{"id":443,"date":"2025-04-21T09:32:27","date_gmt":"2025-04-21T09:32:27","guid":{"rendered":"https:\/\/visotek.vn\/blog\/?p=443"},"modified":"2025-04-21T09:32:44","modified_gmt":"2025-04-21T09:32:44","slug":"tim-hieu-ve-goc-nhin-cua-camera-quan-sat","status":"publish","type":"post","link":"https:\/\/visotek.vn\/blog\/tim-hieu-ve-goc-nhin-cua-camera-quan-sat.html","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 g\u00f3c nh\u00ecn c\u1ee7a Camera quan s\u00e1t"},"content":{"rendered":"

Hi\u1ec7n nay tr\u00ean th\u1ecb tr\u01b0\u1eddng c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1c lo\u1ea1i Camera quan s\u00e1t v\u1edbi nhi\u1ec1u ch\u1ee7ng lo\u1ea1i kh\u00e1c nhau, c\u0169ng ch\u00ednh v\u00ec r\u1ea5t nhi\u1ec1u lo\u1ea1i n\u00ean kh\u00e1ch h\u00e0ng th\u01b0\u1eddng \u0111\u1eb7t c\u00e2u h\u1ecfi v\u1ec1 cho ch\u00fang t\u00f4i v\u1ec1 “G\u00f3c nh\u00ecn c\u1ee7a Camera quan s\u00e1t” \u0111\u1ec3 gi\u00fap qu\u00fd kh\u00e1ch h\u00e0ng c\u00f3 th\u00eam th\u00f4ng tin v\u1ec1 n\u00f3 ch\u00fang t\u00f4i xin gi\u1edbi thi\u1ec7u b\u00e0i vi\u1ebft v\u1ec1 T\u00ecm hi\u1ec3u g\u00f3c nh\u00ecn c\u1ee7a Camera quan s\u00e1t<\/a>.<\/p>\n

\"T\u00ecm

T\u00ecm hi\u1ec3u v\u1ec1 g\u00f3c nh\u00ecn c\u1ee7a Camera quan s\u00e1t<\/p><\/div>\n

G\u00f3c quan s\u00e1t c\u1ee7a camera l\u00e0 g\u00ec?<\/h2>\n

G\u00f3c nh\u00ecn (g\u00f3c quan s\u00e1t) c\u1ee7a camera \u0111\u01b0\u1ee3c xem l\u00e0 \u0111\u1ed9 r\u1ed9ng, \u0111\u1ed9 m\u1edf c\u1ee7a v\u00f9ng quan s\u00e1t m\u00e0 camera c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c. Ch\u00ednh v\u00ec th\u1ebf, camera c\u00f3 g\u00f3c nh\u00ecn c\u00e0ng r\u1ed9ng th\u00ec c\u00e0ng mang l\u1ea1i h\u00ecnh \u1ea3nh \u0111\u1ea7y \u0111\u1ee7, gi\u00fap ch\u00fang ta th\u1ea5y \u0111\u01b0\u1ee3c kh\u00f4ng gian m\u1ed9t c\u00e1ch bao qu\u00e1t h\u01a1n so v\u1edbi camera c\u00f3 g\u00f3c h\u1eb9p.<\/p>\n

G\u00f3c nh\u00ecn v\u00e0 \u1ed1ng k\u00ednh<\/h2>\n

Th\u00f4ng th\u01b0\u1eddng, ch\u00fang ta hay nh\u00ecn th\u1ea5y camera ghi lens 3.6mm ho\u1eb7c \u1ed1ng k\u00ednh 3.6mm, 4mm, 4.6mm, 8mm, 16mm\u2026 \u0110\u00e2y ch\u00ednh l\u00e0 th\u00f4ng s\u1ed1 c\u1ee7a \u1ed1ng k\u00ednh camera. \u1ed0ng k\u00ednh (Lens) l\u00e0 th\u1ea5u k\u00ednh h\u1ed9i t\u1ee5 h\u00ecnh \u1ea3nh v\u1ec1 chip c\u1ea3m bi\u1ebfn h\u00ecnh \u1ea3nh. C\u00f3 nhi\u1ec1u c\u00e1ch ph\u00e2n lo\u1ea1i \u1ed1ng k\u00ednh nh\u01b0ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n theo hai lo\u1ea1i ch\u00ednh: \u0111a ti\u00eau c\u1ef1 v\u00e0 ti\u00eau c\u1ef1 c\u1ed1 \u0111\u1ecbnh. \u1ed0ng k\u00ednh c\u00f3 \u0111\u1ed9 d\u00e0i ti\u00eau c\u1ef1 c\u00e0ng l\u1edbn th\u00ec quan s\u00e1t c\u00e0ng xa v\u00e0 g\u00f3c nh\u00ecn c\u1ee7a camera quan s\u00e1t h\u1eb9p l\u1ea1i v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Ngo\u00e0i ra g\u00f3c nh\u00ecn c\u1ee7a \u1ed1ng k\u00ednh c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o ti\u1ebft di\u1ec7n chip c\u1ea3m bi\u1ebfn h\u00ecnh \u1ea3nh, ti\u1ebft di\u1ec7n ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u l\u00e0 1\/3\u201d.<\/p>\n

