证件照必须清晰对焦吗？模糊、虚焦、噪点、颗粒、像素化会不会被拒——美英加中申根官方规则对照
多数办理通道要拍清楚、对上焦，不要事后用软件「锐化补救」。美国护照纸质页（Last Updated: March 24, 2026）写：Submit a high-resolution color photo that is not blurry, grainy, or pixelated. The photo should not have visible printer dots. 不合格示例直接写 The photo is blurry / The photo appears grainy；拍摄前把相机调到最高画质。在线续签页（Last Updated: May 04, 2026）写：Make sure your photo is sharp and in focus. It should not be grainy, pixelated, or have visible printer dots. 签证 FAQ 另写：Profile shots or photos not in focus will not be accepted. 英国 GOV.UK 数字照和纸质照都写 clear and in focus；HMPO Photo standards v51.0 写 All photos must be in sharp focus，模糊、过暗、过亮不接受，自动检查含 contrast, focus and brightness。加拿大护照页写 be clear, sharp and in focus；同一页把改 sharpness 算作 altered photo，拍摄时就要清楚，不要后期锐化。中国驻柬埔寨使馆不合格例含「模糊」；驻特多使馆写不要上传低质量、低清晰度的照片；驻安哥拉使馆写「照片过于模糊」会导致拒绝或耽误。国家移民管理局全程网办页（2026-10-10 打开）讲光线、后置拍摄、关美颜，当天页面没有写「清晰对焦」。申根未见「欧盟统一禁止模糊」的单一公开法条；当天可核的 ICAO 9303 Part 3 写 scanned portrait shall be centred, clear and in sharp focus。本页不保证过审。
证件照要不要清晰对焦？美英加公开页都写了。美国护照纸质页写交高分辨率彩色照，不得 blurry、grainy、pixelated，也不应有可见印刷网点；在线续签写须 sharp and in focus。英国数字照和纸质照都写 clear and in focus；HMPO 写须 sharp focus，模糊、过暗、过亮不接受。加拿大写 clear, sharp and in focus；同时把改 sharpness 列为改图。中国驻外使馆把模糊、低清晰度写成须重交或不合格；全程网办页当天打开未见「清晰对焦」四字，讲的是光线、拍法和关美颜。申根没有查到「欧盟统一模糊法」；ICAO 9303 写人像须 clear and in sharp focus。本页不保证过审。
适用范围
- 美国签证 / 护照照片（travel.state.gov）
- 英国护照照片（GOV.UK / HMPO Photo standards）
- 加拿大护照照片（canada.ca）
- 中国普通护照 / 出入境证件 / 驻外使领馆照片
- 申根签证（ICAO / Schengen 框架）
规格
| 字段 | 取值 |
|---|---|
| 美国 清晰度 / 对焦规则 | 护照纸质申请页（https://travel.state.gov/en/passports/apply/help/photos.html，Last Updated: March 24, 2026）Resolution and quality：Submit a high-resolution color photo that is not blurry, grainy, or pixelated. The photo should not have visible printer dots. Prior to taking your photo, set your camera to the highest quality setting. 合格示例：The photo is sharp without any visible pixels or printer dots. 不合格示例：The photo is blurry（Photo Tip：Check that your camera is in focus before taking the photo.）；The photo appears grainy。同页视频要点 Avoid blurriness：Your passport photo will be rejected if it is too blurry, grainy, pixelated or printed on the wrong paper. Photos should be high resolution. 护照在线续签上传页（https://travel.state.gov/en/passports/renew-replace/online/upload-digital-photo.html，Last Updated: May 04, 2026）Resolution and Quality：Make sure your photo is sharp and in focus. It should not be grainy, pixelated, or have visible printer dots. Improve the resolution of your photo by changing the settings on your camera. When saving your photo, select the highest quality setting. To avoid making your image quality worse, do not send the image via text message. 不合格示例：Your image is blurry and you cannot clearly see your face. 签证 FAQ（https://travel.state.gov/content/travel/en/us-visas/visa-information-resources/photos/frequently-asked-questions.html）：Profile shots or photos not in focus will not be accepted. May photos be taken with a digital camera?：Yes, you can use a digital camera. Most webcams and mobile phones cannot provide images of sufficient quality. |
