{"id":1514,"date":"2023-07-25T12:35:50","date_gmt":"2023-07-25T05:35:50","guid":{"rendered":"https:\/\/ladigi.vn\/t\/?p=1514"},"modified":"2023-07-25T11:46:00","modified_gmt":"2023-07-25T04:46:00","slug":"gioi-thieu-adobe-photoshop-cs4-cho-nguoi-moi-bat-dau-su-dung","status":"publish","type":"post","link":"https:\/\/ladigi.vn\/t\/gioi-thieu-adobe-photoshop-cs4-cho-nguoi-moi-bat-dau-su-dung\/","title":{"rendered":"Gi\u1edbi thi\u1ec7u Adobe Photoshop CS4 cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng"},"content":{"rendered":"<div>\n<p align=\"justify\"><strong><span style=\"color: #333333;\">Adobe Photoshop CS4 l\u00e0 1 ph\u1ea7n m\u1ec1m x\u1eed l\u00fd \u1ea3nh chuy\u00ean nghi\u1ec7p. Photoshop cho ph\u00e9p ng\u01b0\u1eddi s\u1eed d\u1ee5ng t\u00fat s\u1eeda \u1ea3nh (<em>retouching<\/em>), gh\u00e9p \u1ea3nh (<em>composing<\/em>), ph\u1ee5c ch\u1ebf \u1ea3nh (<em>restoration<\/em>), t\u00f4 m\u00e0u tranh \u1ea3nh (<em>painting<\/em>)\u2026 1 c\u00e1ch d\u1ec5 d\u00e0ng &amp; hi\u1ec7u qu\u1ea3<\/span><\/strong>.<\/p>\n<p>Ph\u1ea7n m\u1ec1m n\u00e0y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a c\u00e1c nhi\u1ebfp \u1ea3nh gia, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf \u0111\u1ed3 ho\u1ea1, thi\u1ebft k\u1ebf web &amp; bi\u00ean t\u1eadp video.<\/p>\n<p>Ngo\u00e0i ra Adobe Photoshop CS4 c\u00f2n ph\u1ed1i h\u1ee3p r\u1ea5t t\u1ed1t v\u1edbi nh\u1eefng ph\u1ea7n m\u1ec1m kh\u00e1c c\u1ee7a h\u00e3ng Adobe nh\u01b0:<\/p>\n<p>&#8211; Ph\u1ea7n m\u1ec1m v\u1ebd trang tr\u00ed &amp; minh h\u1ecda <strong>Adobe Illustrator CS4<\/strong>.<br \/>\n&#8211; Ph\u1ea7n m\u1ec1m s\u1eafp ch\u1eef &amp; tr\u00ecnh b\u00e0y <strong>Adobe InDesign CS4<\/strong>.<br \/>\n&#8211; Ph\u1ea7n m\u1ec1m t\u1ea1o h\u00ecnh \u1ea3nh \u0111\u1ed9ng <strong>Adobe Flash CS4<\/strong>.<br \/>\n&#8211; Ph\u1ea7n m\u1ec1m thi\u1ebft k\u1ebf web site <strong>Adobe Dreamweaver CS4<\/strong>.<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/22\/CS4.jpg\" alt=\"\" vspace=\"5\" title=\"\"><br \/>\n<span style=\"color: #3366ff;\">C\u00e1c ph\u1ea7n m\u1ec1m ph\u1ed5 bi\u1ebfn trong b\u1ed9 Adobe Creative Suite 4<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"color: #ff6600;\">\u0110\u1ec3 c\u00f3 th\u1ec3 seting \u0111\u01b0\u1ee3c Photoshop, m\u00e1y vi t\u00ednh c\u1ee7a b\u1ea1n c\u1ea7n ph\u1ea3i c\u00f3 c\u1ea5u c\u00f3 v\u1ebb nh\u01b0 sau<\/span><\/strong><\/p>\n<p><span style=\"color: #0000ff;\"><strong>1. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng m\u00e1y PC v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows<\/strong>:<\/span><\/p>\n<ul>\n<li>\n<div align=\"justify\"><strong><em>B\u1ed9 vi x\u1eed l\u00fd<\/em><\/strong> c\u00f3 v\u1eadn t\u1ed1c 1.8GHz tr\u1edf l\u00ean.<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>H\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/em><\/strong>: Microsoft\u00ae Windows\u00ae XP v\u1edbi Service Pack 2 (khuy\u1ebfn c\u00e1o s\u1eed d\u1ee5ng Service Pack 3) ho\u1eb7c Windows Vista\u00ae v\u1edbi Service Pack 1.<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>B\u1ed9 nh\u1edb l\u01b0u tr\u1eef<\/em><\/strong>: 1GB tr\u1edf l\u00ean.