\"\u0110\u1ec3

\u0110\u1ec3 l\u1ef1a ch\u1ecdn \u1ed1ng k\u00ednh cho ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u tham kh\u1ea3o h\u00ecnh tr\u00ean \u0111\u00e2y<\/p><\/div>\n

B\u1ea3ng qui \u0111\u1ed5i \u1ed1ng k\u00ednh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh g\u00f3c nh\u00ecn<\/h2>\n
\"B\u1ea3ng

B\u1ea3ng qui \u0111\u1ed5i \u1ed1ng k\u00ednh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh g\u00f3c nh\u00ecn<\/p><\/div>\n

Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn g\u00f3c quan s\u00e1t camera<\/h2>\n

Ti\u00eau c\u1ef1<\/h3>\n

Ti\u00eau c\u1ef1 l\u00e0 kho\u1ea3ng c\u00e1ch quang h\u1ecdc t\u00ednh t\u1eeb t\u00e2m \u1ed1ng k\u00ednh \u0111\u1ebfn \u0111i\u1ec3m m\u00e0 c\u00e1c tia s\u00e1ng h\u1ed9i t\u1ee5 \u0111\u1ec3 t\u1ea1o th\u00e0nh h\u00ecnh \u1ea3nh s\u1eafc n\u00e9t nh\u1ea5t c\u1ee7a v\u1eadt th\u1ec3 v\u00e0 \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1ee3ng b\u1eb1ng \u0111\u01a1n v\u1ecb milimet.<\/p>\n

Nh\u01b0 v\u1eady, ti\u00eau c\u1ef1 c\u00e0ng l\u1edbn s\u1ebd cho ra g\u00f3c nh\u00ecn tr\u00ean camera c\u00e0ng h\u1eb9p c\u00f9ng h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c ph\u00f3ng \u0111\u1ea1i so v\u1edbi th\u1ef1c t\u1ebf. N\u00f3 c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 vi\u1ec7c b\u1ea1n b\u1eadt t\u00ednh n\u0103ng zoom khi ch\u1ee5p \u1ea3nh tr\u00ean c\u00e1c thi\u1ebft b\u1ecb smartphone, m\u00e1y \u1ea3nh,… tuy nhi\u00ean, khung c\u1ea3nh thu \u0111\u01b0\u1ee3c s\u1ebd gi\u1ea3m \u0111i \u0111\u00e1ng k\u1ec3 t\u00f9y theo \u0111\u1ed9 l\u1edbn ti\u00eau c\u1ef1.<\/p>\n

\u0110\u1ed1i v\u1edbi ti\u00eau c\u1ef1 c\u00e0ng nh\u1ecf, mang l\u1ea1i g\u00f3c nh\u00ecn r\u1ed9ng tr\u00ean camera v\u00e0 \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i c\u00e0ng th\u1ea5p, h\u00ecnh \u1ea3nh ch\u1ee7 th\u1ec3 thu \u0111\u01b0\u1ee3c c\u00f3 ph\u1ea7n nh\u1ecf \u0111i nh\u01b0ng \u0111\u1ed5i l\u1ea1i khung c\u1ea3nh xung quanh m\u00e0 camera thu \u0111\u01b0\u1ee3c s\u1ebd l\u1edbn d\u1ea7n n\u1ebfu m\u1ee9c ti\u00eau c\u1ef1 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf d\u1ea7n.<\/p>\n

