{"id":505522,"date":"2025-11-14T12:15:44","date_gmt":"2025-11-14T05:15:44","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=505522"},"modified":"2025-11-14T12:15:44","modified_gmt":"2025-11-14T05:15:44","slug":"lens-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/lens-la-gi\/","title":{"rendered":"Lens m\u00e1y \u1ea3nh l\u00e0 g\u00ec? C\u00e1c lo\u1ea1i lens v\u00e0 c\u00e1ch ch\u1ecdn lens ph\u00f9 h\u1ee3p cho m\u00e1y \u1ea3nh"},"content":{"rendered":"

Lens m\u00e1y \u1ea3nh l\u00e0 b\u1ed9 ph\u1eadn quan tr\u1ecdng, quy\u1ebft \u0111\u1ecbnh c\u00e1ch \u00e1nh s\u00e1ng \u0111i v\u00e0o m\u00e1y v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh cu\u1ed1i c\u00f9ng. Khi t\u00ecm hi\u1ec3u v\u1ec1 <\/span>lens l\u00e0 g\u00ec<\/b>, b\u1ea1n s\u1ebd th\u1ea5y \u0111\u00e2y ch\u00ednh l\u00e0 \u201ccon m\u1eaft\u201d c\u1ee7a m\u00e1y \u1ea3nh, gi\u00fap ghi l\u1ea1i m\u1ecdi kho\u1ea3nh kh\u1eafc v\u1edbi \u0111\u1ed9 s\u1eafc n\u00e9t v\u00e0 chi\u1ec1u s\u00e2u \u1ea5n t\u01b0\u1ee3ng. Sau \u0111\u00e2y, Ho\u00e0ng H\u00e0 Mobile<\/strong> s\u1ebd t\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c v\u1ec1 lens m\u00e1y \u1ea3nh, c\u00e1c lo\u1ea1i lens ph\u1ed5 bi\u1ebfn v\u00e0 kinh nghi\u1ec7m l\u1ef1a ch\u1ecdn lens t\u1ed1i \u01b0u cho m\u00e1y \u1ea3nh c\u1ee7a b\u1ea1n.<\/span><\/p>\n

Lens l\u00e0 g\u00ec?<\/span><\/h2>\n

Lens, hay c\u00f2n g\u1ecdi l\u00e0 \u1ed1ng k\u00ednh m\u00e1y \u1ea3nh, l\u00e0 b\u1ed9 ph\u1eadn quan tr\u1ecdng c\u1ee7a m\u1ed9t chi\u1ebfc m\u00e1y \u1ea3nh, \u0111\u00f3ng vai tr\u00f2 nh\u01b0 \u201c\u0111\u00f4i m\u1eaft\u201d gi\u00fap m\u00e1y thu nh\u1eadn \u00e1nh s\u00e1ng t\u1eeb c\u1ea3nh v\u1eadt v\u00e0 h\u1ed9i t\u1ee5 v\u00e0o c\u1ea3m bi\u1ebfn ho\u1eb7c phim. N\u1ebfu th\u00e2n m\u00e1y \u1ea3nh \u0111\u01b0\u1ee3c v\u00ed nh\u01b0 c\u01a1 th\u1ec3, th\u00ec lens ch\u00ednh l\u00e0 m\u1eaft, quy\u1ebft \u0111\u1ecbnh c\u00e1ch \u00e1nh s\u00e1ng \u0111i v\u00e0o v\u00e0 c\u00e1ch h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c ghi l\u1ea1i. M\u1ed9t chi\u1ebfc lens ch\u1ea5t l\u01b0\u1ee3ng s\u1ebd \u0111\u1ea3m b\u1ea3o h\u00ecnh \u1ea3nh r\u00f5 r\u00e0ng, \u00edt bi\u1ebfn d\u1ea1ng v\u00e0 m\u00e0u s\u1eafc trung th\u1ef1c, \u0111\u1ed3ng th\u1eddi t\u1ea1o ra c\u00e1c hi\u1ec7u \u1ee9ng \u0111\u1eb7c bi\u1ec7t nh\u01b0 x\u00f3a ph\u00f4ng hay hi\u1ec7u \u1ee9ng chi\u1ec1u s\u00e2u.<\/span><\/p>\n

