{"id":32,"date":"2010-03-29T15:29:01","date_gmt":"2010-03-29T15:29:01","guid":{"rendered":"http:\/\/chan.nds.hk\/blog\/?p=32"},"modified":"2010-03-29T15:29:01","modified_gmt":"2010-03-29T15:29:01","slug":"%e8%bf%91%e6%94%9d%e6%8e%a5%e5%9c%88%e3%80%81%e5%80%92%e6%8e%a5%e7%92%b0%e3%80%81%e9%8f%a1%e9%a0%ad%e5%b0%8d%e6%8e%a5%e7%92%b0","status":"publish","type":"post","link":"https:\/\/chan.nds.hk\/blog\/?p=32","title":{"rendered":"\u8fd1\u651d\u63a5\u5708\u3001\u5012\u63a5\u74b0\u3001\u93e1\u982d\u5c0d\u63a5\u74b0"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p style=\"margin-top: 3px; margin-right: 3px; margin-bottom: 3px; margin-left: 3px; \"><span class=\"Apple-style-span\" style=\"color: rgb(8, 8, 8); font-family: Verdana, Arial; line-height: 18px; \">\u8fd1\u651d\u63a5\u5708\u3001\u5012\u63a5\u74b0\u3001\u93e1\u982d\u5c0d\u63a5\u74b0\u4ecb\u7d39<br \/>\n\t<strong><font color=\"#000080\">\u8fd1\u651d\u63a5\u5708<\/font><\/strong>\uff1a\u9023\u63a5\u5728\u6a5f\u8eab\u8207\u93e1\u982d\u4e4b\u9593\uff0c\u4e00\u822c\u67091\uff0c2\uff0c3\u865f\u4e09\u500b\u7a7a\u5708\uff0c\u7a7a\u5708\u8d8a\u9577\uff0c\u500d \u7387\u8d8a\u5927\uff1b\u9069\u7528\u65bc\u6a19\u982d\u548c\u4e2d\u3001\u9577\u7126\u93e1\u982d\uff0c\u7126\u8ddd\u8d8a\u9577\uff0c\u500d\u7387\u8d8a\u5927\uff0c\u52a0\u5168\u90e8\u4e09\u500b\u7a7a\u5708\u6642\uff0c70-300\u93e1\u982d300mm\u7aef\u7684\u500d\u7387\u7d041:2\uff0c\u5de5\u4f5c\u8ddd\u96e2\u8f03\u5927\uff0c\u7d0485cm\uff0c\u62cd \u651d\u6606\u87f2\u7b49\u6bd4\u8f03\u65b9\u4fbf\uff1b28-105\u93e1\u982d105mm\u7aef\u7684\u500d\u7387\u7d041:0.8\uff0c\u5de5\u4f5c\u8ddd\u96e2\u5f88\u5c0f\uff0c\u50c54cm\uff1b\u6a19\u982d50mm\u7aef\u7684\u500d\u7387\u7d041:0.6\uff0c\u5de5\u4f5c\u8ddd\u96e2\u4e5f\u50c5 4.5cm\uff1b\u666f\u6df1\u90fd\u6bd4\u8f03\u5927\uff08\u76f8\u5c0d\u4e0b\u9762\u5169\u7a2e\u63a5\u74b0\uff09\uff1b\u66dd\u5149\u88dc\u511f\uff1a\u53ea\u52a01\u865f\u62162\u865f\u7a7a\u5708\u6642\u7d04\u52a0\u4e00\u6a94\uff08\u6bd4\u6b63\u63a5\u6642\uff09\uff0c\u53ea\u52a03\u865f\u7a7a\u5708\u6642\u7d04\u52a0\u4e8c\u6a94\uff0c\u52a01\uff0c2\uff0c3\u865f\u7a7a\u5708\u6642\u7d04 \u52a0\u4e09\u6a94\u3002<\/p>\n<p>\t<strong><font color=\"#000080\">\u5012\u63a5\u74b0<\/font><\/strong>\uff1a\u9023\u63a5\u5728\u6a5f\u8eab\u8207\u93e1\u982d\u4e4b\u9593\uff0c\u9069\u7528\u65bc\u6a19\u982d\u6216\u5ee3\u89d2\u3001\u4e2d\u7126\u93e1\u982d\uff08\u4e0d\u9069\u7528\u65bc\u9577\u7126\u93e1\u982d\uff09\uff0c<strong><font color=\"#000080\">\u7126\u8ddd\u8d8a\u77ed\uff0c\u500d\u7387\u8d8a\u5927\uff1b<\/font><\/strong>\u5012 \u63a5105mm\u7aef\uff08\u93e1\u982d\u8abf\u7126\u74b0\u57280.5m\uff09\u7684\u500d\u7387\u7d041:1\uff1b50mm\u7aef\u7d041.7:1\uff1b28mm\u7aef\u7d042.7:1\uff1b20 mm\u7aef\u7d043.6:1\uff0c\u6a19\u982d50mm\u7d041:1.2\uff08\u500d\u7387\u5c0f\u65bc\u8b8a\u7126\u93e1\u982d\u768450mm\uff09\uff1b\u5012\u63a528mm\u300120 mm\u548c\u6a19\u982d\u6642\u93e1\u982d\u8abf\u7126\u74b0\u57fa\u672c\u5931\u6548\uff1b\u666f\u6df1\u5f88\u5c0f\uff1b\u5de5\u4f5c\u8ddd\u96e2\u8f03\u5c0f\uff1a\u6a19\u982d\u548c105mm\u6642\u7d049cm\uff0c28mm\u6642\u7d044.5cm\uff0c20mm\u6642\u7d043.5cm\uff1b\u9069\u5408\u65bc\u7ffb\u62cd\u6216 \u62cd\u651d\u975c\u7269\uff1b\u66dd\u5149\u88dc\u511f\uff1a\u6bd4\u6b63\u63a5\u6642\u52a0\u4e8c\u6a94\uff1b\u5012\u63a5\u9084\u6709\u4e00\u500b\u597d\u8655\uff1a\u53ea\u8981\u5012\u63a5\u74b0\u8207\u6a5f\u8eab\u662f\u76f8\u540c\u5361\u53e3\uff0c\u6a5f\u8eab\u8207\u93e1\u982d\u53ef\u4ee5\u662f\u4e0d\u540c\u7684\u5361\u53e3\uff0c\u6bd4\u5982\u5ec9\u50f9\u7684\u4fc4\u7f85\u65af\u8d85\u5ee3\u89d2\u93e1\u982d\u53ef\u5012\u63a5\u5728 \u4efb\u4f55\u6a5f\u8eab\u4e0a\uff0c\u7372\u5f97\u6975\u5927\u7684\u500d\u7387\uff0c\u4e0d\u904e\uff0c\u72d7\u982d\u5012\u63a5\u4ee5\u5f8c\u9084\u662f\u72d7\u982d\u54e6\uff01<\/p>\n<p>\t<strong><font color=\"#000080\">\u93e1\u982d\u5c0d\u63a5<\/font><\/strong>\uff1a\u9023\u63a5\u5728\u4e2d\u3001\u9577\u7126\u93e1\u982d\uff08\u6b64\u93e1\u982d\u63a5\u65bc\u6a5f\u8eab\uff09\u8207\u5ee3\u89d2\u93e1\u982d\u4e4b\u9593\uff0c\u5ee3\u89d2\u93e1\u982d\u662f\u5012\u904e\u4f86\u7684\uff0c\u5c31\u76f8\u7576\u65bc\u4e00\u7247\u77ef\u6b63\u826f\u597d\u7684\u8fd1\u651d\u93e1\u7247\uff1b<strong><font color=\"#000080\">\u9577\u7126\u7126\u8ddd\u8d8a\u9577\uff0c\u5ee3\u89d2\u7126\u8ddd\u8d8a\u77ed\uff0c\u500d\u7387\u8d8a\u5927\uff0c<\/font><\/strong>&nbsp;300mm \u5c0d\u63a5105mm\u7684\u500d\u7387\u7d045:1\uff0c300mm\u5c0d\u63a520mm\u7684\u500d\u7387\u53ef\u905415:1\uff0c\u5df2\u63a5\u8fd1\u986f\u5fae\u651d\u5f71\uff01\u666f\u6df1\u6975\u5c0f\uff08&lt;0.5mm\uff09\uff0c\u62cd\u651d\u6642\u9577\u7126\u93e1\u982d\u7684\u7126\u8ddd\u4e0d\u80fd \u5c0f\u65bc200mm\uff0c\u7126\u8ddd\u5fc5\u9808\u8abf\u5230\u6700\u9577\uff08\u5927\uff09\uff0c\u5ee3\u89d2\u93e1\u982d\u7684\u5149\u5708\u5fc5\u9808\u958b\u5230\u6700\u5927\uff0c\u5426\u5247\u6703\u6709\u6697\u89d2\uff0c\u5de5\u4f5c\u8ddd\u96e2\u5f88\u5c0f\uff0c\u7d043cm\uff1b\u66dd\u5149\uff1a\u53c3\u7167\u9577\u7126\u93e1\u982d\u6e2c\u5149\u5373\u53ef\uff0c\u9019\u4e00\u9ede\u6bd4\u8fd1 \u651d\u63a5\u5708\u548c\u5012\u63a5\u74b0\u90fd\u65b9\u4fbf\uff01<\/p>\n<p>\t\u4ee5\u4e0a\u62cd\u651d\u6642\u5747\u53d6\u4e0bUV\u93e1\uff0c\u7279\u5225\u662f\u93e1\u982d\u5c0d\u63a5\u6642\uff0c\u4e00\u5b9a\u4e0d\u80fd\u52a0UV\u6216\u5176\u5b83\u6ffe\u93e1\u3002<\/p>\n<p>\t\u570b\u7522\u7684\u8fd1\u651d\u63a5\u5708\u548c\u5012\u63a5\u74b0\u9084\u6709\u5169\u500b\u65b9\u4fbf\u7684\u512a\u9ede\uff1a1.\u540c\u4e00\u7a2e\u5361\u53e3\u7684\u4ee5\u4e0a\u4e8c\u7a2e\u63a5\u74b0\u7684\u300c\u63a5\u6a5f\u8eab\u90e8\u5206\u300d\u662f\u76f8\u540c\u7684\uff0c\u53ef\u4ee5\u516c\u7528\uff0c\u4e5f\u5c31\u662f\u4f60\u53ea\u8981\u8cb7\u4e00\u5957\u8fd1\u651d\u63a5\u5708\u548c\u534a\u5957\u5012\u63a5\u74b0\uff0c\u5c31\u7b49\u65bc\u6709\u4e86\u5169\u5957\u63a5\u74b0\uff1b2.