V\u1eadt ch\u1eafn<\/h3>\n

V\u1eadt ch\u1eafn \u0111\u01b0\u1ee3c xem l\u00e0 y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ph\u1ea1m vi m\u00e0 camera gi\u00e1m s\u00e1t c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c, l\u00e0m ph\u00e1t sinh \u0111i\u1ec3m m\u00f9 khi\u1ebfn h\u00ecnh \u1ea3nh thu l\u1ea1i kh\u00f4ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7. V\u00ec th\u1ebf, ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra xem ph\u00eda tr\u01b0\u1edbc \u1ed1ng k\u00ednh c\u00f3 xu\u1ea5t hi\u1ec7n v\u1eadt c\u1ea3n hay kh\u00f4ng nh\u1eb1m mang l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh, video m\u1ed9t c\u00e1ch t\u1ed1t nh\u1ea5t.<\/p>\n

C\u00e1c b\u01b0\u1edbc t\u00ednh g\u00f3c quan s\u00e1t c\u1ee7a camera \u0111\u01a1n gi\u1ea3n<\/h2>\n

\u0110\u1ec3 t\u00ecm \u0111\u01b0\u1ee3c g\u00f3c \u0111\u1eb7t camera ph\u00f9 h\u1ee3p b\u1ea1n n\u00ean t\u00ednh to\u00e1n k\u1ef9 l\u01b0\u1ee1ng v\u1ec1 g\u00f3c quay camera. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 3 b\u01b0\u1edbc t\u00ednh g\u00f3c quan s\u00e1t c\u1ee7a camera \u0111\u01a1n gi\u1ea3n m\u00e0 b\u1ea1n n\u00ean tham kh\u1ea3o:<\/p>\n

B\u01b0\u1edbc 1: T\u00ednh g\u00f3c m\u1edf c\u1ee7a \u1ed1ng k\u00ednh<\/h3>\n

G\u00f3c m\u1edf c\u1ee7a \u1ed1ng k\u00ednh camera ph\u1ee5 thu\u1ed9c v\u00e0o ti\u00eau c\u1ef1 c\u1ee7a \u1ed1ng k\u00ednh v\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb camera \u0111\u1ebfn v\u1ecb tr\u00ed c\u1ea7n quan s\u00e1t. Khi 2 y\u1ebfu t\u1ed1 n\u00e0y thay \u0111\u1ed5i th\u00ec g\u00f3c qu\u00e9t camera c\u0169ng thay \u0111\u1ed5i theo, \u0111i\u1ec1u n\u00e0y s\u1ebd khi\u1ebfn b\u1ea1n c\u00f3 nh\u1eefng v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t camera kh\u00f4ng gi\u1ed1ng nhau.<\/p>\n

\u0110\u1ec3 t\u00ednh g\u00f3c m\u1edf c\u1ee7a camera quan s\u00e1t b\u1ea1n s\u1ebd c\u0103n c\u1ee9 v\u00e0o k\u00edch c\u1ee1 c\u1ea3m bi\u1ebfn h\u00ecnh c\u1ee7a camera \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng con s\u1ed1 ch\u00ednh x\u00e1c, b\u1ea1n c\u1ea7n l\u01b0u \u00fd nh\u1eefng th\u00f4ng s\u1ed1 sau:<\/p>\n

    \n
  • f (mm): \u0110\u1ed9 d\u00e0i ti\u00eau c\u1ef1<\/li>\n
  • L (m): Kho\u1ea3ng c\u00e1ch t\u1eeb camera \u0111\u1ebfn v\u1ecb tr\u00ed c\u1ea7n quan s\u00e1t<\/li>\n
  • CCD: C\u1ea3m bi\u1ebfn camera<\/li>\n
  • W (m): Chi\u1ec1u r\u1ed9ng khung quan s\u00e1t<\/li>\n
  • H (m): Chi\u1ec1u cao khung quan s\u00e1t<\/li>\n
  • Diagonal (m): \u0110\u1ed9 ch\u00e9o khung quan s\u00e1t<\/li>\n
  • W (deg): G\u00f3c m\u1edf ngang<\/li>\n
  • H (deg): G\u00f3c m\u1edf h\u1eb9p<\/li>\n
  • D (deg): G\u00f3c m\u1edf ch\u00e9o<\/li>\n<\/ul>\n

    V\u1edbi c\u1ea3m bi\u1ebfn c\u1ee7a camera quan s\u00e1t th\u00f4ng th\u01b0\u1eddng s\u1ebd c\u00f3 3 k\u00edch c\u1ee1 l\u00e0 1\/2, 1\/3, \u00bc, \u1ee9ng v\u1edbi m\u1ed7i k\u00edch th\u01b0\u1edbc s\u1ebd c\u00f3 nh\u1eefng ch\u1ec9 s\u1ed1 kh\u00e1c nhau. T\u00f9y v\u00e0o nhu c\u1ea7u quan s\u00e1t c\u1ee7a m\u1ed7i ng\u01b0\u1eddi, s\u1ebd c\u00f3 nh\u1eefng l\u1ef1a ch\u1ecdn c\u1ea3m bi\u1ebfn camera ph\u00f9 h\u1ee3p.<\/p>\n