<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>\u0110\u0129a c\u1ee9ng c\u00f2n tr\u1ed1ng<\/em><\/strong> \u00edt nh\u1ea5t l\u00e0 1GB tr\u1edf l\u00ean.<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>M\u00e0n h\u00ecnh<\/em><\/strong> c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 1,024&#215;768 v\u1edbi card m\u00e0n h\u00ecnh 16-bit.<\/div>\n<\/li>\n<li>\n<div align=\"justify\">M\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng c\u1ee7a Photoshop \u0111\u00f2i h\u1ecfi card m\u00e0n h\u00ecnh ph\u1ea3i b\u1ed5 tr\u1ee3 Shader Model 3.0 and OpenGL 2.0<\/div>\n<\/li>\n<\/ul>\n<p align=\"justify\"><span style=\"color: #0000ff;\"><strong>2. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng m\u00e1y Apple Macintosh v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Mac OS<\/strong>:<\/span><\/p>\n<ul>\n<li>\n<div align=\"justify\"><strong><em>B\u1ed9 vi x\u1eed l\u00fd<\/em><\/strong>: PowerPC\u00ae G5 ho\u1eb7c c\u00e1c b\u1ed9 vi x\u1eed l\u00fd \u0111a l\u00f5i c\u1ee7a Intel.<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>H\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/em><\/strong>: Mac OS X v10.4.11\u201310.5.4<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>B\u1ed9 nh\u1edb l\u01b0u tr\u1eef<\/em><\/strong>: 1GB tr\u1edf l\u00ean.<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>\u0110\u0129a c\u1ee9ng c\u00f2n tr\u1ed1ng<\/em><\/strong> \u00edt nh\u1ea5t l\u00e0 1GB tr\u1edf l\u00ean.<\/div>\n<\/li>\n<li>\n<div align=\"justify\"><strong><em>M\u00e0n h\u00ecnh<\/em><\/strong> c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 1,024&#215;768 v\u1edbi card m\u00e0n h\u00ecnh 16-bit.<\/div>\n<\/li>\n<li>\n<div align=\"justify\">M\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng c\u1ee7a Photoshop \u0111\u00f2i h\u1ecfi card m\u00e0n h\u00ecnh ph\u1ea3i b\u1ed5 tr\u1ee3 Shader Model 3.0 and OpenGL 2.0<\/div>\n<\/li>\n<\/ul>\n<p align=\"justify\">Theo \u00fd ki\u1ebfn ri\u00eang c\u1ee7a ch\u00fang t\u00f4i, th\u00ec b\u1ea1n ch\u1ec9 n\u00ean t\u00ecm mua b\u1ed9 \u0111\u0129a <strong>Adobe Creative Suite 4 Master Collection<\/strong>.<\/p>\n<p>B\u1ea1n ch\u1ec9 n\u00ean ch\u00e9p b\u1ed9 \u0111\u0129a n\u00e0y v\u00e0o \u0111\u0129a c\u1ee9ng (kho\u1ea3ng 8GB), r\u1ed3i h\u00e3y ti\u1ebfn h\u00e0nh seting. N\u1ebfu ch\u1ec9 mu\u1ed1n seting Photoshop, b\u1ea1n ch\u1ecdn t\u00f9y ch\u1ecdn khi seting l\u00e0 <strong>Custom Install<\/strong>. C\u00f2n n\u1ebfu ch\u1ecdn <strong>Full Install<\/strong>, th\u00ec b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 seting \u0111\u01b0\u1ee3c m\u1ecdi th\u1ee9 c\u00e1c ph\u1ea7n m\u1ec1m k\u1ec3 tr\u00ean (lu\u00f4n c\u1ea3 <em>Adobe Acrobat 9<\/em> &amp; c\u00e1c ph\u1ea7n m\u1ec1m bi\u00ean t\u1eadp video\/\u00e2m thanh nh\u01b0 <em>Premiere Pro CS4<\/em>, <em>After Effects CS4<\/em>, <em>Soundbooth CS4<\/em>, <em>Encore CS4<\/em> n\u1ebfu mu\u1ed1n).<\/p>\n<blockquote dir=\"ltr\">\n<p align=\"justify\"><strong><em>Trang 2<\/em><\/strong>: <strong><span style=\"color: #ff6600;\">C\u00e1c kh\u00e1i ni\u1ec7m c\u0103n b\u1ea3n c\u1ee7a Photoshop CS4<\/span><\/strong><\/p>\n<\/blockquote>\n<hr \/>\n<p align=\"justify\"><strong><span style=\"color: #ff6600;\">C\u00e1c kh\u00e1i ni\u1ec7m c\u0103n b\u1ea3n c\u1ee7a Photoshop CS4<\/span><\/strong><\/p>\n<p>Photoshop ch\u1ee7 y\u1ebfu l\u00e0m vi\u1ec7c v\u1edbi h\u00ecnh \u1ea3nh d\u1ea1ng l\u01b0\u1edbi \u0111i\u1ec3m (<em>raster<\/em>). Do \u0111\u00f3, khi x\u1eed d\u1ee5ng Photoshop \u0111\u1ec3 m\u1edf c\u00e1c h\u00ecnh \u1ea3nh d\u1ea1ng vector th\u00ec Photoshop ph\u1ea3i l\u01b0\u1edbi \u0111i\u1ec3m h\u00f3a ch\u00fang (<em>rasterizer<\/em>).