\"lens-la-gi-1\"<\/picture><\/p>\n

\u1ed0ng k\u00ednh c\u00f3 nhi\u1ec1u lo\u1ea1i, t\u1eeb \u1ed1ng k\u00ednh g\u1eafn c\u1ed1 \u0111\u1ecbnh tr\u00ean m\u00e1y film c\u0169 \u0111\u1ebfn nh\u1eefng lens hi\u1ec7n \u0111\u1ea1i cho DSLR v\u00e0 mirrorless. Lens kh\u00f4ng ch\u1ec9 t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch ng\u01b0\u1eddi ch\u1ee5p s\u00e1ng t\u1ea1o v\u00e0 ki\u1ec3m so\u00e1t c\u1ea3nh v\u1eadt. Lens c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng thay \u0111\u1ed5i ti\u00eau c\u1ef1, kh\u1ea9u \u0111\u1ed9 v\u00e0 t\u00edch h\u1ee3p c\u00e1c t\u00ednh n\u0103ng nh\u01b0 l\u1ea5y n\u00e9t t\u1ef1 \u0111\u1ed9ng, ch\u1ed1ng rung ho\u1eb7c l\u1ea5y n\u00e9t th\u1ee7 c\u00f4ng, gi\u00fap ng\u01b0\u1eddi d\u00f9ng linh ho\u1ea1t trong m\u1ecdi \u0111i\u1ec1u ki\u1ec7n ch\u1ee5p.<\/span><\/p>\n

C\u00e1c lo\u1ea1i lens m\u00e1y \u1ea3nh tr\u00ean th\u1ecb tr\u01b0\u1eddng<\/span><\/h2>\n

Tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay c\u00f3 r\u1ea5t nhi\u1ec1u lo\u1ea1i lens m\u00e1y \u1ea3nh v\u1edbi thi\u1ebft k\u1ebf, ti\u00eau c\u1ef1 v\u00e0 ch\u1ee9c n\u0103ng kh\u00e1c nhau, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u \u0111a d\u1ea1ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng t\u1eeb nghi\u1ec7p d\u01b0 \u0111\u1ebfn chuy\u00ean nghi\u1ec7p. Tr\u01b0\u1edbc khi t\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 t\u1eebng lo\u1ea1i \u1ed1ng k\u00ednh, b\u1ea1n n\u00ean n\u1eafm r\u00f5 <\/span>lens l\u00e0 g\u00ec<\/b> \u0111\u1ec3 hi\u1ec3u vai tr\u00f2 v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y trong vi\u1ec7c t\u1ea1o n\u00ean m\u1ed9t b\u1ee9c \u1ea3nh ch\u1ea5t l\u01b0\u1ee3ng.<\/span><\/p>\n

\u1ed0ng k\u00ednh m\u1ed9t ti\u00eau c\u1ef1<\/span><\/h3>\n

\u1ed0ng k\u00ednh m\u1ed9t ti\u00eau c\u1ef1, hay c\u00f2n g\u1ecdi l\u00e0 prime lens, l\u00e0 lo\u1ea1i \u1ed1ng k\u00ednh c\u00f3 ti\u00eau c\u1ef1 c\u1ed1 \u0111\u1ecbnh, v\u00ed d\u1ee5 nh\u01b0 35mm, 50mm hay 85mm. \u0110i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a lo\u1ea1i lens n\u00e0y l\u00e0 kh\u1ea9u \u0111\u1ed9 l\u1edbn, cho ph\u00e9p thu nhi\u1ec1u \u00e1nh s\u00e1ng, \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng y\u1ebfu ho\u1eb7c ch\u1ee5p ban \u0111\u00eam. Prime lens c\u0169ng n\u1ed5i ti\u1ebfng v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh s\u1eafc n\u00e9t, \u00edt bi\u1ebfn d\u1ea1ng so v\u1edbi lens zoom, \u0111\u1ed3ng th\u1eddi gi\u00fap t\u1ea1o hi\u1ec7u \u1ee9ng bokeh \u0111\u1eb9p m\u1eaft, l\u00e0m n\u1ed5i b\u1eadt ch\u1ee7 th\u1ec3 v\u00e0 l\u00e0m m\u1edd n\u1ec1n m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean.<\/span><\/p>\n