| 英国 清晰度 / 对焦规则 | GOV.UK 数字照（https://www.gov.uk/photos-for-passports）：The quality of your digital photo — Your photo must be: clear and in focus；in colour；unaltered by computer software。GOV.UK 纸质照（https://www.gov.uk/photos-for-passports/photo-requirements）：The quality of your printed photos — Your photos must be: printed to a professional standard；clear and in focus；unaltered by computer software。HMPO Photo standards accessible v51.0（https://www.gov.uk/government/publications/photographic-standards/photo-standards-accessible，Updated 4 March 2026）第 3 节：All photos must be in sharp focus, showing a strong definition and contrast between face and background. We will not accept photos that do not show a clear image of the customer (for example photos are blurry, too dark or too light). 第 6.2 节自动检查包括 contrast, focus and brightness。不要把审核员流程扩写成申请人须知。 |
| 加拿大 清晰度 / 对焦规则 | canada.ca 护照照片页（https://www.canada.ca/en/immigration-refugees-citizenship/services/canadian-passports/photos.html）纸质申请 Image quality：They must be clear, sharp and in focus。在线续签 Digital photo requirements 同样写 clear, sharp and in focus。同一页 What is an altered photo? 把 making technical corrections or enhancements 列为改图，举例含 colour、brightness、contrast、sharpness。两句话不要混：拍摄时必须清楚、锐利、对上焦；交件后不要用软件再做 sharpness 修正。数字续签还要求 The file must be saved directly from the original file captured by the camera，须照相馆当面拍。 |
| 中国出入境 清晰度 / 对焦规则 | 中国驻柬埔寨大使馆《关于护照/旅行证人像照片规格要求》（https://kh.china-embassy.gov.cn/lsfws/lingshifuwu2/lingshizhengjian1/202407/t20240718_11455858.htm，2024-07-18）总体要求写「五官清晰」；不合格例子含「相片太暗、损坏、模糊、或有污痕」，须重新提交。中国驻特立尼达和多巴哥大使馆「中国领事」APP FAQ（https://tt.china-embassy.gov.cn/sgxw/202203/t20220301_10646961.htm，2022-03-01）第 13 问：建议上传专业照相馆拍摄的电子证件照，不要上传低质量、低清晰度的照片；明显不符合要求的例子含「照片不清晰」。中国驻安哥拉大使馆护照旅行证须知（https://ao.china-embassy.gov.cn/chn/lsfw_0/hzlxz/hzlxzxz/，页上更新日期 2026-06-20）：以下情况会导致申请被拒绝或耽误证件办理……⑧照片过于模糊。国家移民管理局《出入境证件「全程网办」照片提交指引》（https://s.nia.gov.cn/mps/bszy/qcwbzpzy/zpzy/202405/t20240528_1001.html，2026-10-10 打开）：讲光线均匀、后置拍摄、关美颜关滤镜、条件不好去照相馆；当天打开的页面没有写「清晰对焦」这四个字，不要编造。本站 sources/*.json 未见 GA/T 1180-2014 独立条目，本页不编造该标准未核条款。 |
| 申根 / ICAO 清晰度规则 | 申根签证照片沿 ICAO 9303 生物识别人像框架。2026-10-10 检索未见「欧盟统一禁止模糊 / 虚焦 / 噪点」的单一公开法条，不要编造欧盟统一模糊法。当天可核的 ICAO Doc 9303 Part 3（https://www.icao.int/sites/default/files/publications/DocSeries/9303_p3_cons_en.pdf）：The scanned portrait shall be centred, clear and in sharp focus with no shadows. It shall not have visible compression artefacts. 成员国使领馆执行细节可能不同，提交前查办理国使领馆当年公告。 |
