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<div class="postContent"><p><strong>Bảng kính thước ảnh thông dụng giúp bạn cắt cúp (crop) ảnh số đúng với kích thước ảnh muốn in trên giấy.</strong></p>
<p><strong>Common Photo Print Sizes</strong></p>
<table class="table" border="1" cellspacing="0" cellpadding="4" width="600">
<col width="77"></col>
<col width="82"></col>
<col width="100"></col>
<col width="47"></col>
<col width="356"></col>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><strong>Kích thước<br />
(mm)</strong></span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><strong>Kích thước<br />
(inch)</strong></span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><strong>Pixel<br />
(300 DPI/PPI)</strong></span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><strong>Tỷ lệ</strong></span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><strong>Ghi chú</strong></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">89 x 127</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3,5 x 5</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">1051 × 1500</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">10:7</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 9 x 12 cm</em></span></span></td>
</tr>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">102 x 152</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">4 x 6</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">1205 × 1795</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3:2</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 10 x 15 cm (gần cỡ giấy postcard Nhật)</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">127 x 178</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">5 x 7</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">1500 × 2102</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">7:5</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 13 x 18 cm</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">152 × 203</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">6 x 8</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">1795 × 2398</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">4:3</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 15 x 20 cm, bẳng 1/2 khổ giấy A4</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">203 × 254</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">8 x 10</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">2398 × 3000</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">5:4</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 20 x 25 cm</em></span></span></td>
</tr>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">203 × 305</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">8 x 12</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">2398 × 3602</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3:2</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Xấp xỉ bằng khổ giấy A4, gấp đôi cỡ 15 x 20 cm</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">254 × 305 </span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">10 x 12</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3000 × 3602</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">6:5</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 25 x 30 cm</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">254 × 381</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">10 x 15</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3000 × 4500</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3:2</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 25 x 38 cm</em></span></span></td>
</tr>
<tr valign="TOP">
<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">279 × 356</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">11 x 14</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3295 × 4205</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">14:11</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 28 x 36 cm</em></span></span></td>
</tr>
<tr valign="TOP">
<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">279 × 432</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">11 x 17</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3295 × 5102</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">17:11</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 28 x 43 cm</em></span></span></td>
</tr>
<tr valign="TOP">
<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">305 × 381</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">12 x 15</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3602 × 4500</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">5:4</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 30 x 38 cm</em></span></span></td>
</tr>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">305 × 457</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">12 x 18</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3602 × 5492</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3:2</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 30 x 45 cm</em></span></span></td>
</tr>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">762 x 508</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">20 x 30</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">6000 x 9000</span></span></td>
<td width="47"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3:2</span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Thường gọi là cỡ 50 x 75 cm, bằng ảnh lịch cuốn treo tường</em></span></span></td>
</tr>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">105 x 148</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">4.13 x 5.83</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">1750 x 1240</span></span></td>
<td width="47"><span style="color: #000000;"><span style="font-size: x-small;"><strong>A6</strong></span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Bằng nửa khổ A5, bằng 1/4 khổ A4</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">148 x 210</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">5.83 x 8.27</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">2480 x 1750</span></span></td>
<td width="47"><span style="color: #000000;"><span style="font-size: x-small;"><strong>A5</strong></span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Bằng nửa khổ A4, xấp xỉ bằng cỡ ảnh 15 x 20 cm</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">210 x 297</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">8.27 x 11.69</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">3500 x 2480</span></span></td>
<td width="47"><span style="color: #000000;"><span style="font-size: x-small;"><strong>A4</strong></span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Khổ giấy A4, xấp xỉ gấp đôi ảnh cỡ 15 x 20 cm</em></span></span></td>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">297 x 420</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">11.69 x 16.54</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">4960 x 3500</span></span></td>
<td width="47"><span style="color: #000000;"><span style="font-size: x-small;"><strong>A3</strong></span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Gấp đôi khổ A4</em></span></span></td>
</tr>
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<td width="77"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">420 x 594</span></span></td>
<td width="82"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">16.54 x 23.39</span></span></td>
<td width="100"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;">7020 x 4960</span></span></td>
<td width="47"><span style="color: #000000;"><span style="font-size: x-small;"><strong>A2</strong></span></span></td>
<td width="356"><span style="font-family: Tahoma,sans-serif;"><span style="font-size: x-small;"><em>Gấp đôi khổ A3, gấp 4 khổ A4</em></span></span></td>
</tr>
</tbody>
</table>
<p><span id="more-695"></span><br />
<strong>Một số lưu ý:</strong></p>
<ul>
<li>Pixel là điểm ảnh (picture element), đơn vị tính độ phân giải (resolution) của ảnh số. Độ phân giải càng lớn, ảnh càng rõ chi tiết.</li>
<li>Nếu muốn lưu giữ tệp tin ảnh (image file) ở độ phân giải lớn để bảo đảm chất lượng sử dụng sau này, không cần cúp ảnh nhỏ hơn ảnh đang có đúng theo độ phân giải trong bảng này mà chỉ cần giữ tỷ lệ (hai chiều) của ảnh đúng với tỷ lệ ảnh muốn in.</li>
<li>Chất lượng ảnh in trên giấy phụ thuộc vào nhiều yếu tố như độ phân giải của ảnh gốc, loại máy in, chất lượng máy in, chất lượng mực in, chất lượng giấy sử dụng in ảnh.</li>
<li>Ảnh nhỏ đem phóng to bằng phần mềm chỉnh sửa ảnh thường thường có chất lượng giảm sút, mất chi tiết hình ảnh, đặc biệt nếu phóng to hơn ảnh gốc với tỷ lệ quá lớn.</li>
</ul>