{"id":5781,"date":"2024-06-11T18:13:36","date_gmt":"2024-06-11T11:13:36","guid":{"rendered":"https:\/\/nhiepanhvacongnghe.com\/?p=5781"},"modified":"2024-06-11T18:17:48","modified_gmt":"2024-06-11T11:17:48","slug":"danh-gia-chi-tiet-sigma-28-45mm-f1-8-dg-dn","status":"publish","type":"post","link":"https:\/\/nhiepanhvacongnghe.com\/index.php\/2024\/06\/11\/danh-gia-chi-tiet-sigma-28-45mm-f1-8-dg-dn\/","title":{"rendered":"\u0110\u00e1nh gi\u00e1 chi ti\u1ebft : Sigma 28-45mm f1.8 DG DN"},"content":{"rendered":"\n

C\u00e1ch \u0111\u00e2y g\u1ea7n 10 n\u0103m, \u1ed1ng k\u00ednh 18-35mm F1.8 c\u1ee7a Sigma \u0111\u00e3 tr\u1edf th\u00e0nh \u1ed1ng k\u00ednh \u0111\u01b0\u1ee3c y\u00eau th\u00edch b\u1eadc nh\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi nh\u1eefng ng\u01b0\u1eddi th\u00edch quay video. Nay Sigma ti\u1ebfp n\u1ed1i \u0111i\u1ec1u \u0111\u00f3 v\u1edbi m\u1ed9t \u1ed1ng k\u00ednh full frame t\u01b0\u01a1ng t\u1ef1 : Sigma 28-45mm F1.8<\/strong>. V\u1edbi m\u1ed9t s\u1ea3n ph\u1ea9m m\u1edbi \u0111\u1ed9c \u0111\u00e1o ch\u1eafc ch\u1eafn hy v\u1ecdng Sigma s\u1ebd l\u1ea1i l\u1ea5y \u0111\u01b0\u1ee3c th\u00e0nh c\u00f4ng nh\u01b0 c\u1ee7a \u1ed1ng k\u00ednh 18-35mm. Tuy l\u00e0 \u1ed1ng k\u00ednh full frame, nh\u01b0ng Sigma \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh c\u00f4ng th\u1ee9c \u0111\u1ec3 cho ph\u00e9p zoom l\u1edbn h\u01a1n m\u1ed9t ch\u00fat v\u00e0 kh\u1ea9u \u0111\u1ed9 t\u1ed1i \u0111a s\u00e1ng h\u01a1n m\u1ed9t ch\u00fat.<\/p>\n\n\n\n

M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng b\u00e1n h\u00e0ng ch\u00ednh c\u1ee7a Sigma 28-45mm f1.8 bao g\u1ed3m:
– Zoom to\u00e0n khung h\u00ecnh F1.8 \u0111\u1ea7u ti\u00ean tr\u00ean th\u1ebf gi\u1edbi
– Hi\u1ec7u su\u1ea5t quang h\u1ecdc gi\u1ed1ng nh\u01b0 Prime
– \u0110\u1ea7y \u0111\u1ee7 c\u00e1c t\u00ednh n\u0103ng video
– Nhi\u1ec1u n\u00fat t\u00f9y ch\u1ec9nh
– V\u00f2ng kh\u1ea9u \u0111\u1ed9 v\u1edbi c\u00e1c t\u00f9y ch\u1ecdn declick v\u00e0 kh\u00f3a m\u1ed1ng m\u1eaft
– Thi\u1ebft k\u1ebf thu ph\u00f3ng b\u00ean trong
– Ch\u1ed1ng th\u1eddi ti\u1ebft tri\u1ec7t \u0111\u1ec3.<\/p>\n\n\n\n