| 模糊 / 虚焦规则 | 模糊 / 虚焦：美国护照纸质页不合格示例写 The photo is blurry，提示先确认相机已对焦；在线续签不合格示例写 Your image is blurry and you cannot clearly see your face；签证 FAQ 写 photos not in focus will not be accepted。英国 HMPO 写 blurry 是不接受的例子。中国驻柬埔寨使馆把「模糊」列为须重交；驻安哥拉使馆把「照片过于模糊」列为会导致拒绝或耽误。公开页没有写「轻微虚焦可以过」的统一门槛，不要编造可接受的模糊像素数。看不清脸、对不上焦，按这些原文都站不住。 |
| 颗粒 / 噪点 / 像素化规则 | 颗粒 / 噪点 / 像素化：美国护照纸质页写 not blurry, grainy, or pixelated；合格示例写 sharp without any visible pixels；不合格示例写 The photo appears grainy。在线续签写 should not be grainy, pixelated。签证 FAQ 另写 low-resolution vending machine or mobile phone photos 不接受，并写 Most webcams and mobile phones cannot provide images of sufficient quality。英国、加拿大公众页当天没有单独写 grainy / pixelated 这两个词；英国写的是 clear and in focus / sharp focus，加拿大写 clear, sharp and in focus。不要把美国这三个词写成五国同一句。低分辨率放大、短信传图、过度压缩，容易落到美国已经写明的 grainy / pixelated。 |
| 印刷网点规则 | 印刷网点：美国护照纸质页写 The photo should not have visible printer dots；合格示例写 sharp without any visible pixels or printer dots。在线续签写 should not … have visible printer dots；并写 Avoid scanning or taking a picture of a printed photo since this may lower the photo quality。英国、加拿大、中国驻外使馆当天打开的公众页没有单独写「printer dots / 印刷网点」这几个字，不要编造五国统一网点禁令。翻拍冲印件常见网点、摩尔纹，美国已经把可见印刷网点写成质量不合格。 |
| 对焦 / 景深规则 | 对焦 / 景深：美国护照页提示 Check that your camera is in focus；在线续签写 sharp and in focus；签证 FAQ 写 photos not in focus will not be accepted。英国写 clear and in focus / sharp focus。加拿大写 in focus。ICAO Doc 9303 Part 3（2026-10-10 可核 PDF）写 scanned portrait shall be … clear and in sharp focus。另有 ICAO Technical Report Portrait Quality v1.0（https://www.icao.int/sites/default/files/TRIP/Publications/TR-Portrait-Quality-v1.0.pdf，与 Doc 9303 不是同一份）：The focus and depth of field of the camera shall be set so that the subject’s captured image is in focus from nose to ears. In most cases, a depth of field of 15 cm will be sufficient. The background behind the subject may be out of focus. 这是技术报告 Best Practice，不要写成「欧盟法律强制 15 厘米」或「申根统一景深法」。申请人侧能做的是：脸要对上焦，不要只对到背景或鼻尖而耳朵糊掉。 |
| 如何拍清楚 | 怎么拍清楚（只收官方页已经写过的做法）：美国护照纸质页：拍摄前把相机调到最高画质；先确认对上焦；交高分辨率彩色照。在线续签：改相机设置提高分辨率；保存时选最高画质；不要用短信传图（会降低质量）；不要对印刷照再拍或扫描。签证 FAQ：可用数码相机；多数 webcam 和手机未必够质量。英国：数字照至少 600×750 像素；须 clear and in focus，且 unaltered by computer software。加拿大：须照相馆当面拍；文件从相机原始拍摄直接保存；不要后期改 sharpness。中国全程网办指引：光线均匀、后置拍摄或去照相馆、关美颜关滤镜；驻外使馆建议专业照相馆电子版，不要交低清晰度或模糊图。糊了、虚了、有颗粒，重拍比软件锐化更贴近这些原文。 |
| 常见退回原因 | blurry / photos not in focus（美国护照示例与签证 FAQ）；grainy / pixelated / visible printer dots（美国护照纸质页与在线续签）；低质量扫描件、短信传图降低画质（美国在线续签）；webcam / 低分辨率手机或自动售货机照片质量不够（美国签证 FAQ）；blurry、过暗、过亮（英国 HMPO）；不是 clear, sharp and in focus，或后期改 sharpness（加拿大）；模糊、低清晰度、照片不清晰、照片过于模糊（中国驻柬埔寨 / 特多 / 安哥拉使馆）。 |
| 适用场景 | 跨境签证 / 护照照片清晰度、对焦、模糊、噪点、颗粒、像素化与印刷网点规则横向对比；具体执行以办理国使领馆或移民局当年公告为准 |
