{"id":584816,"date":"2026-08-17T09:52:31","date_gmt":"2026-08-17T02:52:31","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=584816"},"modified":"2026-08-17T09:52:40","modified_gmt":"2026-08-17T02:52:40","slug":"phoi-sang-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/phoi-sang-la-gi\/","title":{"rendered":"Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec? Tam gi\u00e1c ph\u01a1i s\u00e1ng trong nhi\u1ebfp \u1ea3nh"},"content":{"rendered":"<p>B\u1ea1n t\u1eebng ch\u1ee5p m\u1ed9t b\u1ee9c \u1ea3nh m\u00e0 b\u1ea7u tr\u1eddi tr\u1eafng x\u00f3a ho\u1eb7c ch\u1ee7 th\u1ec3 t\u1ed1i om d\u00f9 \u0111\u1ee9ng ngay gi\u1eefa khung h\u00ecnh? \u0110\u00f3 l\u00e0 h\u1eadu qu\u1ea3 c\u1ee7a vi\u1ec7c &#8220;ph\u01a1i s\u00e1ng&#8221; ch\u01b0a \u0111\u00fang. Ph\u01a1i s\u00e1ng quy\u1ebft \u0111\u1ecbnh b\u1ee9c \u1ea3nh s\u00e1ng hay t\u1ed1i, v\u00e0 ba y\u1ebfu t\u1ed1 t\u1ea1o n\u00ean n\u00f3 \u2013 kh\u1ea9u \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp, ISO \u2013 lu\u00f4n \u0111\u00e1nh \u0111\u1ed5i l\u1eabn nhau. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y gi\u00fap b\u1ea1n hi\u1ec3u tam gi\u00e1c ph\u01a1i s\u00e1ng, c\u00e1ch \u0111\u1ecdc histogram \u0111\u1ec3 bi\u1ebft \u1ea3nh th\u1eeba hay thi\u1ebfu s\u00e1ng, v\u00e0 c\u00e1ch t\u1ef1 ch\u1ec9nh ph\u01a1i s\u00e1ng tr\u00ean \u0111i\u1ec7n tho\u1ea1i thay v\u00ec ph\u00f3 m\u1eb7c cho ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng.<\/p>\n<h2>Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec?<\/h2>\n<p>Ph\u01a1i s\u00e1ng (exposure) l\u00e0 l\u01b0\u1ee3ng \u00e1nh s\u00e1ng m\u00e0 c\u1ea3m bi\u1ebfn m\u00e1y \u1ea3nh ho\u1eb7c camera \u0111i\u1ec7n tho\u1ea1i thu nh\u1eadn trong m\u1ed9t l\u1ea7n ch\u1ee5p, quy\u1ebft \u0111\u1ecbnh b\u1ee9c \u1ea3nh s\u00e1ng, t\u1ed1i hay v\u1eeba \u0111\u1ee7.<\/p>\n<p>\u1ea2nh &#8220;\u0111\u1ee7 s\u00e1ng&#8221; gi\u1eef \u0111\u01b0\u1ee3c chi ti\u1ebft \u1edf c\u1ea3 v\u00f9ng s\u00e1ng nh\u1ea5t v\u00e0 t\u1ed1i nh\u1ea5t, kh\u00f4ng ch\u00e1y tr\u1eafng hay \u0111en k\u1ecbt. L\u01b0\u1ee3ng s\u00e1ng n\u00e0y do ba y\u1ebfu t\u1ed1 c\u00f9ng quy\u1ebft \u0111\u1ecbnh: kh\u1ea9u \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp v\u00e0 ISO. Ch\u1ec9 c\u1ea7n m\u1ed9t y\u1ebfu t\u1ed1 thay \u0111\u1ed5i, hai y\u1ebfu t\u1ed1 c\u00f2n l\u1ea1i ph\u1ea3i b\u00f9 tr\u1eeb \u2013 \u0111\u00f3 l\u00e0 l\u00fd do g\u1ecdi l\u00e0 &#8220;tam gi\u00e1c ph\u01a1i s\u00e1ng&#8221;.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-584817\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-1.jpg\" alt=\"phoi-sang-la-gi-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Tam gi\u00e1c ph\u01a1i s\u00e1ng: kh\u1ea9u \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp, ISO<\/h2>\n<p>Ba y\u1ebfu t\u1ed1 n\u00e0y lu\u00f4n r\u00e0ng bu\u1ed9c nhau: t\u0103ng m\u1ed9t y\u1ebfu t\u1ed1 \u0111\u1ec3 \u1ea3nh s\u00e1ng h\u01a1n th\u01b0\u1eddng bu\u1ed9c b\u1ea1n gi\u1ea3m y\u1ebfu t\u1ed1 kh\u00e1c \u0111\u1ec3 tr\u00e1nh ch\u00e1y s\u00e1ng.