\u8fd1\u651d\u63a5\u5708\u4e2d\u7684\u7a7a\u5708\uff0c\u4e5f\u53ef\u4ee5\u7528\u5728\u5012\u63a5\u74b0\u4e0a\uff0c\u5012\u63a5\u6642\u758a\u52a0\u7a7a\u5708\uff0c\u93e1\u982d\u5411\u5916\u5ef6\u4f38\uff0c\u500d\u7387\u5c07\u66f4\u5927\uff01<\/span><\/p>\n<p style=\"margin-top: 3px; margin-right: 3px; margin-bottom: 3px; margin-left: 3px; \"><span class=\"Apple-style-span\" style=\"color: rgb(8, 8, 8); font-family: Verdana, Arial; line-height: 18px; \"><br \/>\n\t\u9a30\u9f8d28-105\u93e1\u982d\u53c3\u6578\uff1a105mm\u7aef\u5de5\u4f5c\u8ddd\u96e2\u7d0445cm\uff0c\u500d\u7387\u7d041:5.4\u3002<\/p>\n<p>\t\u9a30\u9f8d70-300\u93e1\u982d\u53c3\u6578\uff1a300mm\u7aef\u5de5\u4f5c\u8ddd\u96e2\u7d04150cm\uff0c\u500d\u7387\u7d041:4\u3002<\/p>\n<p>\tNIKKOR 50\/1.8D\u93e1\u982d\u53c3\u6578\uff1a\u5de5\u4f5c\u8ddd\u96e2\u7d0440cm\uff0c\u500d\u7387\u7d041:6\u3002<\/p>\n<p>\t\u9019\u4e09\u8005\u7684\u5171\u540c\u9ede\u53ea\u662f\uff1a\u90fd\u662f\u62cd\u5fae\u8ddd\uff1b\u5176\u5be6\u5b83\u5011\u7684\u7d50\u69cb\u3001\u9069\u7528\u6027\u3001\u4f7f\u7528\u65b9\u6cd5\u3001\u62cd\u651d\u6548\u679c\u90fd\u6709\u5f88\u5927\u7684\u4e0d\u540c\uff0c\u5404\u6709\u81ea\u5df1\u7684\u512a\u9ede\u3001\u7f3a\u9ede\u548c\u7279\u9ede\u3002\u60a8\u4e0d\u59a8\u4f9d\u64da\u81ea\u5df1\u7684\u8208\u8da3\u3001\u611b\u597d\u548c\u73fe\u6709\u7684\u6a5f\u8eab\u3001\u93e1\u982d\u4f86\u9078\u64c7\u3002<\/span><\/p>\n<p style=\"margin-top: 3px; margin-right: 3px; margin-bottom: 3px; margin-left: 3px; \"><span class=\"Apple-style-span\" style=\"color: rgb(8, 8, 8); font-family: Verdana, Arial; line-height: 18px; \"><font size=\"3\"><font face=\"Times New Roman\"><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u8fd1\u62cd\u65b9\u9762\uff0c\u56e0\u70ba<\/span>200mm f\/4<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u7684<\/span>52mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u53e3\u5f91\uff0c\u5b83\u53ef\u4ee5\u4f7f\u7528<\/span>Nikon<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u7684<\/span>#3T<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff08<\/span>+1.5<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff09\u8207<\/span>#4T<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff08<\/span>+2.9<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff09\u5169\u6b3e\u8fd1\u62cd\u93e1\u3002\u56e0\u70ba\u5c48\u5149\u5ea6\u70ba<\/span>+<em>d<\/em><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u8fd1\u62cd\u93e1\u7684\u7126\u8ddd\u662f<\/span>1000\/d<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u6240\u4ee5<\/span>#3T<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u8207<\/span>#4T<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u7684\u7126\u8ddd\u5206\u5225\u662f<\/span>1000\/1.5<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u8207<\/span>1000\/2.9<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3002\u5982\u679c\u76f8\u6a5f\u4e0a\u93e1\u982d\u7126\u8ddd\u70ba<\/span><em>F<\/em><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001\u63a5\u5728\u8a72\u93e1\u982d\u524d\u65b9\u900f\u93e1\u7684\u7126\u8ddd\u70ba<\/span><em>f<\/em><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u7406\u8ad6\u4e0a\u7684\u653e\u5927\u7387\u70ba<\/span><em>M<\/em>&nbsp;=&nbsp;<em>F<\/em>\/<em>f<\/em><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff1b\u5982\u679c\u628a<\/span>#3T<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u8207<\/span>#4T<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u88dd\u5728<\/span>200mm