| 备注 | 不要把美国「grainy / pixelated / printer dots」写成英加中申根公众页也有同一句。不要把加拿大「拍摄须 sharp」写成「可以后期锐化」——改 sharpness 在 canada.ca 算改图。不要把全程网办页写成已经写了「清晰对焦」——2026-10-10 打开的页面没有这四个字。不要编造欧盟统一模糊法，也不要把 ICAO TR Portrait Quality 的 15 cm 景深写成申根强制法条。本页不保证过审。 |
注意事项
- ⚠ 美国护照纸质页、在线续签和签证 FAQ 对清晰度的句子不完全一样，不要混成一条。
- ⚠ 加拿大要求拍摄时 clear, sharp and in focus，同时把改 sharpness 列为改图；不要后期锐化「补救」。
- ⚠ 中国全程网办页（2026-10-10 打开）没有写「清晰对焦」；驻外使馆页写了模糊 / 低清晰度。按你实际提交的通道看当年页。
- ⚠ ICAO TR Portrait Quality 的 15 cm 景深是技术报告 Best Practice，不是「欧盟统一模糊法」。
- ⚠ 本页只整理公开官方规则，不保证任何一次过审；最终以受理机关审核为准。
直接答案
证件照糊了、虚了、有颗粒或能看见印刷网点，还会不会过？按 2026-10-10 已经打开的公开页：美英加都写了要清楚、对上焦；美国还点名 grainy、pixelated、visible printer dots；中国驻外使馆把模糊、低清晰度写成须重交；申根没有查到「欧盟统一模糊法」。
美国护照纸质页写：Submit a high-resolution color photo that is not blurry, grainy, or pixelated. The photo should not have visible printer dots. 在线续签写：Make sure your photo is sharp and in focus. 签证 FAQ 写：Profile shots or photos not in focus will not be accepted.
英国 GOV.UK 数字照和纸质照都写 clear and in focus。加拿大写 be clear, sharp and in focus，同时把改 sharpness 算作改图。本页只对照原文，不保证任何一次过审。
美国：高分辨率、对上焦，不要糊、不要颗粒、不要网点
travel.state.gov 护照照片页（https://travel.state.gov/en/passports/apply/help/photos.html，Last Updated: March 24, 2026）Resolution and quality 一节写：Submit a high-resolution color photo that is not blurry, grainy, or pixelated. The photo should not have visible printer dots. 同一节写：Prior to taking your photo, set your camera to the highest quality setting.
同页合格示例写：The photo is sharp without any visible pixels or printer dots. 不合格示例写：The photo is blurry（提示 Check that your camera is in focus before taking the photo.）；The photo appears grainy。视频要点 Avoid blurriness 写：Your passport photo will be rejected if it is too blurry, grainy, pixelated or printed on the wrong paper. Photos should be high resolution.
在线续签上传页（https://travel.state.gov/en/passports/renew-replace/online/upload-digital-photo.html，Last Updated: May 04, 2026）Resolution and Quality 写：Make sure your photo is sharp and in focus. It should not be grainy, pixelated, or have visible printer dots. Improve the resolution of your photo by changing the settings on your camera. When saving your photo, select the highest quality setting. To avoid making your image quality worse, do not send the image via text message. 不合格示例写：Your image is blurry and you cannot clearly see your face.
签证 FAQ（https://travel.state.gov/content/travel/en/us-visas/visa-information-resources/photos/frequently-asked-questions.html）问答 pose 时写：Your photo must be a clear shot of your entire face horizontally centered in the photo. Profile shots or photos not in focus will not be accepted. 问答可否用数码相机：Yes, you can use a digital camera. Most webcams and mobile phones cannot provide images of sufficient quality. 问答 snapshots / 自动售货机 / 手机照：low-resolution vending machine or mobile phone photos … are not acceptable.