<\/p>\n<ul>\n<li><strong>Kh\u1ea9u \u0111\u1ed9 (f\/):<\/strong> s\u1ed1 f c\u00e0ng nh\u1ecf (f\/1.8) l\u1ed7 m\u1edf c\u00e0ng l\u1edbn, \u00e1nh s\u00e1ng v\u00e0o nhi\u1ec1u h\u01a1n, h\u1eadu c\u1ea3nh m\u1edd h\u01a1n.<\/li>\n<li><strong>T\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp:<\/strong> th\u1eddi gian c\u1ea3m bi\u1ebfn &#8220;m\u1edf m\u1eaft&#8221; \u0111\u00f3n s\u00e1ng, v\u00ed d\u1ee5 1\/125s. Tr\u1eadp c\u00e0ng ch\u1eadm, \u1ea3nh c\u00e0ng s\u00e1ng nh\u01b0ng d\u1ec5 rung tay.<\/li>\n<li><strong>ISO:<\/strong> \u0111\u1ed9 nh\u1ea1y s\u00e1ng c\u1ee7a c\u1ea3m bi\u1ebfn. ISO 100 cho \u1ea3nh s\u1ea1ch, chi ti\u1ebft; ISO c\u00e0ng cao \u1ea3nh c\u00e0ng s\u00e1ng nh\u01b0ng c\u00e0ng nhi\u1ec1u nhi\u1ec5u.<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>Y\u1ebfu t\u1ed1<\/th>\n<th>T\u0103ng l\u00ean th\u00ec \u1ea3nh<\/th>\n<th>\u0110\u00e1nh \u0111\u1ed5i<\/th>\n<th>Khi n\u00e0o \u01b0u ti\u00ean<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kh\u1ea9u \u0111\u1ed9 (m\u1edf to, f nh\u1ecf)<\/td>\n<td>S\u00e1ng h\u01a1n<\/td>\n<td>H\u1eadu c\u1ea3nh m\u1edd, v\u00f9ng n\u00e9t m\u1ecfng h\u01a1n<\/td>\n<td>Ch\u00e2n dung, thi\u1ebfu s\u00e1ng<\/td>\n<\/tr>\n<tr>\n<td>T\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp (ch\u1eadm h\u01a1n)<\/td>\n<td>S\u00e1ng h\u01a1n<\/td>\n<td>D\u1ec5 rung, v\u1eadt chuy\u1ec3n \u0111\u1ed9ng nh\u00f2e<\/td>\n<td>Ch\u1ee5p \u0111\u00eam c\u00f3 ch\u00e2n m\u00e1y<\/td>\n<\/tr>\n<tr>\n<td>ISO (cao h\u01a1n)<\/td>\n<td>S\u00e1ng h\u01a1n<\/td>\n<td>\u1ea2nh nhi\u1ec5u h\u1ea1t, gi\u1ea3m chi ti\u1ebft<\/td>\n<td>Ch\u1ec9 t\u0103ng khi h\u1ebft d\u01b0 \u0111\u1ecba hai y\u1ebfu t\u1ed1 tr\u00ean<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Nguy\u00ean t\u1eafc th\u1ef1c d\u1ee5ng: \u01b0u ti\u00ean ch\u1ec9nh kh\u1ea9u \u0111\u1ed9 v\u00e0 t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp tr\u01b0\u1edbc, ch\u1ec9 t\u0103ng ISO khi \u1ea3nh v\u1eabn thi\u1ebfu s\u00e1ng, v\u00ec ISO l\u00e0 y\u1ebfu t\u1ed1 &#8220;hy sinh&#8221; ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh nhi\u1ec1u nh\u1ea5t.<\/p>\n<h2>EV v\u00e0 b\u00f9 tr\u1eeb ph\u01a1i s\u00e1ng (exposure compensation)<\/h2>\n<p>EV (Exposure Value) l\u00e0 \u0111\u01a1n v\u1ecb \u0111o m\u1ee9c s\u00e1ng t\u1ed5ng th\u1ec3 c\u1ee7a \u1ea3nh; b\u00f9 tr\u1eeb ph\u01a1i s\u00e1ng l\u00e0 thao t\u00e1c c\u1ed9ng ho\u1eb7c tr\u1eeb EV \u0111\u1ec3 ch\u1ee7 \u0111\u1ed9ng l\u00e0m \u1ea3nh s\u00e1ng h\u01a1n ho\u1eb7c t\u1ed1i h\u01a1n m\u1ee9c m\u00e1y \u0111o t\u1ef1 \u0111\u1ed9ng \u0111\u1ec1 xu\u1ea5t.<\/p>\n<p>Tr\u00ean camera \u0111i\u1ec7n tho\u1ea1i, thanh b\u00f9 tr\u1eeb ph\u01a1i s\u00e1ng hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng bi\u1ec3u t\u01b0\u1ee3ng m\u1eb7t tr\u1eddi ho\u1eb7c d\u1ea5u +\/- khi b\u1ea1n ch\u1ea1m l\u1ea5y n\u00e9t. K\u00e9o l\u00ean \u0111\u1ec3 t\u0103ng EV, k\u00e9o xu\u1ed1ng \u0111\u1ec3 gi\u1ea3m EV, th\u01b0\u1eddng trong kho\u1ea3ng -2EV \u0111\u1ebfn +2EV.