    B\u01b0\u1edbc 2: L\u1ef1a ch\u1ecdn \u0111\u1ed9 d\u00e0i ti\u00eau c\u1ef1 \u1ed1ng k\u00ednh<\/h3>\n

    Ch\u1ecdn ti\u00eau c\u1ef1 \u1ed1ng k\u00ednh ph\u00f9 h\u1ee3p s\u1ebd gi\u00fap b\u1ea1n quan s\u00e1t h\u00ecnh \u1ea3nh r\u00f5 n\u00e9t h\u01a1n r\u1ea5t nhi\u1ec1u. D\u1ef1a v\u00e0o nhu c\u1ea7u quan s\u00e1t, c\u0103n c\u1ee9 theo chi\u1ec1u r\u1ed9ng, chi\u1ec1u cao m\u00e0 ta c\u00f3 th\u1ec3 c\u00f3 nh\u1eefng l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p.<\/p>\n

    B\u01b0\u1edbc 3: T\u00ednh kho\u1ea3ng c\u00e1ch l\u1eafp \u0111\u1eb7t camera<\/h3>\n

    Khi t\u00ednh to\u00e1n kho\u1ea3ng c\u00e1ch l\u1eafp \u0111\u1eb7t camera gi\u00e1m s\u00e1t, b\u1ea1n n\u00ean ch\u00fa \u00fd v\u00e0o \u0111\u1ed9 d\u00e0i ti\u00eau c\u1ef1 v\u00e0 g\u00f3c m\u1edf h\u1eb9p, g\u00f3c m\u1edf ngang. Tr\u01b0\u1eddng h\u1ee3p nh\u1eefng ch\u1ec9 s\u1ed1 n\u00e0y thay \u0111\u1ed5i th\u00ec kho\u1ea3ng c\u00e1ch l\u1eafp \u0111\u1eb7t camera c\u0169ng thay \u0111\u1ed5i theo.<\/p>\n

    Th\u00f4ng th\u01b0\u1eddng kho\u1ea3ng c\u00e1ch l\u1eafp \u0111\u1eb7t camera gi\u00e1m s\u00e1t s\u1ebd dao \u0111\u1ed9ng t\u1eeb 3 \u2013 6 m v\u1edbi ti\u00eau c\u1ef1 \u1ed1ng k\u00ednh camera dao \u0111\u1ed9ng t\u1eeb 40 \u2013 45 cm. \u0110\u00e2y c\u00f3 th\u1ec3 coi l\u00e0 v\u1ecb tr\u00ed l\u00fd t\u01b0\u1edfng nh\u1ea5t \u0111\u1ec3 c\u00f3 th\u1ec3 l\u1eafp \u0111\u1eb7t camera quan s\u00e1t v\u00e0 quan s\u00e1t \u0111\u01b0\u1ee3c h\u1ea7u h\u1ebft khung c\u1ea3nh. V\u1edbi ti\u00eau c\u1ef1 kh\u00e1c nhau th\u00ec v\u1ecb tr\u00ed \u0111\u1eb7t c\u0169ng kh\u00e1c nhau, b\u1ea1n c\u00f3 th\u1ec3 \u01b0\u1edbm th\u1eed v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t camera \u0111\u1ec3 ch\u1ecdn ra v\u1ecb tr\u00ed ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n

    C\u00e1ch l\u1eafp \u0111\u1eb7t theo g\u00f3c quan s\u00e1t camera<\/h2>\n

    \u0110\u1ec3 l\u1eafp camera \u0111\u1ea3m b\u1ea3o quan s\u00e1t \u0111\u01b0\u1ee3c h\u1ebft c\u00e1c v\u1ecb tr\u00ed, b\u1ea1n n\u00ean tham kh\u1ea3o c\u00e1ch l\u1eafp \u0111\u1eb7t theo g\u00f3c quan s\u00e1t camera d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n