英国：数字照和纸质照都要 clear and in focus
GOV.UK《Get a passport photo》数字照（https://www.gov.uk/photos-for-passports）质量要求写：Your photo must be: clear and in focus；in colour；unaltered by computer software。同一节还写至少 600 pixels wide and 750 pixels tall。
纸质照（https://www.gov.uk/photos-for-passports/photo-requirements）质量同样写：printed to a professional standard；clear and in focus；unaltered by computer software。
HMPO《Photo standards (accessible)》v51.0（https://www.gov.uk/government/publications/photographic-standards/photo-standards-accessible，Updated 4 March 2026）第 3 节写：All photos must be in sharp focus, showing a strong definition and contrast between face and background. We will not accept photos that do not show a clear image of the customer (for example photos are blurry, too dark or too light).
第 6.2 节写自动检查包括 contrast, focus and brightness。这是系统会查的项，不是让申请人去走审核员流程。公众页没有单独写 grainy、pixelated 或 printer dots，不要把美国那三个词安到 GOV.UK 上。
加拿大：拍摄须 sharp；后期锐化算改图
canada.ca 护照照片页（https://www.canada.ca/en/immigration-refugees-citizenship/services/canadian-passports/photos.html）纸质申请 Image quality 写：They must be clear, sharp and in focus。在线续签 Digital photo requirements 同样写 clear, sharp and in focus。
同一页 What is an altered photo? 写：making technical corrections or enhancements, such as changes to: colour；brightness；contrast；sharpness。两句话要分开：拍的时候必须清楚、锐利、对上焦；交出去之前不要用软件再做 sharpness 修正。
数字续签还要求 be taken in person by a commercial photographer；The file must be saved directly from the original file captured by the camera。糊了应重拍，不要自己锐化一张交差。
中国：驻外使馆写模糊不合格；全程网办页当天没写「清晰对焦」
中国驻柬埔寨大使馆《关于护照/旅行证人像照片规格要求》（https://kh.china-embassy.gov.cn/lsfws/lingshifuwu2/lingshizhengjian1/202407/t20240718_11455858.htm，2024-07-18）总体要求写「五官清晰」。不合格例子写：「相片太暗、损坏、模糊、或有污痕」，须重新提交。
中国驻特立尼达和多巴哥大使馆《使用「中国领事」APP 常见问题解答》（https://tt.china-embassy.gov.cn/sgxw/202203/t20220301_10646961.htm，2022-03-01）第 13 问写：「建议您上传专业照相馆拍摄的电子证件照，不要上传低质量、低清晰度的照片」。同一问把「照片不清晰」列为明显不符合要求的例子。
中国驻安哥拉大使馆《护照旅行证须知》（https://ao.china-embassy.gov.cn/chn/lsfw_0/hzlxz/hzlxzxz/，页上更新日期 2026-06-20）写：以下情况会导致申请被拒绝或耽误证件办理……⑧照片过于模糊。
国家移民管理局《出入境证件「全程网办」照片提交指引》（https://s.nia.gov.cn/mps/bszy/qcwbzpzy/zpzy/202405/t20240528_1001.html，2026-10-10 打开）讲的是：光线均匀、不要前置自拍、后置拍摄或去照相馆、关美颜关滤镜。当天打开的页面没有「清晰对焦」这四个字。不要把使馆页的「模糊」安到全程网办页上。
本站 sources/*.json 未见 GA/T 1180-2014 独立条目，本页不编造该标准未核条款。
申根 / ICAO：要清晰对焦，不要编造欧盟模糊法
申根签证照片沿用 ICAO 9303 生物识别人像框架。2026-10-10 检索未见「欧盟统一禁止模糊、虚焦或噪点」的单一公开法条。不要编造欧盟统一模糊法。
当天可核的 ICAO Doc 9303 Part 3（https://www.icao.int/sites/default/files/publications/DocSeries/9303_p3_cons_en.pdf）写：The scanned portrait shall be centred, clear and in sharp focus with no shadows. It shall not have visible compression artefacts.