<\/p>\n<p>B\u00f9 tr\u1eeb h\u1eefu \u00edch khi c\u1ea3nh t\u01b0\u01a1ng ph\u1ea3n m\u1ea1nh d\u1ec5 \u0111\u00e1nh l\u1eeba m\u00e1y \u0111o s\u00e1ng: ng\u01b0\u1ee3c s\u00e1ng c\u1ea7n +EV, n\u1ec1n tr\u1eafng nh\u01b0 tuy\u1ebft c\u1ea7n +EV v\u00ec m\u00e1y hay l\u00e0m \u1ea3nh x\u00e1m \u0111i, c\u1ea3nh t\u1ed1i m\u00e0u c\u1ea7n -EV \u0111\u1ec3 tr\u00e1nh ch\u00e1y s\u00e1ng gi\u1ea3.<\/p>\n<h2>C\u00e1c ch\u1ebf \u0111\u1ed9 \u0111o s\u00e1ng ph\u1ed5 bi\u1ebfn<\/h2>\n<p>Ch\u1ebf \u0111\u1ed9 \u0111o s\u00e1ng quy\u1ebft \u0111\u1ecbnh m\u00e1y &#8220;nh\u00ecn&#8221; v\u00e0o v\u00f9ng n\u00e0o \u0111\u1ec3 t\u00ednh ph\u01a1i s\u00e1ng chu\u1ea9n.<\/p>\n<ul>\n<li><strong>\u0110o trung b\u00ecnh to\u00e0n khung:<\/strong> m\u1eb7c \u0111\u1ecbnh tr\u00ean \u0111a s\u1ed1 \u0111i\u1ec7n tho\u1ea1i, h\u1ee3p c\u1ea3nh s\u00e1ng \u0111\u1ec1u.<\/li>\n<li><strong>\u0110o trung t\u00e2m:<\/strong> \u01b0u ti\u00ean v\u00f9ng gi\u1eefa khung h\u00ecnh, h\u1ee3p khi ch\u1ee7 th\u1ec3 \u1edf gi\u1eefa.<\/li>\n<li><strong>\u0110o \u0111i\u1ec3m (spot):<\/strong> ch\u1ec9 \u0111o \u0111\u00fang \u0111i\u1ec3m ch\u1ea1m l\u1ea5y n\u00e9t, ch\u00ednh x\u00e1c nh\u1ea5t cho ch\u00e2n dung ng\u01b0\u1ee3c s\u00e1ng.<\/li>\n<\/ul>\n<p>Ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng th\u01b0\u1eddng t\u1ef1 ch\u1ecdn ki\u1ec3u \u0111o s\u00e1ng ph\u00f9 h\u1ee3p; ch\u1ebf \u0111\u1ed9 Pro m\u1edbi cho b\u1ea1n ch\u1ee7 \u0111\u1ed9ng chuy\u1ec3n \u0111\u1ed5i.<\/p>\n<h2>Nh\u1eadn bi\u1ebft \u1ea3nh th\u1eeba s\u00e1ng, thi\u1ebfu s\u00e1ng v\u00e0 c\u00e1ch \u0111\u1ecdc histogram<\/h2>\n<p>Histogram l\u00e0 bi\u1ec3u \u0111\u1ed3 ph\u00e2n b\u1ed1 \u0111\u1ed9 s\u00e1ng c\u1ee7a \u1ea3nh, gi\u00fap b\u1ea1n bi\u1ebft \u1ea3nh ch\u00e1y s\u00e1ng hay t\u1ed1i \u0111en m\u00e0 kh\u00f4ng c\u1ea7n nh\u00ecn m\u00e0n h\u00ecnh d\u01b0\u1edbi n\u1eafng g\u1eaft.<\/p>\n<p>Tr\u1ee5c ngang ch\u1ea1y t\u1eeb \u0111en (tr\u00e1i) \u0111\u1ebfn tr\u1eafng (ph\u1ea3i), tr\u1ee5c d\u1ecdc l\u00e0 s\u1ed1 \u0111i\u1ec3m \u1ea3nh \u1edf m\u1ee9c s\u00e1ng \u0111\u00f3. D\u1ed3n s\u00e1t m\u00e9p ph\u1ea3i l\u00e0 ch\u00e1y s\u00e1ng, m\u1ea5t chi ti\u1ebft highlight; d\u1ed3n s\u00e1t m\u00e9p tr\u00e1i l\u00e0 thi\u1ebfu s\u00e1ng, m\u1ea5t chi ti\u1ebft v\u00f9ng t\u1ed1i. \u1ea2nh c\u00e2n b\u1eb1ng c\u00f3 \u0111\u1ed3 th\u1ecb tr\u1ea3i \u0111\u1ec1u, kh\u00f4ng ch\u1ea1m hai m\u00e9p.<\/p>\n<p>Kh\u00f4ng c\u00f3 histogram, b\u1ea1n v\u1eabn nh\u1eadn bi\u1ebft b\u1eb1ng m\u1eaft: \u1ea3nh th\u1eeba s\u00e1ng c\u00f3 v\u00f9ng tr\u1eddi ho\u1eb7c \u0111\u00e8n tr\u1eafng b\u1ec7t; \u1ea3nh thi\u1ebfu s\u00e1ng c\u00f3 v\u00f9ng b\u00f3ng t\u1ed1i \u0111en k\u1ecbt, kh\u00f4ng ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c chi ti\u1ebft.<\/p>\n<h2>C\u00e1ch ch\u1ec9nh ph\u01a1i s\u00e1ng th\u1ee7 c\u00f4ng tr\u00ean \u0111i\u1ec7n tho\u1ea1i<\/h2>\n<p>H\u1ea7u h\u1ebft \u0111i\u1ec7n tho\u1ea1i t\u1ea7m trung tr\u1edf l\u00ean \u0111\u1ec1u c\u00f3 c\u00e1ch \u0111\u1ec3 b\u1ea1n t\u1ef1 ki\u1ec3m so\u00e1t ph\u01a1i s\u00e1ng thay v\u00ec ph\u00f3 m\u1eb7c cho camera AI.