Re. edit of 9 April 2010. Assistance with the articles is very much appreciated, especially regarding the British English. However, separating the unit from the value using a space is not altogether necessary or even favoured in technical literature, although possibly the most conventional elsewhere. Please refer to the camera lenses themselves, or perhaps one of Paul-Henry van Hasbroeck's books on cameras published by Sotheby's or those written on these subjects by Ivor Matanle. Whatever is conventionally correct is irrelevant, since the rule in this context is to repeat what is already written. Please allow the reintroduction of the established form. Jan von Erpecom 14:55, 10 April 2010 (UTC)

Re. edit by UtherSRG at 03:08, 14 April 2010. I appreciate the effort to put things right, but with respect; I think the layout presents itself more readable without breaking up the text by horizontal lines. I am aware of the "Wikification" effort, but an article as short as this one does not in my opinion benefit from it. Please forgive me for reverting this edit. Jan von Erpecom 19:11, 1 May 2010 (UTC)