另有 ICAO Technical Report Portrait Quality v1.0（https://www.icao.int/sites/default/files/TRIP/Publications/TR-Portrait-Quality-v1.0.pdf）。这份是技术报告，不是 9303 正文。第 5.2.4 节写：The focus and depth of field of the camera shall be set so that the subject’s captured image is in focus from nose to ears. In most cases, a depth of field of 15 cm will be sufficient. The background behind the subject may be out of focus. 15 cm 是 Best Practice，不要写成申根强制法条。
成员国使领馆执行细节可能不同。提交前打开办理国使领馆当年照片页。
模糊、虚焦、噪点、颗粒、像素化、印刷网点怎么区分
公开页用的词不一样，不要互相套。
- 模糊 / 虚焦：美国写 blurry、not in focus；英国 HMPO 写 blurry；中国驻外使馆写模糊、照片不清晰、过于模糊。对不上焦、看不清脸，按这些原文都站不住。
- 颗粒 / 噪点 / 像素化：美国护照页写 grainy、pixelated，合格示例写 without any visible pixels。英国、加拿大公众页当天没有这两个词。
- 印刷网点：美国护照纸质页和在线续签都写 visible printer dots。英加中当天公众页没有单独写网点。
- 后期锐化：加拿大把改 sharpness 列为改图；美国要未经数字改动的原图；英国写 unaltered by computer software。拍摄时清楚，不要事后锐化补救。
怎么拍清楚
只做官方页已经写过的事，不要发明「保证过审」的拍摄秘籍。
- 美国护照纸质页：拍摄前把相机调到最高画质；先确认对上焦；交高分辨率彩色照。
- 美国在线续签：改相机设置提高分辨率；保存时选最高画质；不要用短信传图；不要对印刷照再拍或扫描。
- 美国签证 FAQ：可用数码相机；多数 webcam 和手机未必够质量。
- 英国：数字照至少 600×750 像素；须 clear and in focus，且未经计算机软件改动。
- 加拿大：照相馆当面拍；文件从相机原始拍摄直接保存；不要后期改 sharpness。
- 中国全程网办指引：光线均匀、后置拍摄或去照相馆、关美颜关滤镜。驻外使馆：专业照相馆电子版，不要交低清晰度或模糊图。
提交前自查
拍完、导出后先看这几项，再决定要不要交。
- 脸是不是对上焦，能不能看清眼睛和五官——美国写 blurry / not in focus，英国写 blurry，中国驻外使馆写模糊。
- 有没有颗粒、色块、放大后的马赛克——美国写 grainy / pixelated。
- 有没有印刷网点、摩尔纹——美国写 visible printer dots；翻拍冲印件常见这一条。
- 有没有用短信传图、反复压缩或后期锐化——美国写不要短信传图；加拿大把改 sharpness 算改图；英国写 unaltered by computer software。
- 光线、阴影见 shadows-lighting-in-id-photo；美颜修图见 beauty-filter-retouching-in-id-photo；翻拍扫描见 rephotograph-scan-printed-id-photo。本页只讲清晰度。
官方依据（摘要）
美国护照纸质页：high-resolution；not blurry, grainy, or pixelated；should not have visible printer dots；拍摄前最高画质；不合格例 blurry / grainy。
美国护照在线续签：sharp and in focus；should not be grainy, pixelated, or have visible printer dots；保存最高画质；不要短信传图。
美国签证 FAQ：photos not in focus will not be accepted；多数 webcam / 手机未必够质量；low-resolution vending machine or mobile phone photos 不接受。
英国：GOV.UK 数字照 / 纸质照——clear and in focus；unaltered by computer software。HMPO——sharp focus；blurry / too dark / too light 不接受；自动检查 contrast, focus and brightness。
加拿大：clear, sharp and in focus；改 sharpness 属于 altered photo；数字续签须照相馆原始文件。
中国：驻柬埔寨使馆——五官清晰；模糊须重交。驻特多使馆——不要上传低质量、低清晰度的照片。驻安哥拉使馆——照片过于模糊会导致拒绝或耽误。全程网办页——光线、拍法、关美颜；2026-10-10 打开未见「清晰对焦」。
申根 / ICAO：9303 Part 3——clear and in sharp focus。TR Portrait Quality——鼻子到耳朵对上焦，15 cm 为 Best Practice。未见欧盟统一模糊法。
本页不保证过审；规则以各官方站点当年文本为准。