f\/4<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u524d\u65b9\uff0c\u7406\u8ad6\u4e0a\u7684\u653e\u5927\u7387\u5c31\u5206\u5225\u662f<\/span>0.3= 200\/(1000\/1.5)<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u8207<\/span>0.58 = 200\/(1000\/2.9)<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u4e0d\u904e\u5be6\u969b\u653e\u5927\u7387\u6703\u56e0\u70ba\u93e1\u982d\u7684\u5149\u5b78\u7d50\u69cb\u800c\u6709\u4e9b\u5dee\u7570\u3002<\/span><\/font><\/font><\/span><\/p>\n<div><span class=\"Apple-style-span\" style=\"color: rgb(8, 8, 8); font-family: Verdana, Arial; line-height: 18px; \"><font face=\"Times New Roman\" size=\"3\">&nbsp;<\/font><\/span><\/div>\n<div><span class=\"Apple-style-span\" style=\"color: rgb(8, 8, 8); font-family: Verdana, Arial; line-height: 18px; \"><font size=\"3\"><font face=\"Times New Roman\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u9019\u500b<\/span>200mm f\/4<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u662f\u5012\u63a5\uff08<\/span>lens reversal<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff09\u6280\u5de7\u5e38\u7528\u7684\u93e1\u982d\u3002\u628a<\/span>24mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001<\/span>50mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001\u8207<\/span>100mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u7684\u93e1\u982d\u88dd\u5728<\/span>200mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u524d\u65b9\uff08\u628a\u5b83\u5011\u770b\u6210\u662f\u5c48\u5149\u5ea6\u5206\u5225\u662f<\/span>+41.7 = 1000\/24<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001<\/span>+20 = 1000\/50<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001\u8207<\/span>+10 = 1000\/100<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u7684\u8fd1\u62cd\u93e1\u4f7f\u7528\uff09\uff0c\u5f97\u4f86\u7684\u653e\u5927\u7387\u5c31\u5206\u5225\u662f<\/span>8.3 = 200\/24<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001<\/span>4 = 200\/50<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001\u8207<\/span>2 = 200\/100<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u90fd\u5927\u904e<\/span>1<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff1a<\/span>1<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3002\u5728\u5f80\u65e5\u6c92\u6709<\/span>1<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff1a<\/span>1<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u5fae\u8ddd\u93e1\u6642\uff0c\u9019\u500b\u65b9\u5f0f\u662f\u5f88\u6d41\u884c\u3001\u7528\u4f86\u63d0\u9ad8\u653e\u5927\u7387\u7684\u624b\u6cd5\u3002\u4e0b\u9762\u5de6\u908a\u662f\u628a<\/span>Nikon AF 24mm f\/2.8 D<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u5012\u63a5\u5728<\/span>200mm