Numerous users over on the Apple support forum are complaining of a significant drop in battery life after upgrading to iSO 6.1.

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The camera also includes features that should appease more-advanced users, such as a dedicated mode dial, a versatile lens ring control, a top ISO sensitivity of 25, 600 and a 6 frames-per-second burst mode.

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One of the most intriguing suggestions, from iOS developer Patrick McCarron, is that 6 January 2013 marks the last day of the last ISO week of 2012.

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