      \n
    • X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ea7n quan s\u00e1t: Th\u00f4ng th\u01b0\u1eddng, nh\u1eefng khu v\u1ef1c quan tr\u1ecdng v\u00e0 c\u1ea7n quan s\u00e1t trong nh\u00e0 nh\u01b0: c\u1eeda ra v\u00e0o, ph\u00f2ng kh\u00e1ch, b\u1ebfp, h\u1ea7m \u0111\u1ec3 xe ho\u1eb7c s\u00e2n sau.<\/li>\n
    • L\u1eadp k\u1ebf ho\u1ea1ch l\u1eafp \u0111\u1eb7t: C\u1ea7n c\u00f3 s\u01a1 \u0111\u1ed3 nh\u00e0 v\u00e0 \u0111\u00e1nh d\u1ea5u c\u00e1c v\u1ecb tr\u00ed c\u1ea7n l\u1eafp camera. Ch\u00fa \u00fd v\u1ecb tr\u00ed \u0111\u1ec3 camera c\u00f3 th\u1ec3 quan s\u00e1t r\u00f5 r\u00e0ng v\u00e0 kh\u00f4ng b\u1ecb che khu\u1ea5t b\u1edfi v\u1eadt c\u1ea3n.<\/li>\n
    • Ch\u1ecdn camera ph\u00f9 h\u1ee3p: T\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u quan s\u00e1t v\u00e0 ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea1n, c\u00f3 nhi\u1ec1u lo\u1ea1i camera kh\u00e1c nhau nh\u01b0 camera ngo\u00e0i tr\u1eddi, camera trong nh\u00e0, camera IP ho\u1eb7c camera kh\u00f4ng d\u00e2y.<\/li>\n
    • \u0110\u1eb7t camera \u1edf c\u00e1c \u0111i\u1ec3m ch\u1ed1t: L\u1eafp \u0111\u1eb7t camera \u1edf c\u00e1c \u0111i\u1ec3m ch\u1ed1t \u0111\u1ec3 quan s\u00e1t to\u00e0n b\u1ed9 khu v\u1ef1c. V\u00ed d\u1ee5, tr\u00ean c\u1eeda ra v\u00e0o, g\u00f3c ph\u00f2ng, ho\u1eb7c tr\u00ean t\u01b0\u1eddng nh\u00ecn xu\u1ed1ng khu v\u1ef1c quan tr\u1ecdng.<\/li>\n<\/ul>\n

      K\u1ebft n\u1ed1i v\u00e0 c\u1ea5u h\u00ecnh<\/h2>\n

      Sau khi l\u1eafp \u0111\u1eb7t, b\u1ea1n c\u1ea7n k\u1ebft n\u1ed1i c\u00e1c camera v\u1edbi h\u1ec7 th\u1ed1ng quan s\u00e1t, \u0111i\u1ec1u ch\u1ec9nh g\u00f3c nh\u00ecn, \u0111\u1ed9 nh\u1ea1y c\u1ea3m v\u00e0 c\u00e1c c\u00e0i \u0111\u1eb7t kh\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o camera ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3.<\/p>\n

      Ki\u1ec3m tra v\u00e0 theo d\u00f5i<\/h2>\n

      Ki\u1ec3m tra k\u1ebft qu\u1ea3 quan s\u00e1t t\u1eeb camera \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c v\u1ecb tr\u00ed quan tr\u1ecdng trong nh\u00e0 \u0111\u01b0\u1ee3c quan s\u00e1t m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m m\u00f9.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Hi\u1ec7n nay tr\u00ean th\u1ecb tr\u01b0\u1eddng c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1c lo\u1ea1i Camera quan s\u00e1t v\u1edbi nhi\u1ec1u ch\u1ee7ng lo\u1ea1i kh\u00e1c nhau, c\u0169ng ch\u00ednh v\u00ec r\u1ea5t nhi\u1ec1u lo\u1ea1i n\u00ean kh\u00e1ch h\u00e0ng th\u01b0\u1eddng \u0111\u1eb7t c\u00e2u h\u1ecfi v\u1ec1 cho ch\u00fang t\u00f4i v\u1ec1 “G\u00f3c nh\u00ecn c\u1ee7a Camera quan s\u00e1t” \u0111\u1ec3 gi\u00fap qu\u00fd kh\u00e1ch h\u00e0ng c\u00f3 th\u00eam th\u00f4ng tin v\u1ec1 n\u00f3 ch\u00fang […]<\/p>\n","protected":false},"author":1,"featured_media":444,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tu-van-lap-dat-camera"],"yoast_head":"\nT\u00ecm hi\u1ec3u v\u1ec1 g\u00f3c nh\u00ecn c\u1ee7a Camera quan s\u00e1t<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u v\u1ec1 g\u00f3c nh\u00ecn c\u1ee7a Camera quan s\u00e1t - 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