2010年5月25日——随着2010年碳博览会本周在德国科隆开幕，而且新的全球气候变化协议仍悬而未决，碳交易商们将面临不确定的未来和较低的碳价。

May 25, 2010 - As carbon Expo 2010 opens this week in Cologne, Germany, carbon traders face an uncertain future and lower prices, with a new global climate change agreement still up in the air.

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该镜头的首次亮相是在2006年举办的德国科隆世界影像博览会（Photokina）上，这支“怪兽级”的镜头是为“对远距离拍摄野生动物具有极高要求和特殊兴趣的客户”设计并制造的。

Announced and exhibited at the 2006 Photokina, this monster was designed and produced for a "customer with very high demands and a special interest in long distance wildlife photography."

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