\"lens-la-gi-2\"<\/picture><\/p>\n

M\u1ed9t \u01b0u \u0111i\u1ec3m kh\u00e1c c\u1ee7a prime lens l\u00e0 nh\u1eb9 v\u00e0 g\u1ecdn, thu\u1eadn ti\u1ec7n mang theo khi \u0111i ch\u1ee5p ngo\u00e0i tr\u1eddi ho\u1eb7c du l\u1ecbch. Tuy nhi\u00ean, v\u00ec ti\u00eau c\u1ef1 c\u1ed1 \u0111\u1ecbnh n\u00ean ng\u01b0\u1eddi ch\u1ee5p ph\u1ea3i di chuy\u1ec3n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh khung h\u00ecnh, \u0111i\u1ec1u n\u00e0y \u0111\u00f4i khi y\u00eau c\u1ea7u k\u1ef9 n\u0103ng b\u1ed1 c\u1ee5c t\u1ed1t. Prime lens th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1c nhi\u1ebfp \u1ea3nh gia chuy\u00ean nghi\u1ec7p v\u00e0 ng\u01b0\u1eddi m\u1edbi h\u1ecdc y\u00eau th\u00edch nh\u1edd kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t \u00e1nh s\u00e1ng, \u0111\u1ed9 s\u00e2u tr\u01b0\u1eddng \u1ea3nh v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh, \u0111\u1ed3ng th\u1eddi gi\u00e1 c\u1ea3 c\u0169ng \u0111a d\u1ea1ng, t\u1eeb c\u00e1c lo\u1ea1i ph\u1ed5 th\u00f4ng \u0111\u1ebfn cao c\u1ea5p.<\/span><\/p>\n

Vi\u1ec7c s\u1eed d\u1ee5ng prime lens c\u00f2n gi\u00fap ng\u01b0\u1eddi ch\u1ee5p ph\u00e1t tri\u1ec3n m\u1eaft nh\u00ecn ngh\u1ec7 thu\u1eadt, h\u1ecdc c\u00e1ch \u0111\u1ecbnh h\u00ecnh khung c\u1ea3nh v\u00e0 b\u1ed1 c\u1ee5c t\u1eeb g\u00f3c c\u1ed1 \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y khi\u1ebfn cho c\u00e1c h\u00e3ng n\u1ed5i ti\u1ebfng th\u01b0\u1eddng cung c\u1ea5p nhi\u1ec1u phi\u00ean b\u1ea3n prime lens v\u1edbi kh\u1ea9u \u0111\u1ed9 kh\u00e1c nhau, t\u1eeb f\/1.8 \u0111\u1ebfn f\/1.2, ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng nhu c\u1ea7u s\u00e1ng t\u1ea1o ri\u00eang bi\u1ec7t.<\/span><\/p>\n

\u1ed0ng k\u00ednh zoom<\/span><\/h3>\n

Kh\u00e1c v\u1edbi prime lens, \u1ed1ng k\u00ednh zoom c\u00f3 kh\u1ea3 n\u0103ng thay \u0111\u1ed5i ti\u00eau c\u1ef1, v\u00ed d\u1ee5 24\u201370mm hay 70\u2013200mm, gi\u00fap ng\u01b0\u1eddi ch\u1ee5p linh ho\u1ea1t trong vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh khung h\u00ecnh m\u00e0 kh\u00f4ng c\u1ea7n di chuy\u1ec3n nhi\u1ec1u. N\u1ebfu b\u1ea1n m\u1edbi t\u00ecm hi\u1ec3u <\/span>lens l\u00e0 g\u00ec<\/b>, th\u00ec zoom lens ch\u00ednh l\u00e0 lo\u1ea1i \u1ed1ng k\u00ednh cho ph\u00e9p thay \u0111\u1ed5i g\u00f3c nh\u00ecn m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng, ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u phong c\u00e1ch ch\u1ee5p kh\u00e1c nhau. Zoom lens \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c t\u00ecnh hu\u1ed1ng ch\u1ee5p \u0111a d\u1ea1ng, t\u1eeb phong c\u1ea3nh, s\u1ef1 ki\u1ec7n, \u0111\u1ebfn th\u1ec3 thao hay ch\u1ee5p ngo\u00e0i tr\u1eddi.\u00a0<\/span><\/p>\n