<\/p>\n<p><strong><span style=\"color: #0000ff;\">1. H\u00ecnh \u1ea3nh vector &amp; raster<\/span><\/strong><\/p>\n<p>H\u00ecnh \u1ea3nh \u0111\u1ed3 h\u1ecda tr\u00ean m\u00e1y t\u00ednh chia l\u00e0m hai lo\u1ea1i: <strong>vector<\/strong> &amp; <strong>raster<\/strong>.<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/22\/CS4-1.jpg\" alt=\"\" vspace=\"5\" title=\"\"><\/p>\n<p align=\"justify\"><strong><span style=\"color: #0000ff;\">2. \u0110\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh<br \/>\n<\/span><\/strong><br \/>\n\u0110\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh l\u00e0 s\u1ed1 \u0111i\u1ec3m \u1ea3nh (<em>pixel<\/em>) c\u00f3 tr\u00ean 1 \u0111\u01a1n v\u1ecb chi\u1ec1u d\u00e0i c\u1ee7a h\u00ecnh \u1ea3nh \u0111\u00f3.<\/p>\n<p>\u0110\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng \u0111\u01a1n v\u1ecb <strong>ppi<\/strong> (<em>pixels per inch<\/em>) ho\u1eb7c <strong>dpi<\/strong> (<em>dots per inch<\/em>).<\/p>\n<p><u><strong>V\u00ed d\u1ee5<\/strong><\/u>: m\u1ed9t h\u00ecnh \u1ea3nh c\u00f3 k\u00edch th\u01b0\u1edbc 1 inch x 1 inch &amp; c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 72 ppi s\u1ebd ch\u1ee9a t\u1ed5ng s\u1ed1 72 x 72 = 5.184 pixels. H\u00ecnh \u1ea3nh c\u00f3 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng t\u1ef1 nh\u01b0 nh\u01b0ng v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 300 ppi s\u1ebd ch\u1ee9a t\u1ed5ng s\u1ed1 300 x 300 = 90.000 pixels.<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/22\/CS4-2.jpg\" alt=\"\" vspace=\"5\" title=\"\"><br \/>\n<span style=\"color: #3366ff;\">H\u00ecnh b\u00ean tr\u00e1i c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 72 ppi, h\u00ecnh b\u00ean ph\u1ea3i 300 ppi <\/span><\/p>\n<p align=\"justify\">H\u00ecnh \u1ea3nh c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i c\u00e0ng cao th\u00ec c\u00e0ng s\u1eafc n\u00e9t &amp; s\u1eafc m\u00e0u c\u00e0ng ch\u1ee7 \u0111\u1ea1o x\u00e1c. &amp; khi \u0111\u00f3, dung l\u01b0\u1ee3ng file c\u0169ng s\u1ebd t\u0103ng \u0111i theo, \u0111\u00f2i h\u1ecfi nhi\u1ec1u b\u1ed9 nh\u1edb l\u01b0u tr\u1eef &amp; \u0111\u0129a c\u1ee9ng h\u01a1n.<\/p>\n<p>a. H\u00ecnh \u1ea3nh s\u1eed d\u1ee5ng cho thi\u1ebft k\u1ebf web ch\u1ec9 c\u1ea7n ph\u1ea3i c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 72 ppi.<\/p>\n<p>b. Tr\u01b0\u1eddng h\u1ee3p h\u00ecnh \u1ea3nh x\u1eed d\u1ee5ng cho thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda in \u1ea5n th\u00ec b\u1ea1n c\u1ea7n nh\u1edb hai quy t\u1eafc sau:<\/p>\n<p>&#8211; N\u1ebfu l\u00e0 \u1ea3nh n\u00e9t (<em>line art<\/em>) ho\u1eb7c \u0111\u01a1n s\u1eafc (<em>monochrome<\/em>) th\u00ec \u1ea3nh ch\u1ec9 n\u00ean c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i l\u00e0 1,200 ppi.