<\/p>\n<p>Tr\u00ean Samsung v\u00e0 Xiaomi, v\u00e0o ch\u1ebf \u0111\u1ed9 <strong>Pro<\/strong> ho\u1eb7c <strong>Chuy\u00ean nghi\u1ec7p<\/strong> trong \u1ee9ng d\u1ee5ng camera, b\u1ea1n s\u1ebd th\u1ea5y c\u00e1c thanh ch\u1ec9nh ri\u00eang cho ISO, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp (S) v\u00e0 c\u00e2n b\u1eb1ng tr\u1eafng, k\u00e9o \u0111\u1ec3 xem tr\u01b0\u1edbc thay \u0111\u1ed5i ngay tr\u00ean khung h\u00ecnh.<\/p>\n<p>Tr\u00ean iPhone, ch\u1ea1m gi\u1eef v\u00e0o ch\u1ee7 th\u1ec3 \u0111\u1ec3 kh\u00f3a \u0111\u1ed3ng th\u1eddi AE (\u0111o s\u00e1ng) v\u00e0 AF (l\u1ea5y n\u00e9t) \u2013 khung v\u00e0ng &#8220;AE\/AF LOCK&#8221; xu\u1ea5t hi\u1ec7n; sau \u0111\u00f3 vu\u1ed1t l\u00ean ho\u1eb7c xu\u1ed1ng c\u1ea1nh khung \u0111\u1ec3 k\u00e9o thanh bi\u1ec3u t\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, t\u0103ng gi\u1ea3m \u0111\u1ed9 s\u00e1ng m\u00e0 kh\u00f4ng m\u1ea5t n\u00e9t. N\u1ebfu mu\u1ed1n t\u00ecm hi\u1ec3u s\u00e2u k\u1ef9 thu\u1eadt ch\u1ee5p ph\u01a1i s\u00e1ng d\u00e0i chuy\u00ean bi\u1ec7t tr\u00ean iPhone, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/cach-chup-anh-phoi-sang-tren-iphone\/\">c\u00e1ch ch\u1ee5p \u1ea3nh ph\u01a1i s\u00e1ng tr\u00ean iPhone<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-584818\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-2.jpg\" alt=\"phoi-sang-la-gi-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Ph\u01a1i s\u00e1ng l\u00e2u (long exposure) l\u00e0 g\u00ec?<\/h2>\n<p>Ph\u01a1i s\u00e1ng l\u00e2u l\u00e0 k\u1ef9 thu\u1eadt k\u00e9o d\u00e0i th\u1eddi gian m\u00e0n tr\u1eadp m\u1edf (v\u00e0i gi\u00e2y \u0111\u1ebfn v\u00e0i ph\u00fat) \u0111\u1ec3 ghi l\u1ea1i chuy\u1ec3n \u0111\u1ed9ng th\u00e0nh v\u1ec7t m\u1edd m\u01b0\u1ee3t, th\u01b0\u1eddng d\u00f9ng cho \u1ea3nh v\u1ec7t s\u00e1ng xe c\u1ed9 ban \u0111\u00eam, n\u01b0\u1edbc ch\u1ea3y m\u01b0\u1ee3t nh\u01b0 s\u01b0\u01a1ng ho\u1eb7c d\u1ea3i sao tr\u00ean b\u1ea7u tr\u1eddi.<\/p>\n<p>V\u00ec tr\u1eadp m\u1edf l\u00e2u, m\u00e1y r\u1ea5t d\u1ec5 rung, n\u00ean c\u1ea7n ch\u00e2n m\u00e1y c\u1ed1 \u0111\u1ecbnh v\u00e0 d\u00f9ng h\u1eb9n gi\u1edd ch\u1ee5p \u0111\u1ec3 tr\u00e1nh ch\u1ea1m tay l\u00fac b\u1ea5m n\u00fat. \u00c1nh s\u00e1ng c\u00e0ng y\u1ebfu, th\u1eddi gian ph\u01a1i s\u00e1ng c\u1ea7n c\u00e0ng l\u00e2u, \u0111\u1ed3ng th\u1eddi n\u00ean gi\u1eef ISO th\u1ea5p v\u00ec tr\u1eadp d\u00e0i \u0111\u00e3 b\u00f9 s\u00e1ng thay ISO.<\/p>\n<p>N\u1ebfu ch\u1ee7 \u0111\u1ec1 b\u1ea1n quan t\u00e2m l\u00e0 ghi l\u1ea1i chuy\u1ec3n \u0111\u1ed9ng k\u00e9o d\u00e0i theo th\u1eddi gian (m\u1eb7t tr\u1eddi l\u1eb7n, m\u00e2y tr\u00f4i) thay v\u00ec v\u1ec7t s\u00e1ng trong m\u1ed9t khung h\u00ecnh t\u0129nh, \u0111\u00f3 l\u00e0 k\u1ef9 thu\u1eadt kh\u00e1c g\u1ecdi l\u00e0 timelapse \u2013 xem th\u00eam \u1edf b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/timelapse-la-gi\/\">timelapse l\u00e0 g\u00ec<\/a> \u0111\u1ec3 ph\u00e2n bi\u1ec7t r\u00f5 hai kh\u00e1i ni\u1ec7m.