S L R PHOTOGRAPHY GUI DE
S E P T E MBE R 201 4I SSUE
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LensFAQ ByTanyaPunt t i Wha tdoa l l t henumbe r sony ourc a me r al e nsr e f e rt oa ndwha tdot he yme a n? Que son1: Wha tdoe st hemmnumbe rwr ie nont hes i deofy ourl e nsr e f e rt o? T hemmnumbe rr e f e r st ot hef oc a l l e ng t h. T hi si st hel e ng t hordi s t a nc ef r omt hef r ont oft hel e nst ot hec a me r a ' ss e ns or . T hef oc a l l e ng t hi soneoft hemos ti mpor t a nt c ons i de r a onsaphot og r a phe rne e dst ot a k ei nt oa c c ountwhe nbuy i ngane wl e nsa s i twi l l de t e r mi net hes t y l eofphot og r a pht ha tc a nbet a k e n. T hel owe rt hemmnumbe r( f ore x a mpl e17mm)t hewi de rt hea ng l eofv i e w. He nc e wi dea ng l el e ns e sa r epe r f e c tf orl a nds c a pephot og r a phy . L a r g emmnumbe r sl i k e 200mmor300mmpr ov i deama g ni fie dt e l e phot ov i e w. Pe r f e c tf ora ni ma l phot og r a phywhe r ey oumi g htwa ntt oz oomi nonabi r dy e tnotbet ooc l os ea nd s c a r ei ta wa y . I fy ourl e nsha sonemmnumbe r , f ore x a mpl e50mm, t hi sme a nsi ti sanonz ooml e ns . Ra t he rt ha nz oomi ngt hel e nsi na ndout , y oune e dt omov ey ourf e e ti ns t e a d. Que son2: Wha tdoe st her a onumbe rme a n?F ore x a mpl e1: 4-5. 6 T hi snumbe rr e f e r st ot hewi de s ta pe r t ur ea v a i l a bl ef ort ha tl e ns . L e t ss a yy ouowna Ca nonE F S1785mmf / 45. 6l e ns . T her a onumbe rbe i ng45. 6. Wha tt hi sme a nsi sa t i t swi de s tf oc a l l e ng t h17mm, t hel owe s ta pe r t ur enumbe rt ha tc a nbes e ti sF 4. Att he ot he re ndoft hef oc a l l e ng t ha t85mm, t hel owe s ta pe r t ur enumbe ra v a i l a bl ei sF 5. 6. T hi si sa l s ot her e a s onwhyi fy ous e tt hel owe s ta pe r t ur enumbe ra v a i l a bl ea ndy ou z oomy ourl e nsoutt ot hel ong e s tl e ng t h, t hec a me r awi l l a ut oma c a l l yr e s e tt he a pe r t ur et os ui t . Que son3: Wha tdoe sØ58mmme a n? I fy ous e eanumbe rt ha ts t a r t swi t ht hec ha r a c t e rs y mbol Ø, f ore x a mpl eØ58mm wr ie nony ourl e ns , i ts i mpl yme a nst ha tas c r e wonfil t e rt ha ti s58mmi ndi a me t e r wi l l fitt hi spa rc ul a rl e ns .
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Di dyouknowouronl i nephot ogr aphycour s e nowcomeswi t hdownl oadabl echeats heet s ? " I fyouhaven' tt akenadvant ageofpr i nt i ngt hecheats heet s , Is t r ongl ys ugges tyout aket i met odos o. Thes eal onear ewor t h t hepr i ceoft hecour s e. " ~JohnSmi t h( s t udent ) Checkoutouronl i nephot ogr aphycour s eoverat ht t p: / / www. s l r phot ogr aphygui de. com/ onl i necour s es . s ht ml