f\/4<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u524d\u65b9\u7684\u6a23\u5b50\uff0c\u653e\u5927\u7387\u70ba<\/span>8.3X<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3002\u5728\u7406\u8ad6\u4e0a\uff0c\u6b63\u63a5\u8207\u5012\u63a5\u7684\u6548\u679c\u76f8\u540c\uff0c\u4f46\u5be6\u969b\u4e0a\u56e0\u70ba\u93e1\u982d\u7684\u5149\u5b78\u8a2d\u8a08\u8207\u63a5\u74b0\u7b49\u56e0\u7d20\uff0c\u5012\u63a5\u6bd4\u8f03\u5bb9\u6613\u9054\u5230\u8f03\u597d\u7684\u6548\u679c\u3002<\/span><\/font><\/font><\/span><\/div>\n<div><span class=\"Apple-style-span\" style=\"color: rgb(8, 8, 8); font-family: Verdana, Arial; line-height: 18px; \">&nbsp;<\/span><\/div>\n<div><span class=\"Apple-style-span\" style=\"color: rgb(8, 8, 8); font-family: Verdana, Arial; line-height: 18px; \"><font size=\"3\"><font face=\"Times New Roman\"><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u53e6\u4e00\u500b\u8fd1\u62cd\u624b\u6cd5\u662f\u7528\u5ef6\u4f38\u7b52\uff08<\/span>extension tube<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3001\u6216\u7a31\u63a5\u5beb\u74b0\uff09\uff1b\u4e00\u822c\u800c\u8a00\uff0c\u5982\u679c\u5ef6\u4f38\u7b52\u7684\u7e3d\u9577\u662f<\/span><em>K<\/em><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u800c\u4f7f\u7528\u7684\u93e1\u982d\u7126\u8ddd\u70ba<\/span><em>F<\/em><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u65bc\u662f\u7406\u8ad6\u653e\u5927\u7387\u70ba<\/span><em>M<\/em>&nbsp;=&nbsp;<em>K<\/em>\/<em>F<\/em><span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u3002\u56e0\u70ba<\/span>200mm f\/4<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u7684\u7126\u8ddd\u662f<\/span>200mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u5ef6\u4f38\u7b52\u7684\u9577\u5ea6\u4e5f\u5f97\u5728<\/span>200mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u4e0a\u4e0b\u624d\u80fd\u505a\u5230<\/span>1<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff1a<\/span>1<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u6240\u4ee5\u7528\u5ef6\u4f38\u7b52\u63d0\u9ad8\u653e\u5927\u7387\u4e26\u4e0d\u5341\u5206\u5be6\u969b\u3002\u524d\u9762\u7167\u7247\u4e2d\u53f3\u908a\u90a3\u4e00\u5f35\u7528\u4e86\u4e09\u500b\u5ef6\u4f38\u7b52\u3001\u7e3d\u9577\u70ba<\/span>68mm<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u6240\u4ee5\u653e\u5927\u7387\u70ba<\/span><em>M<\/em>&nbsp;= 68\/200 = 0.34<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\uff0c\u8207\u4f7f\u7528<\/span>Nikon #3T<span style=\"font-family: \u65b0\u7d30\u660e\u9ad4; \">\u8fd1\u62cd\u93e1\u7684\u653e\u5927\u7387\u5f88\u8fd1\u3002\u6240\u4ee5\uff0c\u5f9e\u4e0a\u9762\u7684\u653e\u5927\u7387\u516c\u5f0f\uff0c\u9577\u7126\u8ddd\u93e1\u982d\u6bd4\u8f03\u9069\u5408\u7528\u8fd1\u62cd\u93e1\u3001\u77ed\u7126\u8ddd\u6bd4\u8f03\u9069\u5408\u5ef6\u4f38\u7b52\u3002<\/span><\/font><\/font><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<a href=\"https:\/\/chan.nds.hk\/blog\/?p=32\"><img width=\"150\" height=\"150\" src=\"https:\/\/chan.nds.hk\/blog\/wp-content\/plugins\/thumbnail-for-excerpts\/tfe_no_thumb.png\" class=\"alignleft wp-post-image tfe\" alt=\"\" title=\"\" \/><\/a><p>&nbsp; \u8fd1\u651d\u63a5\u5708\u3001\u5012\u63a5\u74b0\u3001\u93e1\u982d\u5c0d\u63a5\u74b0\u4ecb\u7d39 \u8fd1\u651d\u63a5\u5708\uff1a\u9023\u63a5\u5728\u6a5f\u8eab\u8207\u93e1\u982d\u4e4b\u9593\uff0c\u4e00\u822c\u67091\uff0c2\uff0c3\u865f\u4e09\u500b\u7a7a\u5708\uff0c\u7a7a\u5708\u8d8a\u9577\uff0c\u500d \u7387\u8d8a\u5927\uff1b\u9069\u7528\u65bc\u6a19\u982d\u548c\u4e2d\u3001\u9577\u7126\u93e1\u982d\uff0c\u7126\u8ddd\u8d8a\u9577\uff0c\u500d\u7387\u8d8a\u5927\uff0c\u52a0\u5168\u90e8\u4e09\u500b\u7a7a\u5708\u6642\uff0c70-300\u93e1\u982d300mm\u7aef\u7684\u500d\u7387\u7d041:2\uff0c\u5de5\u4f5c\u8ddd\u96e2\u8f03\u5927\uff0c\u7d0485cm\uff0c\u62cd \u651d\u6606\u87f2\u7b49\u6bd4\u8f03\u65b9\u4fbf\uff1b28-105\u93e1\u982d105mm\u7aef\u7684\u500d\u7387\u7d041:0.8\uff0c\u5de5\u4f5c\u8ddd\u96e2\u5f88\u5c0f\uff0c\u50c54cm\uff1b\u6a19\u982d50mm\u7aef\u7684\u500d\u7387\u7d041:0.6\uff0c\u5de5\u4f5c\u8ddd\u96e2\u4e5f\u50c5 4.5cm\uff1b\u666f\u6df1\u90fd\u6bd4\u8f03\u5927\uff08\u76f8\u5c0d\u4e0b\u9762\u5169\u7a2e\u63a5\u74b0\uff09\uff1b\u66dd\u5149\u88dc\u511f\uff1a\u53ea\u52a01\u865f\u62162\u865f\u7a7a\u5708\u6642\u7d04\u52a0\u4e00\u6a94\uff08\u6bd4\u6b63\u63a5\u6642\uff09\uff0c\u53ea\u52a03\u865f\u7a7a\u5708\u6642\u7d04\u52a0\u4e8c\u6a94\uff0c\u52a01\uff0c2\uff0c3\u865f\u7a7a\u5708\u6642\u7d04 \u52a0\u4e09\u6a94\u3002 \u5012\u63a5\u74b0\uff1a\u9023\u63a5\u5728\u6a5f\u8eab\u8207\u93e1\u982d\u4e4b\u9593\uff0c\u9069\u7528\u65bc\u6a19\u982d\u6216\u5ee3\u89d2\u3001\u4e2d\u7126\u93e1\u982d\uff08\u4e0d\u9069\u7528\u65bc\u9577\u7126\u93e1\u982d\uff09\uff0c\u7126\u8ddd\u8d8a\u77ed\uff0c\u500d\u7387\u8d8a\u5927\uff1b\u5012 \u63a5105mm\u7aef\uff08\u93e1\u982d\u8abf\u7126\u74b0\u57280.5m\uff09\u7684\u500d\u7387\u7d041:1\uff1b50mm\u7aef\u7d041.7:1\uff1b28mm\u7aef\u7d042.7:1\uff1b20 mm\u7aef\u7d043.6:1\uff0c\u6a19\u982d50mm\u7d041:1.2\uff08\u500d\u7387\u5c0f\u65bc\u8b8a\u7126\u93e1\u982d\u768450mm\uff09\uff1b\u5012\u63a528mm\u300120 mm\u548c\u6a19\u982d\u6642\u93e1\u982d\u8abf\u7126\u74b0\u57fa\u672c\u5931\u6548\uff1b\u666f\u6df1\u5f88\u5c0f\uff1b\u5de5\u4f5c\u8ddd\u96e2\u8f03\u5c0f\uff1a\u6a19\u982d\u548c105mm\u6642\u7d049cm\uff0c28mm\u6642\u7d044.5cm\uff0c20mm\u6642\u7d043.5cm\uff1b\u9069\u5408\u65bc\u7ffb\u62cd\u6216 \u62cd\u651d\u975c\u7269\uff1b\u66dd\u5149\u88dc\u511f\uff1a\u6bd4\u6b63\u63a5\u6642\u52a0\u4e8c\u6a94\uff1b\u5012\u63a5\u9084\u6709\u4e00\u500b\u597d\u8655\uff1a\u53ea\u8981\u5012\u63a5\u74b0\u8207\u6a5f\u8eab\u662f\u76f8\u540c\u5361\u53e3\uff0c\u6a5f\u8eab\u8207\u93e1\u982d\u53ef\u4ee5\u662f\u4e0d\u540c\u7684\u5361\u53e3\uff0c\u6bd4\u5982\u5ec9\u50f9\u7684\u4fc4\u7f85\u65af\u8d85\u5ee3\u89d2\u93e1\u982d\u53ef\u5012\u63a5\u5728 \u4efb\u4f55\u6a5f\u8eab\u4e0a\uff0c\u7372\u5f97\u6975\u5927\u7684\u500d\u7387\uff0c\u4e0d\u904e\uff0c\u72d7\u982d\u5012\u63a5\u4ee5\u5f8c\u9084\u662f\u72d7\u982d\u54e6\uff01 \u93e1\u982d\u5c0d\u63a5\uff1a\u9023\u63a5\u5728\u4e2d\u3001\u9577\u7126\u93e1\u982d\uff08\u6b64\u93e1\u982d\u63a5\u65bc\u6a5f\u8eab\uff09\u8207\u5ee3\u89d2\u93e1\u982d\u4e4b\u9593\uff0c\u5ee3\u89d2\u93e1\u982d\u662f\u5012\u904e\u4f86\u7684\uff0c\u5c31\u76f8\u7576\u65bc\u4e00\u7247\u77ef\u6b63\u826f\u597d\u7684\u8fd1\u651d\u93e1\u7247\uff1b\u9577\u7126\u7126\u8ddd\u8d8a\u9577\uff0c\u5ee3\u89d2\u7126\u8ddd\u8d8a\u77ed\uff0c\u500d\u7387\u8d8a\u5927\uff0c&nbsp;300mm \u5c0d\u63a5105mm\u7684\u500d\u7387\u7d045:1\uff0c300mm\u5c0d\u63a520mm\u7684\u500d\u7387\u53ef\u905415:1\uff0c\u5df2\u63a5\u8fd1\u986f\u5fae\u651d\u5f71\uff01\u666f\u6df1\u6975\u5c0f\uff08&lt;0.5mm\uff09\uff0c\u62cd\u651d\u6642\u9577\u7126\u93e1\u982d\u7684\u7126\u8ddd\u4e0d\u80fd \u5c0f\u65bc200mm\uff0c\u7126\u8ddd\u5fc5\u9808\u8abf\u5230\u6700\u9577\uff08\u5927\uff09\uff0c\u5ee3\u89d2\u93e1\u982d\u7684\u5149\u5708\u5fc5\u9808\u958b\u5230\u6700\u5927\uff0c\u5426\u5247\u6703\u6709\u6697\u89d2\uff0c\u5de5\u4f5c\u8ddd\u96e2\u5f88\u5c0f\uff0c\u7d043cm\uff1b\u66dd\u5149\uff1a\u53c3\u7167\u9577\u7126\u93e1\u982d\u6e2c\u5149\u5373\u53ef\uff0c\u9019\u4e00\u9ede\u6bd4\u8fd1 \u651d\u63a5\u5708\u548c\u5012\u63a5\u74b0\u90fd\u65b9\u4fbf\uff01 \u4ee5\u4e0a\u62cd\u651d\u6642\u5747\u53d6\u4e0bUV\u93e1\uff0c\u7279\u5225\u662f\u93e1\u982d\u5c0d\u63a5\u6642\uff0c\u4e00\u5b9a\u4e0d\u80fd\u52a0UV\u6216\u5176\u5b83\u6ffe\u93e1\u3002 \u570b\u7522\u7684\u8fd1\u651d\u63a5\u5708\u548c\u5012\u63a5\u74b0\u9084\u6709\u5169\u500b\u65b9\u4fbf\u7684\u512a\u9ede\uff1a1.\u540c\u4e00\u7a2e\u5361\u53e3\u7684\u4ee5\u4e0a\u4e8c\u7a2e\u63a5\u74b0\u7684\u300c\u63a5\u6a5f\u8eab\u90e8\u5206\u300d\u662f\u76f8\u540c\u7684\uff0c\u53ef\u4ee5\u516c\u7528\uff0c\u4e5f\u5c31\u662f\u4f60\u53ea\u8981\u8cb7\u4e00\u5957\u8fd1\u651d\u63a5\u5708\u548c\u534a\u5957\u5012\u63a5\u74b0\uff0c\u5c31\u7b49\u65bc\u6709\u4e86\u5169\u5957\u63a5\u74b0\uff1b2.\u8fd1\u651d\u63a5\u5708\u4e2d\u7684\u7a7a\u5708\uff0c\u4e5f\u53ef\u4ee5\u7528\u5728\u5012\u63a5\u74b0\u4e0a\uff0c\u5012\u63a5\u6642\u758a\u52a0\u7a7a\u5708\uff0c\u93e1\u982d\u5411\u5916\u5ef6\u4f38\uff0c\u500d\u7387\u5c07\u66f4\u5927\uff01 \u9a30\u9f8d28-105\u93e1\u982d\u53c3\u6578\uff1a105mm\u7aef\u5de5\u4f5c\u8ddd\u96e2\u7d0445cm\uff0c\u500d\u7387\u7d041:5.4\u3002 \u9a30\u9f8d70-300\u93e1\u982d\u53c3\u6578\uff1a300mm\u7aef\u5de5\u4f5c\u8ddd\u96e2\u7d04150cm\uff0c\u500d\u7387\u7d041:4\u3002 NIKKOR 50\/1.8D\u93e1\u982d\u53c3\u6578\uff1a\u5de5\u4f5c\u8ddd\u96e2\u7d0440cm\uff0c\u500d\u7387\u7d041:6\u3002 \u9019\u4e09\u8005\u7684\u5171\u540c\u9ede\u53ea\u662f\uff1a\u90fd\u662f\u62cd\u5fae\u8ddd\uff1b\u5176\u5be6\u5b83\u5011\u7684\u7d50\u69cb\u3001\u9069\u7528\u6027\u3001\u4f7f\u7528\u65b9\u6cd5\u3001\u62cd\u651d\u6548\u679c\u90fd\u6709\u5f88\u5927\u7684\u4e0d\u540c\uff0c\u5404\u6709\u81ea\u5df1\u7684\u512a\u9ede\u3001\u7f3a\u9ede\u548c\u7279\u9ede\u3002\u60a8\u4e0d\u59a8\u4f9d\u64da\u81ea\u5df1\u7684\u8208\u8da3\u3001\u611b\u597d\u548c\u73fe\u6709\u7684\u6a5f\u8eab\u3001\u93e1\u982d\u4f86\u9078\u64c7\u3002 \u8fd1\u62cd\u65b9\u9762\uff0c\u56e0\u70ba200mm f\/4\u768452mm\u53e3\u5f91\uff0c\u5b83\u53ef\u4ee5\u4f7f\u7528Nikon\u7684#3T\uff08+1.5\uff09\u8207#4T\uff08+2.9\uff09\u5169\u6b3e\u8fd1\u62cd\u93e1\u3002\u56e0\u70ba\u5c48\u5149\u5ea6\u70ba+d\u8fd1\u62cd\u93e1\u7684\u7126\u8ddd\u662f1000\/d\uff0c\u6240\u4ee5#3T\u8207#4T\u7684\u7126\u8ddd\u5206\u5225\u662f1000\/1.5\u82071000\/2.9\u3002\u5982\u679c\u76f8\u6a5f\u4e0a\u93e1\u982d\u7126\u8ddd\u70baF\u3001\u63a5\u5728\u8a72\u93e1\u982d\u524d\u65b9\u900f\u93e1\u7684\u7126\u8ddd\u70baf\uff0c\u7406\u8ad6\u4e0a\u7684\u653e\u5927\u7387\u70baM&nbsp;=&nbsp;F\/f\uff1b\u5982\u679c\u628a#3T\u8207#4T\u88dd\u5728200mm