<\/p>\n<h2>L\u1ed7i ph\u01a1i s\u00e1ng th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch x\u1eed l\u00fd<\/h2>\n<p>Ph\u1ea7n l\u1edbn \u1ea3nh h\u1ecfng v\u00ec ph\u01a1i s\u00e1ng sai r\u01a1i v\u00e0o v\u00e0i t\u00ecnh hu\u1ed1ng l\u1eb7p l\u1ea1i, nh\u1eadn di\u1ec7n \u0111\u00fang nguy\u00ean nh\u00e2n gi\u00fap s\u1eeda nhanh h\u01a1n ch\u1ee5p l\u1ea1i ng\u1eabu nhi\u00ean.<\/p>\n<ul>\n<li><strong>Ng\u01b0\u1ee3c s\u00e1ng (ch\u1ee7 th\u1ec3 t\u1ed1i, n\u1ec1n s\u00e1ng):<\/strong> ch\u1ea1m l\u1ea5y n\u00e9t \u0111\u00fang v\u00e0o m\u1eb7t ch\u1ee7 th\u1ec3 r\u1ed3i k\u00e9o thanh ph\u01a1i s\u00e1ng l\u00ean (+EV), ho\u1eb7c chuy\u1ec3n sang \u0111o s\u00e1ng \u0111i\u1ec3m.<\/li>\n<li><strong>Ch\u00e1y s\u00e1ng v\u00f9ng tr\u1eddi ho\u1eb7c \u0111\u00e8n:<\/strong> gi\u1ea3m EV, ho\u1eb7c tr\u00e1nh nh\u00ecn th\u1eb3ng v\u00e0o ngu\u1ed3n s\u00e1ng m\u1ea1nh; \u1edf ch\u1ebf \u0111\u1ed9 Pro, t\u0103ng t\u1ed1c \u0111\u1ed9 tr\u1eadp ho\u1eb7c \u0111\u00f3ng kh\u1ea9u (s\u1ed1 f l\u1edbn h\u01a1n).<\/li>\n<li><strong>\u1ea2nh t\u1ed1i, nhi\u1ec5u h\u1ea1t khi ch\u1ee5p \u0111\u00eam:<\/strong> gi\u1eef m\u00e1y \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 d\u00f9ng t\u1ed1c \u0111\u1ed9 tr\u1eadp ch\u1eadm h\u01a1n thay v\u00ec \u0111\u1ea9y ISO qu\u00e1 cao; b\u1eadt ch\u1ebf \u0111\u1ed9 ch\u1ee5p \u0111\u00eam chuy\u00ean d\u1ee5ng n\u1ebfu m\u00e1y h\u1ed7 tr\u1ee3.<\/li>\n<li><strong>\u1ea2nh nh\u00f2e v\u00ec rung tay:<\/strong> t\u0103ng t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp v\u00e0 b\u00f9 l\u1ea1i b\u1eb1ng c\u00e1ch m\u1edf kh\u1ea9u ho\u1eb7c t\u0103ng nh\u1eb9 ISO thay v\u00ec gi\u1eef nguy\u00ean t\u1ed1c \u0111\u1ed9 ch\u1eadm.<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-584819\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-3.jpg\" alt=\"phoi-sang-la-gi-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>N\u1eafm \u0111\u01b0\u1ee3c tam gi\u00e1c ph\u01a1i s\u00e1ng \u2013 kh\u1ea9u \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp, ISO \u2013 c\u00f9ng c\u00e1ch \u0111\u1ecdc histogram v\u00e0 b\u00f9 tr\u1eeb EV gi\u00fap b\u1ea1n ch\u1ee7 \u0111\u1ed9ng ki\u1ec3m so\u00e1t \u0111\u1ed9 s\u00e1ng c\u1ee7a \u1ea3nh thay v\u00ec ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng. Ch\u1ec9 c\u1ea7n luy\u1ec7n t\u1eadp v\u1edbi ch\u1ebf \u0111\u1ed9 Pro tr\u00ean \u0111i\u1ec7n tho\u1ea1i v\u00e0i l\u1ea7n, b\u1ea1n s\u1ebd quen tay v\u00e0 x\u1eed l\u00fd \u0111\u01b0\u1ee3c c\u1ea3 nh\u1eefng c\u1ea3nh kh\u00f3 nh\u01b0 ng\u01b0\u1ee3c s\u00e1ng hay ch\u1ee5p \u0111\u00eam. N\u1ebfu \u0111ang t\u00ecm \u0111i\u1ec7n tho\u1ea1i c\u00f3 camera h\u1ed7 tr\u1ee3 t\u1ed1t ch\u1ebf \u0111\u1ed9 ch\u1ee5p th\u1ee7 c\u00f4ng, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o th\u00eam c\u00e1c m\u1eabu m\u00e1y t\u1ea1i hoanghamobile.com.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-584820\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-4.jpg\" alt=\"phoi-sang-la-gi-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/08\/phoi-sang-la-gi-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 ph\u01a1i s\u00e1ng<\/h2>\n<h3>Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec trong nhi\u1ebfp \u1ea3nh?