\"lens-la-gi-3\"<\/picture><\/p>\n

\u0110i\u1ec3m m\u1ea1nh c\u1ee7a zoom lens l\u00e0 t\u00ednh \u0111a d\u1ee5ng, gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng lens c\u1ea7n mang theo, ti\u1ebft ki\u1ec7m th\u1eddi gian thay lens v\u00e0 thu\u1eadn ti\u1ec7n cho c\u00e1c chuy\u1ebfn \u0111i xa. Tuy nhi\u00ean, lens zoom th\u01b0\u1eddng n\u1eb7ng h\u01a1n v\u00e0 c\u00f3 kh\u1ea9u \u0111\u1ed9 nh\u1ecf h\u01a1n prime lens, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ee5p trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng y\u1ebfu v\u00e0 t\u1ea1o hi\u1ec7u \u1ee9ng bokeh k\u00e9m h\u01a1n. M\u1ed9t s\u1ed1 lens zoom c\u0169ng d\u1ec5 g\u1eb7p hi\u1ec7n t\u01b0\u1ee3ng quang h\u1ecdc nh\u01b0 bi\u1ebfn d\u1ea1ng ho\u1eb7c quang sai m\u00e0u, nh\u01b0ng c\u00e1c h\u00e3ng l\u1edbn \u0111\u00e3 c\u1ea3i ti\u1ebfn \u0111\u1ec3 gi\u1ea3m thi\u1ec3u v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/span><\/p>\n

Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn zoom lens theo nhu c\u1ea7u: g\u00f3c r\u1ed9ng (wide zoom) 16\u201335mm cho phong c\u1ea3nh, ti\u00eau chu\u1ea9n (standard zoom) 24\u201370mm cho \u0111a d\u1ee5ng, hay telephoto zoom 70\u2013200mm cho ch\u1ee5p xa nh\u01b0 th\u1ec3 thao, \u0111\u1ed9ng v\u1eadt. \u0110\u1ed3ng th\u1eddi, zoom lens c\u0169ng th\u00edch h\u1ee3p cho c\u1ea3 nhi\u1ebfp \u1ea3nh gia chuy\u00ean nghi\u1ec7p l\u1eabn ng\u01b0\u1eddi m\u1edbi, nh\u1edd s\u1ef1 linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u1edbi nhi\u1ec1u t\u00ecnh hu\u1ed1ng.<\/span><\/p>\n

\u1ed0ng k\u00ednh g\u00f3c r\u1ed9ng<\/span><\/h3>\n

\u1ed0ng k\u00ednh g\u00f3c r\u1ed9ng c\u00f3 ti\u00eau c\u1ef1 nh\u1ecf, th\u01b0\u1eddng d\u01b0\u1edbi 35mm, gi\u00fap m\u1edf r\u1ed9ng g\u00f3c nh\u00ecn v\u00e0 ghi l\u1ea1i nhi\u1ec1u chi ti\u1ebft trong khung h\u00ecnh. N\u1ebfu b\u1ea1n \u0111ang t\u00ecm hi\u1ec3u <\/span>lens l\u00e0 g\u00ec<\/b> v\u00e0 lo\u1ea1i n\u00e0o ph\u00f9 h\u1ee3p \u0111\u1ec3 ch\u1ee5p kh\u00f4ng gian l\u1edbn, th\u00ec lens g\u00f3c r\u1ed9ng ch\u00ednh l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c th\u1ec3 lo\u1ea1i nh\u01b0 phong c\u1ea3nh, ki\u1ebfn tr\u00fac, n\u1ed9i th\u1ea5t hay nh\u1eefng n\u01a1i c\u00f3 kh\u00f4ng gian ch\u1eadt h\u1eb9p. Nh\u1edd \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y, \u1ed1ng k\u00ednh c\u00f3 th\u1ec3 t\u1ea1o ra c\u1ea3m gi\u00e1c kh\u00f4ng gian s\u00e2u h\u01a1n, mang \u0111\u1ebfn nh\u1eefng b\u1ee9c \u1ea3nh s\u1ed1ng \u0111\u1ed9ng, tho\u00e1ng \u0111\u00e3ng v\u00e0 tr\u00e0n \u0111\u1ea7y chi\u1ec1u s\u00e2u.<\/span><\/p>\n

\"lens-la-gi-4\"<\/picture><\/p>\n

Lens g\u00f3c r\u1ed9ng c\u00f3 th\u1ec3 g\u1eb7p hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng h\u00ecnh \u1ea3nh, nh\u01b0 barrel distortion, khi\u1ebfn c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng tr\u1edf n\u00ean cong, nh\u01b0ng v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt ch\u1ec9nh s\u1eeda h\u1eadu k\u1ef3 ho\u1eb7c lens cao c\u1ea5p, v\u1ea5n \u0111\u1ec1 n\u00e0y c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t t\u1ed1t. Lo\u1ea1i lens n\u00e0y th\u01b0\u1eddng c\u00f3 kh\u1ea9u \u0111\u1ed9 v\u1eeba ph\u1ea3i, nh\u01b0ng v\u1eabn \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 \u00e1nh s\u00e1ng \u0111\u1ec3 ch\u1ee5p trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau.<\/span><\/p>\n