f\/4\u524d\u65b9\uff0c\u7406\u8ad6\u4e0a\u7684\u653e\u5927\u7387\u5c31\u5206\u5225\u662f0.3= 200\/(1000\/1.5)\u82070.58 = 200\/(1000\/2.9)\uff0c\u4e0d\u904e\u5be6\u969b\u653e\u5927\u7387\u6703\u56e0\u70ba\u93e1\u982d\u7684\u5149\u5b78\u7d50\u69cb\u800c\u6709\u4e9b\u5dee\u7570\u3002 &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u9019\u500b200mm f\/4\u662f\u5012\u63a5\uff08lens reversal\uff09\u6280\u5de7\u5e38\u7528\u7684\u93e1\u982d\u3002\u628a24mm\u300150mm\u3001\u8207100mm\u7684\u93e1\u982d\u88dd\u5728200mm\u524d\u65b9\uff08\u628a\u5b83\u5011\u770b\u6210\u662f\u5c48\u5149\u5ea6\u5206\u5225\u662f+41.7 = 1000\/24\u3001+20 = 1000\/50\u3001\u8207+10 = 1000\/100\u7684\u8fd1\u62cd\u93e1\u4f7f\u7528\uff09\uff0c\u5f97\u4f86\u7684\u653e\u5927\u7387\u5c31\u5206\u5225\u662f8.3 = 200\/24\u30014 = 200\/50\u3001\u82072 = 200\/100\uff0c\u90fd\u5927\u904e1\uff1a1\u3002\u5728\u5f80\u65e5\u6c92\u67091\uff1a1\u5fae\u8ddd\u93e1\u6642\uff0c\u9019\u500b\u65b9\u5f0f\u662f\u5f88\u6d41\u884c\u3001\u7528\u4f86\u63d0\u9ad8\u653e\u5927\u7387\u7684\u624b\u6cd5\u3002\u4e0b\u9762\u5de6\u908a\u662f\u628aNikon AF 24mm f\/2.8 D\u5012\u63a5\u5728200mm f\/4\u524d\u65b9\u7684\u6a23\u5b50\uff0c\u653e\u5927\u7387\u70ba8.3X\u3002\u5728\u7406\u8ad6\u4e0a\uff0c\u6b63\u63a5\u8207\u5012\u63a5\u7684\u6548\u679c\u76f8\u540c\uff0c\u4f46\u5be6\u969b\u4e0a\u56e0\u70ba\u93e1\u982d\u7684\u5149\u5b78\u8a2d\u8a08\u8207\u63a5\u74b0\u7b49\u56e0\u7d20\uff0c\u5012\u63a5\u6bd4\u8f03\u5bb9\u6613\u9054\u5230\u8f03\u597d\u7684\u6548\u679c\u3002 &nbsp; \u53e6\u4e00\u500b\u8fd1\u62cd\u624b\u6cd5\u662f\u7528\u5ef6\u4f38\u7b52\uff08extension tube\u3001\u6216\u7a31\u63a5\u5beb\u74b0\uff09\uff1b\u4e00\u822c\u800c\u8a00\uff0c\u5982\u679c\u5ef6\u4f38\u7b52\u7684\u7e3d\u9577\u662fK\uff0c\u800c\u4f7f\u7528\u7684\u93e1\u982d\u7126\u8ddd\u70baF\uff0c\u65bc\u662f\u7406\u8ad6\u653e\u5927\u7387\u70baM&nbsp;=&nbsp;K\/F\u3002\u56e0\u70ba200mm f\/4\u7684\u7126\u8ddd\u662f200mm\uff0c\u5ef6\u4f38\u7b52\u7684\u9577\u5ea6\u4e5f\u5f97\u5728200mm\u4e0a\u4e0b\u624d\u80fd\u505a\u52301\uff1a1\uff0c\u6240\u4ee5\u7528\u5ef6\u4f38\u7b52\u63d0\u9ad8\u653e\u5927\u7387\u4e26\u4e0d\u5341\u5206\u5be6\u969b\u3002\u524d\u9762\u7167\u7247\u4e2d\u53f3\u908a\u90a3\u4e00\u5f35\u7528\u4e86\u4e09\u500b\u5ef6\u4f38\u7b52\u3001\u7e3d\u9577\u70ba68mm\uff0c\u6240\u4ee5\u653e\u5927\u7387\u70baM&nbsp;= [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[19,20],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/32"}],"collection":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=32"}],"version-history":[{"count":0,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/32\/revisions"}],"wp:attachment":[{"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chan.nds.hk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}