<\/h3>\n<p>Ph\u01a1i s\u00e1ng l\u00e0 l\u01b0\u1ee3ng \u00e1nh s\u00e1ng c\u1ea3m bi\u1ebfn thu nh\u1eadn trong m\u1ed9t l\u1ea7n ch\u1ee5p, quy\u1ebft \u0111\u1ecbnh \u1ea3nh s\u00e1ng, t\u1ed1i hay v\u1eeba \u0111\u1ee7, do kh\u1ea9u \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp v\u00e0 ISO c\u00f9ng chi ph\u1ed1i.<\/p>\n<h3>Tam gi\u00e1c ph\u01a1i s\u00e1ng g\u1ed3m nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o?<\/h3>\n<p>G\u1ed3m kh\u1ea9u \u0111\u1ed9 (f\/), t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp v\u00e0 ISO. Ba y\u1ebfu t\u1ed1 lu\u00f4n \u0111\u00e1nh \u0111\u1ed5i l\u1eabn nhau: t\u0103ng m\u1ed9t y\u1ebfu t\u1ed1 \u0111\u1ec3 s\u00e1ng h\u01a1n th\u01b0\u1eddng ph\u1ea3i gi\u1ea3m y\u1ebfu t\u1ed1 kh\u00e1c \u0111\u1ec3 tr\u00e1nh ch\u00e1y s\u00e1ng.<\/p>\n<h3>B\u00f9 tr\u1eeb ph\u01a1i s\u00e1ng (EV) d\u00f9ng khi n\u00e0o?<\/h3>\n<p>Khi c\u1ea3nh t\u01b0\u01a1ng ph\u1ea3n m\u1ea1nh khi\u1ebfn m\u00e1y \u0111o s\u00e1ng b\u1ecb \u0111\u00e1nh l\u1eeba, v\u00ed d\u1ee5 ng\u01b0\u1ee3c s\u00e1ng c\u1ea7n t\u0103ng EV, n\u1ec1n s\u00e1ng nh\u01b0 tuy\u1ebft c\u1ea7n t\u0103ng EV, c\u00f2n c\u1ea3nh t\u1ed1i c\u1ea7n gi\u1ea3m EV.<\/p>\n<h3>V\u00ec sao \u1ea3nh b\u1ecb ch\u00e1y s\u00e1ng d\u00f9 tr\u1eddi kh\u00f4ng qu\u00e1 n\u1eafng?<\/h3>\n<p>Th\u01b0\u1eddng do m\u00e1y \u0111o s\u00e1ng theo v\u00f9ng t\u1ed1i trong khung h\u00ecnh r\u1ed3i t\u1ef1 t\u0103ng s\u00e1ng c\u1ea3 \u1ea3nh, khi\u1ebfn v\u00f9ng s\u00e1ng nh\u01b0 b\u1ea7u tr\u1eddi b\u1ecb ch\u00e1y tr\u1eafng. Gi\u1ea3m EV ho\u1eb7c \u0111o s\u00e1ng \u0111i\u1ec3m s\u1ebd kh\u1eafc ph\u1ee5c.<\/p>\n<h3>L\u00e0m sao bi\u1ebft \u1ea3nh thi\u1ebfu s\u00e1ng hay th\u1eeba s\u00e1ng m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m?<\/h3>\n<p>Xem histogram: \u0111\u1ed3 th\u1ecb d\u1ed3n m\u00e9p tr\u00e1i l\u00e0 thi\u1ebfu s\u00e1ng, d\u1ed3n m\u00e9p ph\u1ea3i l\u00e0 th\u1eeba s\u00e1ng. Kh\u00f4ng c\u00f3 histogram, quan s\u00e1t v\u00f9ng s\u00e1ng nh\u1ea5t v\u00e0 t\u1ed1i nh\u1ea5t c\u00f2n gi\u1eef chi ti\u1ebft hay kh\u00f4ng.<\/p>\n<h3>\u0110i\u1ec7n tho\u1ea1i c\u00f3 ch\u1ec9nh ph\u01a1i s\u00e1ng th\u1ee7 c\u00f4ng \u0111\u01b0\u1ee3c kh\u00f4ng?<\/h3>\n<p>C\u00f3. Samsung v\u00e0 Xiaomi c\u00f3 ch\u1ebf \u0111\u1ed9 Pro\/Chuy\u00ean nghi\u1ec7p ch\u1ec9nh ri\u00eang ISO v\u00e0 t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp; iPhone cho kh\u00f3a AE\/AF r\u1ed3i k\u00e9o thanh m\u1eb7t tr\u1eddi \u0111\u1ec3 t\u0103ng gi\u1ea3m \u0111\u1ed9 s\u00e1ng.<\/p>\n<h3>ISO cao c\u00f3 l\u00e0m \u1ea3nh \u0111\u1eb9p h\u01a1n kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng h\u1eb3n. ISO cao gi\u00fap \u1ea3nh s\u00e1ng h\u01a1n khi thi\u1ebfu s\u00e1ng nh\u01b0ng \u0111\u00e1nh \u0111\u1ed5i b\u1eb1ng nhi\u1ec5u h\u1ea1t v\u00e0 gi\u1ea3m chi ti\u1ebft, ch\u1ec9 n\u00ean t\u0103ng khi \u0111\u00e3 h\u1ebft d\u01b0 \u0111\u1ecba kh\u1ea9u \u0111\u1ed9 v\u00e0 t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp.<\/p>\n<h3>Ph\u01a1i s\u00e1ng l\u00e2u kh\u00e1c g\u00ec ph\u01a1i s\u00e1ng th\u00f4ng th\u01b0\u1eddng?<\/h3>\n<p>Ph\u01a1i s\u00e1ng l\u00e2u k\u00e9o d\u00e0i th\u1eddi gian m\u00e0n tr\u1eadp \u0111\u1ec3 ghi chuy\u1ec3n \u0111\u1ed9ng th\u00e0nh v\u1ec7t m\u1edd (n\u01b0\u1edbc ch\u1ea3y, v\u1ec7t \u0111\u00e8n xe), c\u1ea7n ch\u00e2n m\u00e1y; ph\u01a1i s\u00e1ng th\u00f4ng th\u01b0\u1eddng ch\u1ec9 l\u00e0 m\u1ee9c s\u00e1ng c\u1ee7a m\u1ed9t l\u1ea7n ch\u1ee5p.<\/p>\n<p><script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec trong nhi\u1ebfp \u1ea3nh?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ph\u01a1i s\u00e1ng l\u00e0 l\u01b0\u1ee3ng \u00e1nh s\u00e1ng c\u1ea3m bi\u1ebfn thu nh\u1eadn trong m\u1ed9t l\u1ea7n ch\u1ee5p, quy\u1ebft \u0111\u1ecbnh \u1ea3nh s\u00e1ng, t\u1ed1i hay v\u1eeba \u0111\u1ee7, do kh\u1ea9u \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp v\u00e0 ISO c\u00f9ng chi ph\u1ed1i.\"}},\n{\"@type\":\"Question\",\"name\":\"Tam gi\u00e1c ph\u01a1i s\u00e1ng g\u1ed3m nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"G\u1ed3m kh\u1ea9u \u0111\u1ed9 (f\/), t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp v\u00e0 ISO. Ba y\u1ebfu t\u1ed1 lu\u00f4n \u0111\u00e1nh \u0111\u1ed5i l\u1eabn nhau: t\u0103ng m\u1ed9t y\u1ebfu t\u1ed1 \u0111\u1ec3 s\u00e1ng h\u01a1n th\u01b0\u1eddng ph\u1ea3i gi\u1ea3m y\u1ebfu t\u1ed1 kh\u00e1c \u0111\u1ec3 tr\u00e1nh ch\u00e1y s\u00e1ng.\"}},\n{\"@type\":\"Question\",\"name\":\"B\u00f9 tr\u1eeb ph\u01a1i s\u00e1ng (EV) d\u00f9ng khi n\u00e0o?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Khi c\u1ea3nh t\u01b0\u01a1ng ph\u1ea3n m\u1ea1nh khi\u1ebfn m\u00e1y \u0111o s\u00e1ng b\u1ecb \u0111\u00e1nh l\u1eeba, v\u00ed d\u1ee5 ng\u01b0\u1ee3c s\u00e1ng c\u1ea7n t\u0103ng EV, n\u1ec1n s\u00e1ng nh\u01b0 tuy\u1ebft c\u1ea7n t\u0103ng EV, c\u00f2n c\u1ea3nh t\u1ed1i c\u1ea7n gi\u1ea3m EV.\"}},\n{\"@type\":\"Question\",\"name\":\"V\u00ec sao \u1ea3nh b\u1ecb ch\u00e1y s\u00e1ng d\u00f9 tr\u1eddi kh\u00f4ng qu\u00e1 n\u1eafng?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Th\u01b0\u1eddng do m\u00e1y \u0111o s\u00e1ng theo v\u00f9ng t\u1ed1i trong khung h\u00ecnh r\u1ed3i t\u1ef1 t\u0103ng s\u00e1ng c\u1ea3 \u1ea3nh, khi\u1ebfn v\u00f9ng s\u00e1ng nh\u01b0 b\u1ea7u tr\u1eddi b\u1ecb ch\u00e1y tr\u1eafng. Gi\u1ea3m EV ho\u1eb7c \u0111o s\u00e1ng \u0111i\u1ec3m s\u1ebd kh\u1eafc ph\u1ee5c.\"}},\n{\"@type\":\"Question\",\"name\":\"L\u00e0m sao bi\u1ebft \u1ea3nh thi\u1ebfu s\u00e1ng hay th\u1eeba s\u00e1ng m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Xem histogram: \u0111\u1ed3 th\u1ecb d\u1ed3n m\u00e9p tr\u00e1i l\u00e0 thi\u1ebfu s\u00e1ng, d\u1ed3n m\u00e9p ph\u1ea3i l\u00e0 th\u1eeba s\u00e1ng. Kh\u00f4ng c\u00f3 histogram, quan s\u00e1t v\u00f9ng s\u00e1ng nh\u1ea5t v\u00e0 t\u1ed1i nh\u1ea5t c\u00f2n gi\u1eef chi ti\u1ebft hay kh\u00f4ng.\"}},\n{\"@type\":\"Question\",\"name\":\"\u0110i\u1ec7n tho\u1ea1i c\u00f3 ch\u1ec9nh ph\u01a1i s\u00e1ng th\u1ee7 c\u00f4ng \u0111\u01b0\u1ee3c kh\u00f4ng?