<\/p>\n<p>&#8211; N\u1ebfu l\u00e0 \u1ea3nh ch\u1ee5p m\u00e0u (<em>color photograph<\/em>) ho\u1eb7c \u1ea3nh ch\u1ee5p \u0111en tr\u1eafng (<em>black and white photograph<\/em>) th\u00ec \u1ea3nh ch\u1ec9 n\u00ean c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 300 ppi.<\/p>\n<p>c. \u0110\u1ec3 r\u1eeda \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 th\u00ec h\u00ecnh \u1ea3nh c\u1ea7n ph\u1ea3i c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 300 ppi.<\/p>\n<p>d. N\u1ebfu in \u1ea3nh hi-flex v\u1edbi k\u00edch th\u01b0\u1edbc l\u1edbn (\u0111\u1ec3 qu\u1ea3ng c\u00e1o ngo\u00e0i tr\u1eddi ch\u1eb3ng h\u1ea1n) th\u00ec h\u00ecnh \u1ea3nh c\u1ea7n ph\u1ea3i c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i kho\u1ea3ng 72 ppi cho \u0111\u1ebfn 100 ppi.<\/p>\n<p><strong><span style=\"color: #0000ff;\">3. Quan h\u1ec7 gi\u1eefa k\u00edch th\u01b0\u1edbc \u1ea3nh &amp; \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh<\/span><\/strong><\/p>\n<p>Hi\u1ec7n nay, vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y \u1ea3nh s\u1ed1 \u0111\u00e3 tr\u1edf th\u00e0nh r\u1ea5t th\u00f4ng d\u1ee5ng, Tuy nhi\u00ean, h\u00ecnh \u1ea3nh nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb m\u00e1y \u1ea3nh s\u1ed1 th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 72 ppi. B\u1ea1n ch\u1ec9 n\u00ean x\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng <strong>Image<\/strong> &gt; <strong>Image Size<\/strong> c\u1ee7a Photoshop \u0111\u1ec3 ch\u1ec9nh l\u1ea1i k\u00edch th\u01b0\u1edbc \u1ea3nh &amp; \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh cho ph\u00f9 h\u1ee3p v\u1edbi m\u1ee5c \u0111\u00edch ri\u00eang c\u1ee7a b\u1ea1n.<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/22\/CS4-3.jpg\" alt=\"\" title=\"\"><\/p>\n<p align=\"justify\"><strong>A<\/strong>. K\u00edch th\u01b0\u1edbc &amp; \u0111\u1ed9 ph\u00e2n gi\u1ea3i c\u1ee7a \u1ea3nh g\u1ed1c.<\/p>\n<p><strong>B<\/strong>. Kh\u00f4ng ch\u1ecdn Resample (ngh\u0129a l\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec3m \u1ea3nh kh\u00f4ng thay \u0111\u1ed5i); t\u0103ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i l\u00ean n l\u1ea7n th\u00ec k\u00edch th\u01b0\u1edbc \u1ea3nh s\u1ebd gi\u1ea3m xu\u1ed1ng n l\u1ea7n &amp; ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n<p><strong>C<\/strong>. C\u00f3 ch\u1ecdn Resample (ngh\u0129a l\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec3m \u1ea3nh c\u00f3 thay \u0111\u1ed5i); Photoshop ph\u1ea3i t\u1ef1 suy ra th\u00eam 1 s\u1ed1 \u0111i\u1ec3m m\u1edbi ho\u1eb7c ph\u1ea3i t\u1ef1 lo\u1ea1i b\u1ecf m\u1ed9t s\u1ed1 \u0111i\u1ec3m c\u0169. Hai quy tr\u00ecnh n\u00e0y g\u1ecdi b\u1eb1ng n\u1ed9i suy (interpolation). Khi \u0111\u00f3 h\u00ecnh \u1ea3nh c\u00f3 th\u1ec3 s\u1ebd b\u1ecb m\u1ea5t n\u00e9t (<em>out-of-focus<\/em>). \u0110\u1ec3 l\u00e0m cho h\u00ecnh \u1ea3nh s\u1eafc n\u00e9t quay v\u1ec1, ta x\u1eed d\u1ee5ng <strong>Filter<\/strong> &gt; <strong>Sharpen<\/strong> &gt; <strong>Unsharp Mask&#8230;<\/strong> C\u00f3 3 ph\u01b0\u01a1ng ph\u00e1p n\u1ed9i suy: bicubic, bilinear &amp; nearest neighbor. Ph\u01b0\u01a1ng ph\u00e1p bicubic th\u01b0\u1eddng cho h\u1eadu qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>\n<blockquote dir=\"ltr\">\n<p align=\"justify\"><strong><em>Trang 3<\/em>: <\/strong><span style=\"color: #0000ff;\"><strong>4. \u0110\u1ed9 ph\u00e2n gi\u1ea3i m\u00e0n h\u00ecnh<\/strong><\/span><\/p>\n<\/blockquote>\n<hr \/>\n<p align=\"justify\"><strong><span style=\"color: #0000ff;\">4. \u0110\u1ed9 ph\u00e2n gi\u1ea3i m\u00e0n h\u00ecnh<\/span><\/strong><\/p>\n<p>\u0110\u1ed9 ph\u00e2n gi\u1ea3i m\u1eb7c nhi\u00ean c\u1ee7a m\u00e0n h\u00ecnh (monitor resolution) m\u00e1y Macintosh l\u00e0 72 dpi, c\u1ee7a m\u00e0n h\u00ecnh PC l\u00e0 96 dpi.