\"<\/figure>\n\n\n\n

C\u1ea5u t\u1ea1o Sigma 28-45mm f1.8 DG DN<\/h2>\n\n\n\n

C\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a Sigma li\u00ean t\u1ee5c ph\u00e1t tri\u1ec3n v\u00e0 h\u1ecd r\u1ea5t ch\u1ee7 \u0111\u1ed9ng trong vi\u1ec7c b\u1ed5 sung c\u00e1c t\u00ednh n\u0103ng v\u00e0 c\u1ea3i ti\u1ebfn m\u1edbi. Nhi\u1ec1u c\u1ea3i ti\u1ebfn v\u1ec1 t\u00ednh n\u0103ng trong s\u1ed1 \u0111\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf xoay quanh vi\u1ec7c quay video, \u0111i\u1ec1u n\u00e0y r\u00f5 r\u00e0ng ph\u1ee5c v\u1ee5 t\u1ed1t cho \u1ed1ng k\u00ednh m\u1edbi n\u00e0y. \u1ed0ng k\u00ednh 18-35mm \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao, nh\u01b0ng s\u1ef1 th\u1eadt c\u1ee7a v\u1ea5n \u0111\u1ec1 l\u00e0 \u201ct\u00ednh n\u0103ng\u201d duy nh\u1ea5t m\u00e0 n\u00f3 c\u00f3 l\u00e0 c\u00f4ng t\u1eafc AF\/MF. N\u00f3 kh\u00f4ng c\u00f3 t\u00ednh n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft (24-35mm F2 c\u0169ng v\u1eady) v\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 lo\u1ea1i \u1ed5n \u0111\u1ecbnh d\u1ef1a tr\u00ean \u1ed1ng k\u00ednh n\u00e0o. \u0110\u1ed1i v\u1edbi \u1ed1ng k\u00ednh 28-45mm c\u0169ng v\u1eady, nh\u01b0ng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t hi\u1ec7n nay l\u00e0 h\u1ea7u h\u1ebft t\u1ea5t c\u1ea3 c\u00e1c m\u00e1y \u1ea3nh kh\u00f4ng g\u01b0\u01a1ng l\u1eadt full frame c\u1ee7a Sony \u0111\u1ec1u c\u00f3 t\u00ednh n\u0103ng \u1ed5n \u0111\u1ecbnh d\u1ef1a tr\u00ean m\u00e1y \u1ea3nh, c\u0169ng nh\u01b0 m\u1ed9t s\u1ed1 m\u00e1y \u1ea3nh ng\u00e0m L m\u00e0 \u1ed1ng k\u00ednh n\u00e0y c\u0169ng t\u01b0\u01a1ng th\u00edch. Tuy nhi\u00ean, ngo\u00e0i \u0111i\u1ec1u \u0111\u00f3 ra, 28-45mm DN v\u1ec1 c\u01a1 b\u1ea3n c\u00f3 t\u1ea5t c\u1ea3 c\u00e1c t\u00ednh n\u0103ng hi\u1ec7n c\u00f3 tr\u00ean c\u00e1c \u1ed1ng k\u00ednh hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

<\/h3>\n\n\n\n
\"<\/figure>\n\n\n\n

B\u1eaft \u0111\u1ea7u v\u1edbi v\u00f2ng kh\u1ea9u \u0111\u1ed9 (m\u1ed9t th\u1ee9 t\u01b0\u01a1ng \u0111\u1ed1i m\u1edbi \u0111\u1ed1i v\u1edbi \u1ed1ng k\u00ednh zoom). V\u00f2ng kh\u1ea9u \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, cho ph\u00e9p b\u1ea1n ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c \u1edf m\u1ee9c 1\/3 stops<\/p>\n\n\n\n

\u1ede ph\u00eda d\u01b0\u1edbi b\u00ean tr\u00e1i c\u1ee7a \u1ed1ng k\u00ednh l\u00e0 c\u00f4ng t\u1eafc Click\/Declick cho ph\u00e9p b\u1ea1n ch\u1ecdn gi\u1eefa hai t\u00f9y ch\u1ecdn \u0111\u00f3.<\/p>\n\n\n\n

B\u00ean ph\u1ea3i \u1ed1ng k\u00ednh l\u00e0 kh\u00f3a m\u1ed1ng m\u1eaft. Kh\u00f3a m\u1ed1ng m\u1eaft s\u1ebd cho ph\u00e9p b\u1ea1n kh\u00f3a v\u00e0o ho\u1eb7c ra kh\u1ecfi v\u00f2ng kh\u1ea9u \u0111\u1ed9. \u0110\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi mu\u1ed1n s\u1eed d\u1ee5ng v\u00f2ng kh\u1ea9u \u0111\u1ed9 v\u00e0 kh\u00f4ng v\u00f4 t\u00ecnh chuy\u1ec3n sang \u0111i\u1ec1u khi\u1ec3n kh\u1ea9u \u0111\u1ed9 d\u1ef1a tr\u00ean m\u00e1y \u1ea3nh, kh\u00f3a c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u00e0i khi b\u1ea1n \u1edf trong v\u00f2ng kh\u1ea9u \u0111\u1ed9 v\u00e0 gi\u1eef b\u1ea1n \u1edf \u0111\u00f3. N\u1ebfu b\u1ea1n kh\u00f4ng ph\u1ea3i l\u00e0 ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00f2ng kh\u1ea9u \u0111\u1ed9, b\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n \u1ed1ng k\u00ednh sang v\u1ecb tr\u00ed A v\u00e0 \u0111i\u1ec1u khi\u1ec3n n\u00f3 t\u1eeb b\u00ean trong m\u00e1y \u1ea3nh. Vi\u1ec7c kh\u00f3a m\u1ed1ng m\u1eaft khi \u1edf ch\u1ebf \u0111\u1ed9 A \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n s\u1ebd kh\u00f4ng v\u00f4 t\u00ecnh ch\u1ea1m v\u00e0o \u0111i\u1ec1u khi\u1ec3n kh\u1ea9u \u0111\u1ed9 th\u1ee7 c\u00f4ng.<\/p>\n\n\n\n