\u1ed0ng k\u00ednh telephoto<\/span><\/h3>\n

\u1ed0ng k\u00ednh telephoto c\u00f3 ti\u00eau c\u1ef1 d\u00e0i, th\u01b0\u1eddng t\u1eeb 70mm tr\u1edf l\u00ean, cho ph\u00e9p ch\u1ee5p c\u00e1c v\u1eadt th\u1ec3 \u1edf kho\u1ea3ng c\u00e1ch xa m\u00e0 v\u1eabn gi\u1eef chi ti\u1ebft r\u00f5 n\u00e9t. Lens telephoto ph\u1ed5 bi\u1ebfn trong ch\u1ee5p th\u1ec3 thao, \u0111\u1ed9ng v\u1eadt hoang d\u00e3, s\u1ef1 ki\u1ec7n ho\u1eb7c b\u1ea5t k\u1ef3 t\u00ecnh hu\u1ed1ng n\u00e0o m\u00e0 ng\u01b0\u1eddi ch\u1ee5p kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn g\u1ea7n ch\u1ee7 th\u1ec3. \u0110i\u1ec3m m\u1ea1nh c\u1ee7a lens n\u00e0y l\u00e0 kh\u1ea3 n\u0103ng c\u00f4 l\u1eadp ch\u1ee7 th\u1ec3, t\u1ea1o bokeh \u0111\u1eb9p v\u00e0 l\u00e0m m\u1edd n\u1ec1n, nh\u1ea5n m\u1ea1nh s\u1ef1 t\u1eadp trung v\u00e0o v\u1eadt th\u1ec3 ch\u00ednh.<\/span><\/p>\n

\"lens-la-gi-5\"<\/picture><\/p>\n

Telephoto lens th\u01b0\u1eddng n\u1eb7ng v\u00e0 d\u00e0i, \u0111\u00f4i khi c\u1ea7n ch\u00e2n m\u00e1y \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh, nh\u01b0ng c\u00e1c phi\u00ean b\u1ea3n c\u00f3 t\u00ednh n\u0103ng \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh (IS, VR, OSS) gi\u00fap gi\u1ea3m rung khi c\u1ea7m tay. Lens telephoto c\u0169ng d\u1ec5 b\u1ecb c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng quang h\u1ecdc nh\u01b0 chromatic aberration, nh\u01b0ng c\u00e1c d\u00f2ng cao c\u1ea5p th\u01b0\u1eddng trang b\u1ecb th\u1ea5u k\u00ednh phi c\u1ea7u v\u00e0 l\u1edbp ph\u1ee7 ch\u1ed1ng ph\u1ea3n x\u1ea1 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u.<\/span><\/p>\n

\u1ed0ng k\u00ednh macro<\/span><\/h3>\n

Macro lens l\u00e0 lo\u1ea1i \u1ed1ng k\u00ednh chuy\u00ean d\u1ee5ng cho ch\u1ee5p c\u1eadn c\u1ea3nh, cho ph\u00e9p ghi l\u1ea1i chi ti\u1ebft c\u1ef1c nh\u1ecf c\u1ee7a v\u1eadt th\u1ec3, t\u1eeb hoa l\u00e1, c\u00f4n tr\u00f9ng \u0111\u1ebfn s\u1ea3n ph\u1ea9m nh\u1ecf. N\u1ebfu b\u1ea1n \u0111ang t\u00ecm hi\u1ec3u <\/span>lens l\u00e0 g\u00ec<\/b> v\u00e0 mu\u1ed1n kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi vi m\u00f4 qua \u1ed1ng k\u00ednh, th\u00ec lens macro ch\u00ednh l\u00e0 l\u1ef1a ch\u1ecdn ho\u00e0n h\u1ea3o. V\u1edbi ti\u00eau c\u1ef1 th\u01b0\u1eddng t\u1eeb 50\u2013200mm v\u00e0 kh\u1ea3 n\u0103ng l\u1ea5y n\u00e9t \u1edf kho\u1ea3ng c\u00e1ch r\u1ea5t g\u1ea7n, lo\u1ea1i lens n\u00e0y gi\u00fap th\u1ec3 hi\u1ec7n \u0111\u1ed9 s\u1eafc n\u00e9t, chi ti\u1ebft v\u00e0 chi\u1ec1u s\u00e2u t\u1ed1i \u0111a m\u00e0 c\u00e1c \u1ed1ng k\u00ednh th\u00f4ng th\u01b0\u1eddng kh\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c.<\/span><\/p>\n