<\/p>\n<p>Khi b\u1ea1n ch\u1ecdn <strong>View<\/strong> &gt; <strong>Actual Pixels<\/strong> (<em>Ctrl + 1<\/em>), Photoshop s\u1ebd hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh \u1edf ch\u1ebf \u0111\u1ed9 100%. \u0110\u00e2y l\u00e0 ch\u1ebf \u0111\u1ed9 trung th\u1ef1c nh\u1ea5t c\u1ee7a h\u00ecnh \u1ea3nh. Khi \u0111\u00f3 m\u1ed7i pixel c\u1ee7a h\u00ecnh \u1ea3nh s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng m\u1ed9t pixel c\u1ee7a m\u00e0n h\u00ecnh.<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/26\/shop1.jpg\" alt=\"\" title=\"\"><\/p>\n<p align=\"justify\">Kh\u00e1c v\u1edbi c\u00e1c ph\u1ea7n m\u1ec1m \u0111\u1ed3 h\u1ecda kh\u00e1c, ch\u1ebf \u0111\u1ed9 hi\u1ec3n th\u1ecb 100% kh\u00f4ng bi\u1ec3u l\u1ed9 k\u00edch th\u01b0\u1edbc th\u1eadt c\u1ee7a h\u00ecnh \u1ea3nh. \u0110\u1ec3 h\u00ecnh dung k\u00edch th\u01b0\u1edbc c\u1ee7a \u1ea3nh khi in ra m\u00e1y in, b\u1ea1n c\u1ea7n ch\u1ecdn <strong>View<\/strong> &gt; <strong>Print Size<\/strong>.<\/p>\n<p><strong><span style=\"color: #0000ff;\">5. C\u00e1c ch\u1ebf \u0111\u1ed9 h\u00ecnh \u1ea3nh (image modes)<\/span><\/strong><\/p>\n<p><strong><em>a. Bitmap<\/em><\/strong><\/p>\n<p>L\u00e0 h\u00ecnh \u1ea3nh m\u00e0 m\u1ed7i \u0111i\u1ec3m \u1ea3nh \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef b\u1eb1ng 1 bit. Nh\u01b0 v\u1eady m\u1ed7i \u0111i\u1ec3m \u1ea3nh c\u1ee7a h\u00ecnh \u1ea3nh bitmap ch\u1ec9 c\u00f3 th\u1ec3 l\u00e0 \u0111i\u1ec3m \u0111en ho\u1eb7c \u0111i\u1ec3m tr\u1eafng. Do \u0111\u00f3, h\u00ecnh \u1ea3nh d\u1ea1ng bitmap ch\u1ec9 c\u00f3 2 s\u1eafc \u0111\u1ed9 x\u00e1m (2 gray levels).<\/p>\n<p>H\u00ecnh \u1ea3nh bitmap th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi b\u1eb1ng \u1ea3nh n\u00e9t.<\/p>\n<p>M\u1ed9t h\u00ecnh \u1ea3nh kh\u1ed5 A4 (8.26 inch x 11.69 inch) v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh 300 ppi, n\u1ebfu \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef d\u01b0\u1edbi ch\u1ebf \u0111\u1ed9 bitmap s\u1ebd c\u00f3 dung l\u01b0\u1ee3ng file l\u00e0:<\/p>\n<p align=\"center\">8.26 x 300 x 11.69 x 300 x 1bit = 8.690.346 bit = 1.086.293 bytes = 1.03 MB<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/26\/shop2.jpg\" alt=\"\" title=\"\"><br \/>\n<span style=\"color: #3366ff;\">H\u00ecnh \u1ea3nh bitmap <\/span><\/p>\n<p align=\"justify\"><strong><em>b. Grayscale<\/em><\/strong><\/p>\n<p>L\u00e0 h\u00ecnh \u1ea3nh m\u00e0 m\u1ed7i \u0111i\u1ec3m \u1ea3nh \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef b\u1eb1ng 8 bit. Nh\u01b0 v\u1eady m\u1ed7i \u0111i\u1ec3m \u1ea3nh c\u1ee7a h\u00ecnh \u1ea3nh grayscale c\u00f3 th\u1ec3 nh\u1eadn m\u1ed9t gi\u00e1 tr\u1ecb t\u1eeb 0 cho \u0111\u1ebfn 255. Do \u0111\u00f3, h\u00ecnh \u1ea3nh d\u1ea1ng grayscale c\u00f3 256 s\u1eafc \u0111\u1ed9 x\u00e1m (t\u1ee9c 28).