Ph\u00eda b\u00ean tr\u00e1i c\u1ee7a \u1ed1ng k\u00ednh c\u0169ng c\u00f3 c\u00f4ng t\u1eafc AF\/MF (lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao!)<\/p>\n\n\n\n

C\u00f3 n\u00fat ch\u1ee9c n\u0103ng th\u1ee9 hai \u1edf ph\u00eda tr\u00ean \u1ed1ng k\u00ednh \u0111\u1ec3 truy c\u1eadp khi ch\u1ee5p \u1edf v\u1ecb tr\u00ed th\u1eb3ng \u0111\u1ee9ng. Ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c n\u00fat \u0111\u00f3 (ch\u00fang l\u00e0 d\u1ef1 ph\u00f2ng, kh\u00f4ng ph\u1ea3i hai ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t t\u1eeb b\u00ean trong m\u00e1y \u1ea3nh.<\/p>\n\n\n\n

\"<\/figure>\n\n\n\n

<\/h3>\n\n\n\n

\u0110\u00e2y l\u00e0 \u1ed1ng k\u00ednh zoom b\u00ean trong n\u00ean kh\u00f4ng c\u1ea7n kh\u00f3a zoom. \u1ed0ng k\u00ednh zoom b\u00ean trong c\u00f3 xu h\u01b0\u1edbng l\u1edbn h\u01a1n \u1ed1ng k\u00ednh zoom b\u00ean ngo\u00e0i. Chi\u1ec1u d\u00e0i \u1ed1ng k\u00ednh kh\u00f4ng \u0111\u1ed5i, gi\u00fap s\u1eed d\u1ee5ng tr\u00ean gimbal d\u1ec5 d\u00e0ng h\u01a1n (c\u00e2n b\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng thay \u0111\u1ed5i)
Kh\u00f4ng c\u00f3 nguy c\u01a1 zoom zoom v\u00ec kh\u00f4ng c\u00f3 g\u00ec b\u00ean ngo\u00e0i b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi tr\u1ecdng l\u1ef1c. Thao t\u00e1c thu ph\u00f3ng m\u01b0\u1ee3t m\u00e0 v\u00e0 ch\u00ednh x\u00e1c h\u01a1n. C\u00f3 \u00edt nguy c\u01a1 b\u1ecb b\u1ee5i ho\u1eb7c h\u01a1i \u1ea9m v\u00e0o \u1ed1ng k\u00ednh h\u01a1n v\u00ec kh\u00f4ng c\u00f3 g\u00ec ra v\u00e0o. Vi\u1ec7c x\u1eed l\u00fd t\u1ed1t h\u01a1n.<\/p>\n\n\n\n

Nh\u00ecn t\u1ed5ng th\u1ec3 c\u1ee7a \u1ed1ng k\u00ednh n\u00e0y r\u1ea5t hi\u1ec7n \u0111\u1ea1i c\u1ee7a Sigma, v\u1edbi nhi\u1ec1u \u0111\u01b0\u1eddng d\u1ecdc v\u00e0 m\u1ed9t v\u00e0i h\u1ecda ti\u1ebft kh\u00e1c nhau.<\/p>\n\n\n\n

K\u00edch th\u01b0\u1edbc c\u01a1 b\u1ea3n c\u1ee7a \u1ed1ng k\u00ednh l\u00e0 \u0111\u01b0\u1eddng k\u00ednh 87,8 mm v\u00e0 chi\u1ec1u d\u00e0i 153,4mm. N\u00f3 n\u1eb7ng kho\u1ea3ng 950g v\u00e0 c\u00f3 ren l\u1ecdc ph\u00eda tr\u01b0\u1edbc 82mm.<\/p>\n\n\n\n

<\/h3>\n\n\n\n
\"<\/figure>\n\n\n\n

C\u00f3 11 l\u00e1 kh\u1ea9u, gi\u00fap gi\u1eef cho m\u1ed1ng m\u1eaft kh\u1ea9u \u0111\u1ed9 c\u00f3 h\u00ecnh d\u1ea1ng tr\u00f2n ngay c\u1ea3 khi \u1ed1ng k\u00ednh kh\u00e9p l\u1ea1i.<\/p>\n\n\n\n