\"lens-la-gi-5\"<\/picture><\/p>\n

M\u1ed9t \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a macro lens l\u00e0 kh\u1ea3 n\u0103ng t\u1ea1o bokeh m\u1ecbn \u1edf kho\u1ea3ng c\u00e1ch g\u1ea7n, l\u00e0m n\u1ed5i b\u1eadt ch\u1ee7 th\u1ec3 v\u00e0 t\u1ea1o hi\u1ec7u \u1ee9ng th\u1ecb gi\u00e1c \u1ea5n t\u01b0\u1ee3ng. Macro lens c\u0169ng h\u1ed7 tr\u1ee3 AF v\u00e0 MF, gi\u00fap ng\u01b0\u1eddi ch\u1ee5p linh ho\u1ea1t ki\u1ec3m so\u00e1t chi ti\u1ebft l\u1ea5y n\u00e9t. Tuy nhi\u00ean, v\u00ec ti\u00eau c\u1ef1 g\u1ea7n n\u00ean ng\u01b0\u1eddi ch\u1ee5p c\u1ea7n ch\u00fa \u00fd \u00e1nh s\u00e1ng v\u00e0 \u0111\u1ed9 rung m\u00e1y, \u0111\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 c\u1ea7n ch\u00e2n m\u00e1y ho\u1eb7c \u0111\u00e8n b\u1ed5 sung \u0111\u1ec3 \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t nh\u1ea5t.<\/span><\/p>\n

Nh\u1eefng \u0111i\u1ec1u c\u1ea7n bi\u1ebft v\u1ec1 lens m\u00e1y \u1ea3nh<\/span><\/h2>\n

Tr\u01b0\u1edbc khi \u0111\u1ea7u t\u01b0 v\u00e0o m\u1ed9t chi\u1ebfc lens, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c ch\u1ee9c n\u0103ng, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t c\u1ee7a \u1ed1ng k\u00ednh.\u00a0<\/span><\/p>\n

L\u1ea5y n\u00e9t t\u1ef1 \u0111\u1ed9ng (Autofocus \u2013 AF) v\u00e0 th\u1ee7 c\u00f4ng (Manual Focus \u2013 MF)<\/span><\/h3>\n

L\u1ea5y n\u00e9t l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 s\u1eafc n\u00e9t c\u1ee7a b\u1ee9c \u1ea3nh. H\u1ea7u h\u1ebft lens hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u h\u1ed7 tr\u1ee3 AF, gi\u00fap m\u00e1y t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh kho\u1ea3ng c\u00e1ch l\u1ea5y n\u00e9t nhanh ch\u00f3ng v\u00e0 ch\u00ednh x\u00e1c, \u0111\u1eb7c bi\u1ec7t trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng t\u1ed1t ho\u1eb7c c\u1ea3nh v\u1eadt c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao. Tuy nhi\u00ean, trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u00e1nh s\u00e1ng y\u1ebfu, c\u1ea3nh thi\u1ebfu t\u01b0\u01a1ng ph\u1ea3n ho\u1eb7c ch\u1ee5p macro, AF c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng hi\u1ec7u qu\u1ea3. Khi \u0111\u00f3, chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 MF cho ph\u00e9p ng\u01b0\u1eddi ch\u1ee5p ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c v\u00f9ng n\u00e9t, \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/span><\/p>\n

\"lens-la-gi-7\"<\/picture><\/p>\n

MF c\u00f2n gi\u00fap ng\u01b0\u1eddi ch\u1ee5p s\u00e1ng t\u1ea1o h\u01a1n, \u0111i\u1ec1u ch\u1ec9nh l\u1ea5y n\u00e9t theo \u00fd mu\u1ed1n \u0111\u1ec3 t\u1ea1o hi\u1ec7u \u1ee9ng bokeh ho\u1eb7c l\u00e0m n\u1ed5i b\u1eadt c\u00e1c chi ti\u1ebft quan tr\u1ecdng. Nhi\u1ec1u lens c\u00f3 c\u00f4ng t\u1eafc AF\/MF tr\u1ef1c ti\u1ebfp tr\u00ean th\u00e2n lens, thu\u1eadn ti\u1ec7n chuy\u1ec3n \u0111\u1ed5i nhanh ch\u00f3ng trong qu\u00e1 tr\u00ecnh ch\u1ee5p.\u00a0<\/span><\/p>\n