<\/p>\n<p>Nh\u1eefng \u1ea3nh \u0111en tr\u1eafng (black and white photograph) m\u00e0 ch\u00fang ta th\u01b0\u1eddng th\u1ea5y tr\u00ean b\u00e1o ch\u00ed c\u00f3 ch\u1ebf \u0111\u1ed9 h\u00ecnh \u1ea3nh l\u00e0 grayscale.<\/p>\n<p>M\u1ed9t h\u00ecnh \u1ea3nh kh\u1ed5 A4 v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh 300 ppi, n\u1ebfu \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef d\u01b0\u1edbi ch\u1ebf \u0111\u1ed9 grayscale s\u1ebd c\u00f3 dung l\u01b0\u1ee3ng file l\u00e0:<\/p>\n<p align=\"center\">1.03 MB x 8 = 8.24 MB<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/26\/shop3.jpg\" alt=\"\" title=\"\"><br \/>\n<span style=\"color: #3366ff;\">H\u00ecnh \u1ea3nh grayscale <\/span><\/p>\n<p align=\"justify\"><strong><em>c. RGB Color<\/em><\/strong><\/p>\n<p>L\u00e0 h\u00ecnh \u1ea3nh m\u00e0 m\u1ed7i \u0111i\u1ec3m \u1ea3nh \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef b\u1eb1ng 24 bits: 8 bits cho m\u00e0u \u0111\u1ecf (Red), 8 bits cho m\u00e0u l\u1ee5c (Green), 8 bits cho m\u00e0u lam (Blue). Nh\u01b0 v\u1eady m\u1ed7i \u0111i\u1ec3m \u1ea3nh c\u1ee7a h\u00ecnh \u1ea3nh RGB c\u00f3 th\u1ec3 nh\u1eadn m\u1ed9t gi\u00e1 tr\u1ecb t\u1eeb 0 cho \u0111\u1ebfn 16.777.216. Do \u0111\u00f3, h\u00ecnh \u1ea3nh d\u1ea1ng RGB c\u00f3 th\u1ec3 c\u00f3 cho \u0111\u1ebfn 16,7 tri\u1ec7u m\u00e0u (t\u1ee9c 224).<\/p>\n<p>Nh\u1eefng \u1ea3nh ch\u1ee5p m\u00e0u (color photograph) t\u1eeb m\u00e1y \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 ch\u1ebf \u0111\u1ed9 h\u00ecnh \u1ea3nh l\u00e0 RGB.<\/p>\n<p>M\u1ed9t h\u00ecnh \u1ea3nh kh\u1ed5 A4 v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh 300 ppi, n\u1ebfu \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef d\u01b0\u1edbi ch\u1ebf \u0111\u1ed9 RGB s\u1ebd c\u00f3 dung l\u01b0\u1ee3ng file l\u00e0:<\/p>\n<p align=\"center\">1.03 MB x 24 = 24.72 MB<\/p>\n<p align=\"justify\">N\u1ebfu ch\u1ecdn <strong>Windows<\/strong> &gt; <strong>Channels<\/strong> \u0111\u1ec3 hi\u1ec3n th\u1ecb Channels panel, c\u00e1c b\u1ea1n s\u1ebd th\u1ea5y h\u00ecnh \u1ea3nh RGB c\u00f3 3 k\u00eanh m\u00e0u R, G, B:<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/26\/shop4.jpg\" alt=\"\" vspace=\"5\" title=\"\"><br \/>\n<span style=\"color: #3366ff;\">H\u00ecnh \u1ea3nh RGB c\u00f3 3 k\u00eanh m\u00e0u R, G, B <\/span><\/p>\n<p align=\"justify\">H\u00ecnh \u1ea3nh RGB th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi thi\u1ebft k\u1ebf web site, r\u1eeda \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1, tr\u00ecnh chi\u1ebfu, x\u1eed l\u00fd video\u2026<\/p>\n<p><strong><em>d. CMYK Color<\/em><\/strong><\/p>\n<p>\u0110\u1ec3 s\u1eed d\u1ee5ng trong in \u1ea5n c\u00f4ng nghi\u1ec7p, h\u00ecnh \u1ea3nh m\u00e0u c\u1ea7n \u0111\u01b0\u1ee3c chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 CMYK (Cyan, Magenta, Yellow, Black) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn <strong>Image<\/strong> &gt; <strong>Mode<\/strong> &gt; <strong>CMYK color<\/strong>.<\/p>\n<p>M\u1ed7i \u0111i\u1ec3m \u1ea3nh c\u1ee7a h\u00ecnh \u1ea3nh d\u1ea1ng CMYK \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef b\u1eb1ng 32 bits: 8 bits cho m\u00e0u lam l\u1ee5c (Cyan), 8 bits cho m\u00e0u \u0111\u1ecf c\u00e1nh sen (Magenta), 8 bits cho m\u00e0u v\u00e0ng (Yellow) &amp; 8 bits cho black color (Black).