Kho\u1ea3ng c\u00e1ch l\u1ea5y n\u00e9t t\u1ed1i thi\u1ec3u c\u1ee7a \u1ed1ng k\u00ednh l\u00e0 30cm v\u00e0 con s\u1ed1 ph\u00f3ng \u0111\u1ea1i t\u1ed1i \u0111a \u0111\u1ea1t \u0111\u01b0\u1ee3c \u1edf 45mm v\u00e0 r\u1ea5t h\u1eefu \u00edch 0,25x (1:4). \u0110i\u1ec1u n\u00e0y k\u1ebft h\u1ee3p v\u1edbi kh\u1ea9u \u0111\u1ed9 F1.8 cho ph\u00e9p t\u1ea1o ra h\u1eadu c\u1ea3nh m\u1edd r\u1ea5t \u0111\u1eb9p v\u00e0 hi\u1ec7u su\u1ea5t ch\u1ee5p c\u1eadn c\u1ea3nh kh\u00e1 t\u1ed1t<\/p>\n\n\n\n

Sigma \u0111ang t\u00edch h\u1ee3p nhi\u1ec1u t\u00ednh n\u0103ng v\u00e0o c\u00e1c \u1ed1ng k\u00ednh h\u00e0ng \u0111\u1ea7u c\u1ee7a h\u1ecd nh\u01b0 b\u1ea5t k\u1ef3 ai hi\u1ec7n c\u00f3, v\u00e0 \u0111i\u1ec1u \u0111\u00f3 th\u1eadt tuy\u1ec7t v\u1eddi \u1edf m\u1ed9t \u1ed1ng k\u00ednh c\u00f3 kh\u1ea3 n\u0103ng quay video v\u00e0 ch\u1ee5p \u1ea3nh t\u0129nh nh\u01b0 nhau. \u0110\u00e2y l\u00e0 m\u1ed9t \u1ed1ng k\u00ednh l\u1edbn, v\u00e0 n\u00f3 \u0111ang l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u m\u00e0 ch\u01b0a c\u00f3 \u1ed1ng k\u00ednh zoom fullframe n\u00e0o kh\u00e1c l\u00e0m \u0111\u01b0\u1ee3c tr\u01b0\u1edbc \u0111\u00e2y.<\/p>\n\n\n\n

Ch\u1ea5t l\u01b0\u1ee3ng t\u1ef1 \u0111\u1ed9ng l\u1ea5y n\u00e9t c\u1ee7a Sigma 28-45mm f1.8<\/h2>\n\n\n\n

\u0110\u00e2y l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c kh\u00e1c m\u00e0 Sigma \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 b\u01b0\u1edbc ti\u1ebfn quan tr\u1ecdng. C\u00e1c s\u1ea3n ph\u1ea9m ban \u0111\u1ea7u c\u1ee7a h\u1ecd tr\u00ean Sony (v\u00e0 ng\u00e0m L) c\u00f3 \u0111\u1ed9ng c\u01a1 l\u1ea5y n\u00e9t STM, nh\u01b0ng Sigma k\u1ec3 t\u1eeb \u0111\u00f3 \u0111\u00e3 ph\u00e1t h\u00e0nh \u0111\u1ed9ng c\u01a1 l\u1ea5y n\u00e9t HLA m\u1ea1nh h\u01a1n, m\u01b0\u1ee3t m\u00e0 h\u01a1n (B\u1ed9 truy\u1ec1n \u0111\u1ed9ng tuy\u1ebfn t\u00ednh t\u1ed1c \u0111\u1ed9 cao). \u0110\u1ed9ng c\u01a1 HLA c\u00f3 m\u00f4-men xo\u1eafn\/l\u1ef1c \u0111\u1ea9y l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c \u1ed1ng k\u00ednh \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ed9ng c\u01a1 b\u01b0\u1edbc, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng khi b\u1ea1n n\u00f3i v\u1ec1 m\u1ed9t \u1ed1ng k\u00ednh c\u00f3 k\u00ednh quang h\u1ecdc l\u1edbn h\u01a1n, n\u1eb7ng h\u01a1n nh\u01b0 \u1ed1ng k\u00ednh n\u00e0y. L\u1ef1c \u0111\u1ea9y c\u1ee7a \u0111\u1ed9ng c\u01a1 l\u1ea5y n\u00e9t t\u0103ng l\u00ean c\u00f3 ngh\u0129a l\u00e0 n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng di chuy\u1ec3n nhanh h\u01a1n nhi\u1ec1u v\u00e0 do \u0111\u00f3 ph\u1ea3n \u1ee9ng nhanh h\u01a1n nhi\u1ec1u. Nh\u1eefng thay \u0111\u1ed5i v\u1ec1 ti\u00eau \u0111i\u1ec3m trong th\u1ebf gi\u1edbi th\u1ef1c v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 t\u1ee9c th\u1eddi, khi\u1ebfn \u1ed1ng k\u00ednh n\u00e0y th\u1eadm ch\u00ed c\u00f3 kh\u1ea3 n\u0103ng theo k\u1ecbp m\u1ed9t s\u1ed1 h\u00e0nh \u0111\u1ed9ng.<\/p>\n\n\n\n

