Whilst standing by the roadside with his medium format camera in hand, a British Army patrol approached him and asked what he was doing, whilst making it clear he should take no more pictures.

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The digital format is a perfect medium for this kind of instructional book, making it easy to show people how to do something rather trying to describe how to do it.

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The small screen format and variable delivery speeds force us to think differently about the medium.

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It's the S-System, the company's update to its pro-series medium format offering.

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Unlike VHS, neither the Blu-ray nor HD DVD format is a recordable medium at least, not in their present guise.

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Beck (as the exhibit demonstrates) was also a keen collector of outdoor photography, including work by his American contemporary William Henry Jackson and, most impressively, by Vittorio Sella, a younger Italian climber-photographer whose large-format work has rarely been equaled by anyone in the medium.

WSJ: Photographic Balancing Acts | Swiss Alpine Museum | He Cut a Fresh Path in Mountain Photography | By Michael J. Ybarra