<\/p>\n<p>M\u1ed9t h\u00ecnh \u1ea3nh kh\u1ed5 A4 v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u1ea3nh 300 ppi, n\u1ebfu \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef d\u01b0\u1edbi ch\u1ebf \u0111\u1ed9 CMYK s\u1ebd c\u00f3 dung l\u01b0\u1ee3ng file l\u00e0:<\/p>\n<p align=\"center\">1.03 MB x 32 = 32.96 MB<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"https:\/\/st.quantrimang.com\/photos\/image\/092009\/26\/shop5.jpg\" alt=\"\" vspace=\"4\" title=\"\"><br \/>\n<span style=\"color: #3366ff;\">H\u00ecnh \u1ea3nh CMYK c\u00f3 4 k\u00eanh m\u00e0u C, M, Y, K <\/span><\/p>\n<p align=\"justify\">Ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1c h\u1ec7 m\u00e0u RGB &amp; CMYK trong b\u00e0i <strong>L\u00fd Thuy\u1ebft M\u00e0u<\/strong>.<\/p>\n<p align=\"justify\">(<em>C\u00f2n ti\u1ebfp<\/em>)<\/p>\n<p align=\"justify\"><strong>GV: NGUY\u1ec4N KHOA C\u00c1T<br \/>\nC\u00f4ng ty TNHH Kh\u1ea3i Thi\u00ean (KTC Co., Ltd) &#8211; Trung T\u00e2m \u0110\u00e0o T\u1ea1o<\/strong><\/p>\n<\/div>\n<h2>H\u01b0\u1edbng d\u1eabn h\u1ecdc s\u1eed d\u1ee5ng Photoshop cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u. B\u00e0i 1 | T\u1ef1 H\u1ecdc \u0110\u1ed3 Ho\u1ea1<\/h2>\n<p><iframe title=\" H\u01b0\u1edbng d\u1eabn h\u1ecdc s\u1eed d\u1ee5ng Photoshop cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u. B\u00e0i 1 | T\u1ef1 H\u1ecdc \u0110\u1ed3 Ho\u1ea1 \" src=\"https:\/\/www.youtube.com\/embed\/f-yeEu3m81o\" width=\"650px\" height=\"400px\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2>FAQs v\u1ec1 Photoshop &#8211; B\u00e0i 1: Gi\u1edbi thi\u1ec7u Adobe Photoshop CS4<\/h2>\n<h3>1. Adobe Photoshop CS4 l\u00e0 g\u00ec?<\/h3>\n<p>Adobe Photoshop CS4 l\u00e0 1 ph\u1ea7n m\u1ec1m ch\u1ec9nh s\u1eeda h\u00ecnh \u1ea3nh ph\u1ed5 bi\u1ebfn do Adobe Systems ph\u00e1t tri\u1ec3n. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda, ch\u1ee5p \u1ea3nh s\u1ed1 &amp; c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c li\u00ean quan cho \u0111\u1ebfn h\u00ecnh \u1ea3nh, video &amp; \u0111\u1ed3 h\u1ecda.<\/p>\n<h3>2. Adobe Photoshop CS4 c\u00f3 nh\u1eefng t\u00ednh n\u0103ng g\u00ec?<\/h3>\n<p>Adobe Photoshop CS4 cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng c\u1ea7u k\u1ef3 cho ph\u00e9p ng\u01b0\u1eddi x\u1eed d\u1ee5ng t\u00f9y ch\u1ec9nh, ch\u1ec9nh s\u1eeda &amp; s\u00e1ng t\u1ea1o h\u00ecnh \u1ea3nh ch\u1ea5t l\u01b0\u1ee3ng cao. M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u1ee7 \u0111\u1ea1o g\u1ed3m c\u00f3:<\/p>\n<ul>\n<li>C\u00f4ng c\u1ee5 ch\u1ec9nh s\u1eeda h\u00ecnh \u1ea3nh \u0111\u1ea7y \u0111\u1ee7<\/li>\n<li>\u0110\u1ed1i t\u01b0\u1ee3ng th\u00f4ng minh cho ph\u00e9p t\u00e1i s\u1eed d\u1ee5ng c\u00e1c ph\u1ea7n c\u1ee7a h\u00ecnh \u1ea3nh &amp; \u0111i\u1ec1u ch\u1ec9nh ch\u00fang 1 c\u00e1ch d\u1ec5 d\u00e0ng<\/li>\n<li>Ch\u1ec9nh s\u1eeda h\u00ecnh \u1ea3nh RAW v\u1edbi Camera Raw 5.x<\/li>\n<li>T\u00ednh n\u0103ng ch\u1ebf \u0111\u1ed9 xem tr\u01b0\u1edbc Live, cho ph\u00e9p xem nh\u1eefng thay \u0111\u1ed5i ngay l\u1eadp t\u1ee9c tr\u00ean h\u00ecnh \u1ea3nh<\/li>\n<li>T\u00ednh n\u0103ng t\u1ef1 \u0111\u1ed9ng gh\u00e9p \u1ea3nh &amp; t\u1ea1o panorama<\/li>\n<\/ul>\n<h3>3. Adobe Photoshop CS4 c\u00f3 s\u1eb5n tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng n\u00e0o?