\u0110i\u1ec1u \u0111\u00f3 l\u00e0m cho \u1ed1ng k\u00ednh n\u00e0y tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi cho nh\u1eefng ai mu\u1ed1n ch\u1ee5p \u1ea3nh s\u1ef1 ki\u1ec7n ho\u1eb7c \u0111\u00e1m c\u01b0\u1edbi, v\u00ec b\u1ea1n c\u00f3 th\u1ec3 linh ho\u1ea1t v\u1ec1 \u0111\u1ed9 d\u00e0i ti\u00eau c\u1ef1 (kh\u00f4ng gi\u1ed1ng nh\u01b0 \u1ed1ng k\u00ednh m\u1ed9t ti\u00eau c\u1ef1) nh\u01b0ng c\u00f3 kh\u1ea3 n\u0103ng thu th\u1eadp \u00e1nh s\u00e1ng c\u1ee7a \u1ed1ng k\u00ednh m\u1ed9t ti\u00eau c\u1ef1, cho ph\u00e9p b\u1ea1n ghi l\u1ea1i nh\u1eefng kho\u1ea3nh kh\u1eafc quan tr\u1ecdng \u0111\u00f3.<\/p>\n\n\n\n

\u00c2m thanh l\u1ea5y n\u00e9t v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 kh\u00f4ng t\u1ed3n t\u1ea1i. \u0110\u1ed9ng c\u01a1 HLA v\u1ec1 c\u01a1 b\u1ea3n kh\u00f4ng g\u00e2y ti\u1ebfng \u1ed3n ngay c\u1ea3 khi \u0111\u1eb7t tai g\u1ea7n \u1ed1ng k\u00ednh. \u0110\u1ed9 ch\u00ednh x\u00e1c l\u1ea5y n\u00e9t c\u0169ng t\u1ed1t.<\/p>\n\n\n\n

\"\u1ed1ng<\/figure>\n\n\n\n

Ch\u1ea5t l\u01b0\u1ee3ng quay video Sigma 28-45mm f1.8<\/h2>\n\n\n\n

K\u1ebft qu\u1ea3 ki\u1ec3m tra quay video c\u0169ng kh\u00e1 t\u1ed1t. Thao t\u00e1c l\u1ea5y n\u00e9t t\u1ef1 \u0111\u1ed9ng r\u1ea5t nhanh v\u00e0 t\u1ef1 tin. L\u1ea5y n\u00e9t \u0111\u1ee7 nhanh n\u00ean b\u1ea1n c\u00f3 th\u1ec3 s\u1ebd mu\u1ed1n l\u00e0m ch\u1eadm n\u00f3 tr\u00ean m\u00e1y n\u1ebfu mu\u1ed1n chuy\u1ec3n ti\u1ebfp l\u1ea5y n\u00e9t \u0111\u1eadm ch\u1ea5t \u0111i\u1ec7n \u1ea3nh h\u01a1n. C\u00f3 th\u1ec3 ph\u00f3ng to v\u00e0 thu nh\u1ecf khi t\u1eaft ti\u00eau c\u1ef1 v\u00e0 k\u1ebft qu\u1ea3 \u1edf m\u1ee9c ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

\u0110\u1ed9ng c\u01a1 l\u1ea5y n\u00e9t HLA c\u1ee7a Sigma r\u1ea5t tuy\u1ec7t v\u1eddi, m\u1eb7c d\u00f9 ch\u00fang b\u1ecb h\u1ea1n ch\u1ebf \u0111\u00f4i ch\u00fat \u1edf Sony do Sony gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 ch\u1ee5p \u1edf m\u1ee9c 15FPS v\u1edbi \u1ed1ng k\u00ednh c\u1ee7a b\u00ean th\u1ee9 ba, do \u0111\u00f3, \u0111\u00e2y l\u00e0 l\u0129nh v\u1ef1c m\u00e0 28-45 DN k\u00e9m c\u1ea1nh tranh h\u01a1n v\u1edbi \u1ed1ng k\u00ednh Sony G-Master.<\/p>\n\n\n\n

\"Sigma<\/figure>\n\n\n\n

Ph\u00e2n t\u00edch ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh Sigma 28-45mm f1.8<\/h2>\n\n\n\n