\u1ed4n \u0111\u1ecbnh h\u00ecnh \u1ea3nh<\/span><\/h3>\n

IS, VR, ho\u1eb7c OSS l\u00e0 nh\u1eefng t\u00ednh n\u0103ng gi\u00fap gi\u1ea3m rung m\u00e1y, \u0111\u1eb7c bi\u1ec7t khi ch\u1ee5p v\u1edbi lens tele ho\u1eb7c t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp ch\u1eadm. N\u1ebfu b\u1ea1n \u0111ang t\u00ecm hi\u1ec3u <\/span>lens l\u00e0 g\u00ec<\/b> v\u00e0 c\u00e1ch ch\u1ecdn \u1ed1ng k\u00ednh ph\u00f9 h\u1ee3p, th\u00ec vi\u1ec7c hi\u1ec3u v\u1ec1 c\u00f4ng ngh\u1ec7 \u1ed5n \u0111\u1ecbnh h\u00ecnh \u1ea3nh l\u00e0 r\u1ea5t quan tr\u1ecdng. Nh\u1eefng \u1ed1ng k\u00ednh c\u00f3 t\u00ednh n\u0103ng ch\u1ed1ng rung cho ph\u00e9p ng\u01b0\u1eddi ch\u1ee5p c\u1ea7m m\u00e1y l\u00e2u h\u01a1n m\u00e0 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c h\u00ecnh \u1ea3nh s\u1eafc n\u00e9t, gi\u1ea3m nguy c\u01a1 m\u1edd do chuy\u1ec3n \u0111\u1ed9ng.<\/span><\/p>\n

\"lens-la-gi-8\"<\/picture><\/p>\n

C\u00e1c lens hi\u1ec7n \u0111\u1ea1i t\u00edch h\u1ee3p IS c\u00f2n c\u00f3 nhi\u1ec1u ch\u1ebf \u0111\u1ed9, v\u00ed d\u1ee5 ch\u1ebf \u0111\u1ed9 ch\u1ec9 \u1ed5n \u0111\u1ecbnh cho \u1ea3nh t\u0129nh, ho\u1eb7c ch\u1ebf \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh theo chuy\u1ec3n \u0111\u1ed9ng ngang\/d\u1ecdc, gi\u00fap linh ho\u1ea1t trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng. V\u00e0 vi\u1ec7c b\u1ea1n l\u1ef1a ch\u1ecdn lens c\u00f3 IS ph\u00f9 h\u1ee3p s\u1ebd n\u00e2ng cao kh\u1ea3 n\u0103ng s\u00e1ng t\u1ea1o, \u0111\u1eb7c bi\u1ec7t khi ch\u1ee5p ngo\u00e0i tr\u1eddi ho\u1eb7c trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng kh\u00f3 ki\u1ec3m so\u00e1t.<\/span><\/p>\n

Kh\u1ea9u \u0111\u1ed9 v\u00e0 f\u2011stop<\/span><\/h3>\n

Kh\u1ea9u \u0111\u1ed9 quy\u1ebft \u0111\u1ecbnh l\u01b0\u1ee3ng \u00e1nh s\u00e1ng \u0111i v\u00e0o m\u00e1y v\u00e0 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 s\u00e2u tr\u01b0\u1eddng \u1ea3nh. Khi t\u00ecm hi\u1ec3u <\/span>lens l\u00e0 g\u00ec<\/b>, b\u1ea1n s\u1ebd th\u1ea5y kh\u1ea9u \u0111\u1ed9 l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t c\u1ee7a \u1ed1ng k\u00ednh, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 s\u00e1ng, \u0111\u1ed9 n\u00e9t v\u00e0 hi\u1ec7u \u1ee9ng h\u00ecnh \u1ea3nh t\u1ed5ng th\u1ec3.\u00a0<\/span><\/p>\n