<\/h3>\n<p>Adobe Photoshop CS4 ch\u1ec9 c\u00f3 s\u1eb5n tr\u00ean Microsoft Windows &amp; Mac OS X.<\/p>\n<h3>4. Adobe Photoshop CS4 c\u00f3 y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh ph\u1ea7n c\u1ee9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>Y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u c\u1ee7a c\u1ea5u h\u00ecnh ph\u1ea7n c\u1ee9ng \u0111\u1ec3 ch\u1ea1y Adobe Photoshop CS4 g\u1ed3m:<\/p>\n<ul>\n<li>Windows XP SP2 ho\u1eb7c Vista SP1<\/li>\n<li>M\u00e1y t\u00ednh Intel Pentium 4 ho\u1eb7c AMD Athlon 64 procesor<\/li>\n<li>1 GB RAM (cho Windows XP) ho\u1eb7c 2 GB RAM (cho Windows Vista)<\/li>\n<li>1 GB kh\u00f4ng gian tr\u1ed1ng tr\u00ean \u0111\u0129a c\u1ee9ng<\/li>\n<li>\u0110\u1ed3 h\u1ecda card t\u01b0\u01a1ng th\u00edch v\u1edbi DirectX 9<\/li>\n<\/ul>\n<p>Tuy nhi\u00ean, \u0111\u1ec3 s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m 1 c\u00e1ch m\u01b0\u1ee3t m\u00e0 &amp; hi\u1ec7u qu\u1ea3, \u0111\u00f2i h\u1ecfi c\u1ea5u h\u00ecnh ph\u1ea7n c\u1ee9ng cao h\u01a1n.<\/p>\n<h3>5. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ecm mua Adobe Photoshop CS4?<\/h3>\n<p>Adobe Photoshop CS4 kh\u00f4ng c\u00f2n \u0111\u01b0\u1ee3c ban h\u00e0nh n\u1eefa. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y phi\u00ean b\u1ea3n m\u1edbi h\u01a1n c\u1ee7a ph\u1ea7n m\u1ec1m, g\u1ed3m c\u00f3 Adobe Photoshop CC, tr\u00ean web site c\u1ee7a Adobe.<\/p>\n<h2>T\u1eeb kh\u00f3a v\u1ec1 PhotoStore &#8211; B\u00e0i 1: Gi\u1edbi thi\u1ec7u v\u1ec1 Adobe Photoshop CS4<\/h2>\n<p>1. Photoshop CS4<br \/>\n2. Graphic design<br \/>\n3. Image editing<br \/>\n4. Photo manipulation<br \/>\n5. Adobe Creative Suite<br \/>\n6. Digital art<br \/>\n7. Layers<br \/>\n8. Retouching<br \/>\n9. Adjustments<br \/>\n10. Color correction<\/p>\n<p>N\u1ebfu c\u00f3 b\u1eaft k\u1ef3 th\u1eafc m\u1eafc n\u00e0o v\u1ec1 <strong>PhotoStore &#8211; B\u00e0i 1: Gi\u1edbi thi\u1ec7u v\u1ec1 Adobe Photoshop CS4<\/strong> h\u00e3y cho ch\u00fang m\u00ecnh bi\u1ebft nh\u00e9, m\u1ecdi c\u00e2u h\u1ecfi hay g\u00f3p \u00fd c\u1ee7a c\u00e1c c\u00e1c b\u1ea1n s\u1ebd gi\u00fap m\u00ecnh ho\u00e0n thi\u1ec7n h\u01a1n trong c\u00e1c b\u00e0i sau nh\u00e9!<\/p>\n<p>B\u00e0i vi\u1ebft <strong>PhotoStore &#8211; B\u00e0i 1: Gi\u1edbi thi\u1ec7u v\u1ec1 Adobe Photoshop CS4<\/strong> \u0111\u01b0\u1ee3c m\u00ecnh &amp; team t\u1ed5ng h\u1ee3p t\u1eeb nhi\u1ec1u ngu\u00f4n. N\u1ebfu th\u1ea5y b\u00e0i vi\u1ebft PhotoStore &#8211; B\u00e0i 1: Gi\u1edbi thi\u1ec7u v\u1ec1 Adobe Photoshop CS4 gi\u00fap \u00edch cho b\u1ea1n th\u00ec h\u00e3y \u1ee7ng h\u1ed9 team Like ho\u1eb7c Share nh\u00e9!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Adobe Photoshop CS4 l\u00e0 1 ph\u1ea7n m\u1ec1m x\u1eed l\u00fd \u1ea3nh chuy\u00ean nghi\u1ec7p. Photoshop cho ph\u00e9p ng\u01b0\u1eddi s\u1eed d\u1ee5ng t\u00fat s\u1eeda \u1ea3nh (retouching), gh\u00e9p \u1ea3nh (composing), ph\u1ee5c ch\u1ebf \u1ea3nh (restoration), t\u00f4 m\u00e0u tranh \u1ea3nh (painting)\u2026 1 c\u00e1ch d\u1ec5 d\u00e0ng &amp; hi\u1ec7u qu\u1ea3. 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