Sigma 28-45mm f1.8 l\u00e0 m\u1ed9t \u1ed1ng k\u00ednh kh\u00e1 \u0111\u1eb7c bi\u1ec7t v\u1ec1 m\u1eb7t quang h\u1ecdc. C\u00f4ng th\u1ee9c quang h\u1ecdc kh\u00e1 ph\u1ee9c t\u1ea1p (18 ph\u1ea7n t\u1eed trong 15 nh\u00f3m) v\u00e0 bao g\u1ed3m 5 ph\u1ea7n t\u1eed SLD c\u00f9ng v\u1edbi 3 ph\u1ea7n t\u1eed phi c\u1ea7u. \u0110\u00e2y l\u00e0 m\u1ed9t \u1ed1ng k\u00ednh hi\u1ec7u su\u1ea5t cao khi Sigma th\u1ef1c s\u1ef1 \u01b0u \u00e1i so s\u00e1nh n\u00f3 v\u1edbi hai \u1ed1ng k\u00ednh prime g\u1ea7n \u0111\u00e2y c\u1ee7a h\u1ecd \u2013 24mm F1.4 DN | ART v\u00e0 50mm F1.4 DN | \u1ed1ng k\u00ednh ART. Hi\u1ec7n t\u1ea1i, v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, 28-45 DN kh\u00f4ng bao g\u1ed3m m\u1ed9t trong nh\u1eefng ti\u00eau c\u1ef1 \u0111\u00f3, nh\u01b0ng n\u00f3 minh h\u1ecda m\u1ee9c \u0111\u1ed9 thu ph\u00f3ng n\u00e0y s\u1eafc n\u00e9t h\u01a1n tr\u00ean m\u1ed9t ph\u1ea7n t\u1ed1t c\u1ee7a khung h\u00ecnh so v\u1edbi m\u1ed9t trong nh\u1eefng \u1ed1ng k\u00ednh m\u1ed9t ti\u00eau c\u1ef1 n\u00e0y.<\/p>\n\n\n\n

Tuy nhi\u00ean, Sigma t\u1eeb l\u00e2u \u0111\u00e3 c\u00f3 th\u1ec3 t\u1ea1o ra nh\u1eefng \u1ed1ng k\u00ednh s\u1eafc n\u00e9t. \u0110i\u1ec1u n\u1ed5i b\u1eadt h\u01a1n \u1edf 28-45 DN l\u00e0 m\u00e0u s\u1eafc, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n, \u0111\u1ed9 s\u1eafc n\u00e9t v\u00e0 hi\u1ec7u \u1ee9ng m\u1edd nh\u00f2e k\u1ebft h\u1ee3p v\u1edbi nhau \u0111\u1ec3 t\u1ea1o ra m\u1ed9t \u1ed1ng k\u00ednh t\u1ea1o ra nh\u1eefng h\u00ecnh \u1ea3nh r\u1ea5t \u0111\u1eb7c bi\u1ec7t. <\/p>\n\n\n\n

T\u00f4i c\u0169ng kh\u00f4ng th\u1ea5y c\u00f3 v\u1ea5n \u0111\u1ec1 g\u00ec v\u1edbi LaCA (quang sai m\u00e0u hai b\u00ean), hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y xu\u1ea5t hi\u1ec7n d\u1ecdc theo c\u00e1c c\u1ea1nh c\u1ee7a khung h\u00ecnh. T\u1ea5t c\u1ea3 c\u00e1c chuy\u1ec3n \u0111\u1ed5i \u1edf \u0111\u00e2y \u0111\u1ec1u r\u1ea5t trung t\u00ednh.<\/p>\n\n\n\n

Sigma \u0111\u00e3 kh\u00f4n ngoan ch\u1ecdn c\u00e1ch thu h\u1eb9p ph\u1ea1m vi ti\u00eau c\u1ef1 xu\u1ed1ng 28mm, \u0111i\u1ec1u n\u00e0y d\u1ec5 thi\u1ebft k\u1ebf h\u01a1n nhi\u1ec1u so v\u1edbi vi\u1ec7c c\u1ed1 g\u1eafng m\u1edf r\u1ed9ng ph\u1ea1m vi ti\u00eau c\u1ef1 \u0111\u1ebfn 24mm. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 \u1edf \u0111\u00e2y c\u00f3 \u00edt bi\u1ebfn d\u1ea1ng h\u01a1n nhi\u1ec1u so v\u1edbi tr\u00ean 24-70mm F2.8 II, v\u00e0 \u0111\u1ed9 bi\u1ebfn d\u1ea1ng \u1edf \u0111\u00f3 tuy\u1ebfn t\u00ednh h\u01a1n v\u00e0 d\u1ec5 s\u1eeda h\u01a1n.<\/p>\n\n\n\n

