzisa iWindows wallpaper. Eqinisweni, i-BMP ingomunye walawo mafomethi wesithombe esele kusukela ezinsukwini zakudala zekhompyutha ihluzo futhi akuvamile ukuba isetshenziswe namhlanje. Lokhu kuchaza ukuthi kungani kuthiwa ngezinye izikhathi ngokuthi "ifomethi yefa".
Isikhathi sokusebenzisa i-PICT
I-PICT iyi-format endala, ye-Mac-bit kuphela ye-bitmap esetshenziselwa ukunikezela kabusha kwe-Quickdraw, Okufana ne-BMP ye-Windows, i-PICT ayisovumi ukusetshenziswa namuhla.
Nini ukusebenzisa i-PNG
Sebenzisa i-PNG uma udinga amasayizi amancane wefayela ngaphandle kokulahlekelwa ngekhwalithi. Amafayela we-PNG ngokuvamile amancane kunezithombe ze-TIFF. I-PNG iphinde isekele ukukhanya kwe-alpha (emaphethelweni athambile) futhi yasungulwa ukuba ibe ihluzo lewebhu le-GIF. Qaphela ukuthi uma ufuna ukugcina obala ngokugcwele, kuzodingeka ulondoloze ifayela lakho le-PNG njengo-PNG-24 hhayi iPNG-8. I-PNG-8 iyasiza ekunciphiseni usayizi wefayela wamafayela we-PNG uma ungadingi ukukhanya, kepha unemikhawulo efanayo yembala ye-palette njengamafayela we- GIF .
Ifomethi ye-PNG iphinde isetshenziswe ngokujwayelekile uma udala izithombe ze-iPhones ne-iPads. Vele uqaphele izithombe ezinganikeli konke okwenziwe kahle ngefomethi ye-png. Isizathu siyi-png isakhiwo esingenakulahlekelwa, okusho ukuthi kuncane kakhulu uma kukhona ukucindezelwa okusetshenziselwa isithombe se-png esiholela kumakhulu amafayela amakhulu kunama-cousin awo .jpg.
Nini ukusebenzisa i-GIF
Sebenzisa i-GIF yehluzo zeWebhu ezilula ezinemibala engama-256-. Amafayela we-GIF ahlale ehlelwa emibala engu-256 ehlukile noma engaphansi futhi enza amancane kakhulu, i -graphics-fast loading loading . I-GIF inhle kakhulu kubhokisini bewebhu, amashadi noma imidwebo, ukudweba okufana nomdwebo we-cartoon, amabhanela, kanye nezihloko zombhalo. I-GIF isetshenziselwa izithombe ezincane, ze-Compact Web. I-GIF akufanele isetshenziselwe ukusetshenziswa kwezithombe nakuba kukhona ukuvuselelwa kwezithombe ze-GIF kanye ne-GIF Izithombe ngenxa yokunyuka kwezindaba zeselula nezenhlalo.