S\u1ed1 f th\u1ea5p t\u01b0\u01a1ng \u1ee9ng v\u1edbi kh\u1ea9u m\u1edf l\u1edbn, cho ph\u00e9p \u00e1nh s\u00e1ng \u0111i v\u00e0o nhi\u1ec1u h\u01a1n, gi\u00fap ch\u1ee5p t\u1ed1t trong \u0111i\u1ec1u ki\u1ec7n thi\u1ebfu s\u00e1ng v\u00e0 t\u1ea1o hi\u1ec7u \u1ee9ng n\u1ec1n m\u1edd (bokeh) \u0111\u1eb9p m\u1eaft. Ng\u01b0\u1ee3c l\u1ea1i, f cao gi\u00fap t\u0103ng \u0111\u1ed9 s\u00e2u tr\u01b0\u1eddng \u1ea3nh, gi\u00fap t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong khung h\u00ecnh \u0111\u1ec1u s\u1eafc n\u00e9t v\u00e0 r\u00f5 r\u00e0ng h\u01a1n.<\/span><\/p>\n

\"lens-la-gi-9\"<\/picture><\/p>\n

Lens \u201cnhanh\u201d v\u1edbi f\/1.8, f\/2.0 ho\u1eb7c f\/2.8 th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau th\u00edch v\u00ec kh\u1ea3 n\u0103ng thu s\u00e1ng t\u1ed1t v\u00e0 t\u1ea1o hi\u1ec7u \u1ee9ng ngh\u1ec7 thu\u1eadt. Ch\u1ecdn lens v\u1edbi kh\u1ea9u \u0111\u1ed9 ph\u00f9 h\u1ee3p t\u00f9y thu\u1ed9c v\u00e0o m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng: ch\u1ee5p ch\u00e2n dung c\u1ea7n bokeh \u0111\u1eb9p, ch\u1ee5p phong c\u1ea3nh c\u1ea7n \u0111\u1ed9 s\u00e2u tr\u01b0\u1eddng \u1ea3nh r\u1ed9ng. \u0110\u1ed3ng th\u1eddi, kh\u1ea9u \u0111\u1ed9 c\u00f2n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp v\u00e0 ISO, gi\u00fap c\u00e2n b\u1eb1ng s\u00e1ng hi\u1ec7u qu\u1ea3 trong m\u1ecdi t\u00ecnh hu\u1ed1ng.<\/span><\/p>\n

Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft<\/span><\/h3>\n

M\u1ed9t s\u1ed1 lens cao c\u1ea5p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u1ed1ng b\u1ee5i, n\u01b0\u1edbc v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t, gi\u00fap ng\u01b0\u1eddi ch\u1ee5p y\u00ean t\u00e2m s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau. Khi t\u00ecm hi\u1ec3u <\/span>lens l\u00e0 g\u00ec<\/b>, b\u1ea1n s\u1ebd th\u1ea5y r\u1eb1ng ngo\u00e0i c\u00e1c y\u1ebfu t\u1ed1 quang h\u1ecdc, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu m\u00f4i tr\u01b0\u1eddng c\u0169ng l\u00e0 ti\u00eau ch\u00ed quan tr\u1ecdng khi ch\u1ecdn mua \u1ed1ng k\u00ednh. C\u00e1c khe n\u1ed1i, n\u00fat b\u1ea5m v\u00e0 th\u1ea5u k\u00ednh c\u1ee7a lo\u1ea1i lens n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn \u0111\u1ec3 h\u1ea1n ch\u1ebf t\u00e1c \u0111\u1ed9ng t\u1eeb m\u01b0a, b\u1ee5i ho\u1eb7c \u0111\u1ed9 \u1ea9m.\u00a0<\/span><\/p>\n

\"lens-la-gi-10\"<\/picture><\/p>\n

Ch\u1ecdn lens c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu t\u1ed1t kh\u00f4ng ch\u1ec9 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd \u1ed1ng k\u00ednh m\u00e0 c\u00f2n gi\u00fap duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh \u1ed5n \u0111\u1ecbnh trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc khi b\u1ea1n \u0111\u1ea7u t\u01b0 lens cho m\u1ee5c \u0111\u00edch chuy\u00ean nghi\u1ec7p.<\/span><\/p>\n

Kinh nghi\u1ec7m ch\u1ecdn lens (\u1ed1ng k\u00ednh) ph\u00f9 h\u1ee3p cho m\u00e1y \u1ea3nh<\/span><\/h2>\n