\"Sigma<\/figure>\n\n\n\n

<\/h3>\n\n\n\n

V\u1eady c\u00f2n \u0111\u1ed9 ph\u00e2n gi\u1ea3i v\u00e0 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n th\u00ec sao? MTF g\u1ee3i \u00fd r\u1eb1ng \u0111\u00e2y l\u00e0 m\u1ed9t \u1ed1ng k\u00ednh r\u1ea5t s\u1eafc n\u00e9t \u1edf khu v\u1ef1c trung t\u00e2m v\u00e0 gi\u1eefa khung h\u00ecnh, v\u1edbi \u0111\u1ed9 s\u1ee5t g\u00f3c \u0111i\u1ec3n h\u00ecnh \u1edf kh\u1ea9u \u0111\u1ed9 r\u1ed9ng. K\u1ebft qu\u1ea3 ki\u1ec3m tra ho\u00e0n h\u1ea3o \u1edf trung t\u00e2m v\u00e0 khung h\u00ecnh gi\u1eefa \u1edf 28mm, F1.8, v\u1edbi c\u00e1c g\u00f3c tr\u00f4ng r\u00f5 r\u00e0ng l\u00e0 m\u1ec1m m\u1ea1i h\u01a1n.<\/p>\n\n\n\n

Vi\u1ec7c gi\u1ea3m nh\u1eb9 xu\u1ed1ng F2 s\u1ebd t\u1ea1o ra \u0111\u1ed9 s\u1eafc n\u00e9t v\u00e0 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao h\u01a1n m\u1ed9t ch\u00fat, m\u1eb7c d\u00f9 hi\u1ec7u \u1ee9ng \u0111\u01b0\u1ee3c c\u1ea3m nh\u1eadn r\u00f5 h\u01a1n \u1edf nh\u1eefng v\u00f9ng v\u1ed1n \u0111\u00e3 m\u1ea1nh h\u01a1n \u1edf c\u00e1c g\u00f3c.<\/p>\n\n\n\n

C\u00e1c g\u00f3c b\u1eaft \u0111\u1ea7u th\u1ef1c s\u1ef1 s\u1eafc n\u00e9t \u1edf F4 v\u00e0 \u0111\u00e2y l\u00e0 \u0111\u1ed9 s\u1eafc n\u00e9t ho\u00e0n h\u1ea3o tr\u00ean to\u00e0n khung h\u00ecnh.<\/p>\n\n\n\n

\u1ed0ng k\u00ednh n\u00e0y ho\u1ea1t \u0111\u1ed9ng tuy\u1ec7t v\u1eddi \u1edf ti\u00eau c\u1ef1 28mm, cho d\u00f9 ch\u1ee5p \u1ea3nh c\u00f3 \u0111\u1ed9 s\u00e2u tr\u01b0\u1eddng \u1ea3nh n\u00f4ng \u1edf F1.8:<\/p>\n\n\n\n

\u1ed0ng k\u00ednh \u0111\u1ee7 s\u1eafc n\u00e9t \u0111\u1ec3 c\u00f3 th\u1ec3 x\u1eed l\u00fd m\u1ed9t ch\u00fat nhi\u1ec5u x\u1ea1 \u1edf F11, nh\u01b0ng h\u00ecnh \u1ea3nh m\u1ec1m h\u01a1n \u1edf F16 (m\u1eb7c d\u00f9 v\u1eabn kh\u00f4ng t\u1ec7). Chuy\u1ec3n sang 35 mm, hi\u1ec7u su\u1ea5t th\u1eadm ch\u00ed c\u00f2n m\u1ea1nh m\u1ebd h\u01a1n \u1edf m\u1ecdi n\u01a1i trong khung h\u00ecnh. Chi ti\u1ebft t\u1ed1t h\u01a1n, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n t\u1ed1t h\u01a1n.<\/p>\n\n\n\n

\"\u1ea3nh<\/figure>\n\n\n\n

<\/h3>\n\n\n\n

40mm c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n k\u00e9m h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi 35mm (t\u01b0\u01a1ng t\u1ef1 nh\u01b0 28mm), m\u1eb7c d\u00f9 n\u00f3 v\u1eabn \u0111\u1eb7c bi\u1ec7t t\u1ed1t. <\/p>\n\n\n\n

Ch\u1ee5p \u1edf 45mm c\u0169ng s\u1ebd mang l\u1ea1i cho b\u1ea1n s\u1ef1 k\u1ebft h\u1ee3p \u1ea5n t\u01b0\u1ee3ng nh\u1ea5t gi\u1eefa \u0111\u1ed9 s\u1eafc n\u00e9t v\u00e0 hi\u1ec7u \u1ee9ng m\u1edd \u1ea3o. \u0110\u00e2y l\u00e0 m\u1ed9t \u1ed1ng k\u00ednh c\u00f3 kh\u1ea3 n\u0103ng c\u00e2n b\u1eb1ng r\u1ea5t t\u1ed1t gi\u1eefa \u0111\u1ed9 s\u1eafc n\u00e9t v\u00e0 \u0111\u1ed9 m\u1ec1m m\u1ea1i.<\/p>\n\n\n\n