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"C\u00f3. Samsung v\u00e0 Xiaomi c\u00f3 ch\u1ebf \u0111\u1ed9 Pro\/Chuy\u00ean nghi\u1ec7p ch\u1ec9nh ri\u00eang ISO v\u00e0 t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp; iPhone cho kh\u00f3a AE\/AF r\u1ed3i k\u00e9o thanh m\u1eb7t tr\u1eddi \u0111\u1ec3 t\u0103ng gi\u1ea3m \u0111\u1ed9 s\u00e1ng.\"}},\n{\"@type\":\"Question\",\"name\":\"ISO cao c\u00f3 l\u00e0m \u1ea3nh \u0111\u1eb9p h\u01a1n kh\u00f4ng?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Kh\u00f4ng h\u1eb3n. ISO cao gi\u00fap \u1ea3nh s\u00e1ng h\u01a1n khi thi\u1ebfu s\u00e1ng nh\u01b0ng \u0111\u00e1nh \u0111\u1ed5i b\u1eb1ng nhi\u1ec5u h\u1ea1t v\u00e0 gi\u1ea3m chi ti\u1ebft, ch\u1ec9 n\u00ean t\u0103ng khi \u0111\u00e3 h\u1ebft d\u01b0 \u0111\u1ecba kh\u1ea9u \u0111\u1ed9 v\u00e0 t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp.\"}},\n{\"@type\":\"Question\",\"name\":\"Ph\u01a1i s\u00e1ng l\u00e2u kh\u00e1c g\u00ec ph\u01a1i s\u00e1ng th\u00f4ng th\u01b0\u1eddng?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ph\u01a1i s\u00e1ng l\u00e2u k\u00e9o d\u00e0i th\u1eddi gian m\u00e0n tr\u1eadp \u0111\u1ec3 ghi chuy\u1ec3n \u0111\u1ed9ng th\u00e0nh v\u1ec7t m\u1edd (n\u01b0\u1edbc ch\u1ea3y, v\u1ec7t \u0111\u00e8n xe), c\u1ea7n ch\u00e2n m\u00e1y; ph\u01a1i s\u00e1ng th\u00f4ng th\u01b0\u1eddng ch\u1ec9 l\u00e0 m\u1ee9c s\u00e1ng c\u1ee7a m\u1ed9t l\u1ea7n ch\u1ee5p.\"}}\n]}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n t\u1eebng ch\u1ee5p m\u1ed9t b\u1ee9c \u1ea3nh m\u00e0 b\u1ea7u tr\u1eddi tr\u1eafng x\u00f3a ho\u1eb7c ch\u1ee7 th\u1ec3 t\u1ed1i om d\u00f9 \u0111\u1ee9ng ngay gi\u1eefa khung h\u00ecnh? \u0110\u00f3 l\u00e0 h\u1eadu qu\u1ea3 c\u1ee7a vi\u1ec7c &#8220;ph\u01a1i s\u00e1ng&#8221; ch\u01b0a \u0111\u00fang. Ph\u01a1i s\u00e1ng quy\u1ebft \u0111\u1ecbnh b\u1ee9c \u1ea3nh s\u00e1ng hay t\u1ed1i, v\u00e0 ba y\u1ebfu t\u1ed1 t\u1ea1o n\u00ean n\u00f3 \u2013 kh\u1ea9u \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 m\u00e0n tr\u1eadp, [&hellip;]<\/p>\n","protected":false},"author":102,"featured_media":584821,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"ph\u01a1i s\u00e1ng l\u00e0 g\u00ec","_yoast_wpseo_title":"Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec? Tam gi\u00e1c ph\u01a1i s\u00e1ng trong nhi\u1ebfp \u1ea3nh","_yoast_wpseo_metadesc":"Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u tam gi\u00e1c ph\u01a1i s\u00e1ng, c\u00e1ch b\u00f9 tr\u1eeb EV, \u0111\u1ecdc histogram v\u00e0 t\u1ef1 ch\u1ec9nh ph\u01a1i s\u00e1ng th\u1ee7 c\u00f4ng tr\u00ean \u0111i\u1ec7n tho\u1ea1i chu\u1ea9n nh\u1ea5t, \u1ea3nh kh\u00f4ng ch\u00e1y s\u00e1ng.","footnotes":""},"categories":[29235,3910],"tags":[],"class_list":["post-584816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-to-mo","category-kham-pha"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec? Tam gi\u00e1c ph\u01a1i s\u00e1ng trong nhi\u1ebfp \u1ea3nh<\/title>\n<meta name=\"description\" content=\"Ph\u01a1i s\u00e1ng l\u00e0 g\u00ec? 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