N\u00f3i chung t\u00f4i ngh\u0129 r\u1eb1ng hi\u1ec7u \u1ee9ng x\u00f3a ph\u00f4ng r\u1ea5t \u0111\u1eb9p. C\u00f3 m\u1ed9t s\u1ef1 ch\u00eanh l\u1ec7ch r\u1ea5t l\u1edbn t\u1eeb m\u1eb7t ph\u1eb3ng l\u1ea5y n\u00e9t \u0111\u1ebfn \u0111\u1ed9 m\u1edd v\u00e0 h\u00ecnh \u1ea3nh tr\u00f4ng r\u1ea5t \u0111\u1eb9p trong m\u1eaft t\u00f4i. Ngay c\u1ea3 khi ch\u1ecdn \u0111\u1ed1i t\u01b0\u1ee3ng \u1edf xa h\u01a1n m\u1ed9t ch\u00fat, hi\u1ec7u \u1ee9ng m\u1edd \u1ea3o v\u1eabn kh\u00e1 \u0111\u1eb9p.<\/p>\n\n\n\n

Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y c\u0169ng c\u00f3 v\u1ebb r\u1ea5t ch\u1eafc ch\u1eafn. \u1ea2nh ch\u1ee5p bu\u1ed5i s\u00e1ng n\u00e0y c\u00f3 m\u1eb7t tr\u1eddi n\u1eb1m ngo\u00e0i khung h\u00ecnh v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n \u0111\u01b0\u1ee3c duy tr\u00ec t\u1ed1t.<\/p>\n\n\n\n

\"\u1ea3nh<\/figure>\n\n\n\n

<\/h2>\n\n\n\n

\u0110\u00fang v\u1eady, Sigma 28-45mm f1.8 DN to v\u00e0 n\u1eb7ng, nh\u01b0ng n\u00f3 c\u0169ng r\u1ea5t \u0111\u1eb7c bi\u1ec7t v\u1ec1 m\u1eb7t quang h\u1ecdc. Sigma kh\u00f4ng ch\u1ec9 \u0111\u00e3 l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u m\u00e0 tr\u01b0\u1edbc \u0111\u00e2y ch\u01b0a ai t\u1eebng l\u00e0m trong vi\u1ec7c t\u1ea1o ra \u1ed1ng k\u00ednh zoom F1.8 to\u00e0n khung h\u00ecnh. \u0110\u00e2y ch\u1eafc ch\u1eafn s\u1ebd l\u00e0 s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi \u01b0a th\u00edch v\u00e0 s\u0103n \u0111\u00f3n.<\/p>\n\n\n\n

Ngu\u1ed3n tham kh\u1ea3o : dustinabbott<\/p>\n\n\n\n

>>> Xem th\u00eam : \u0110\u00e1nh gi\u00e1 Sigma 18-50mm f\/2.8 DC DN: \u1ed0ng k\u00ednh Zoom N\u1ed5i B\u1eadt<\/a>
<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1ch \u0111\u00e2y g\u1ea7n 10 n\u0103m, \u1ed1ng k\u00ednh 18-35mm F1.8 c\u1ee7a Sigma \u0111\u00e3 tr\u1edf th\u00e0nh \u1ed1ng k\u00ednh \u0111\u01b0\u1ee3c y\u00eau th\u00edch b\u1eadc nh\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi nh\u1eefng ng\u01b0\u1eddi th\u00edch quay video. Nay Sigma ti\u1ebfp n\u1ed1i \u0111i\u1ec1u \u0111\u00f3 v\u1edbi m\u1ed9t \u1ed1ng k\u00ednh full frame t\u01b0\u01a1ng t\u1ef1 : Sigma 28-45mm F1.8. V\u1edbi m\u1ed9t s\u1ea3n ph\u1ea9m m\u1edbi \u0111\u1ed9c \u0111\u00e1o […]<\/p>\n","protected":false},"author":1,"featured_media":5840,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[341,48,343,68,184,150,342,187,339],"class_list":["post-5781","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trai-nghiem-san-pham","tag-28-45mm","tag-lens","tag-lens-sigma","tag-may-anh","tag-nhiepanhvacongnghe","tag-ong-kinh","tag-ong-kinh-sigma","tag-sigma","tag-sigma-28-45mm"],"yoast_head":"\n\u0110\u00e1nh gi\u00e1 chi ti\u1ebft : Sigma 28-45mm f1.8 DG DN - Nhi\u1ebfp \u1ea2nh V\u00e0 C\u00f4ng Ngh\u1ec7<\/title>\n<meta name=\"description\" content=\"Sigma 28-45mm f1.8 DG DN l\u00e0 \u1ed1ng k\u00ednh full frame \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi y\u00eau th\u00edch, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi nh\u1eefng ng\u01b0\u1eddi th\u00edch quay video.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nhiepanhvacongnghe.com\/index.php\/2024\/06\/11\/danh-gia-chi-tiet-sigma-28-45mm-f1-8-dg-dn\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u00e1nh gi\u00e1 chi ti\u1ebft : Sigma 28-45mm f1.8 DG DN - 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