The ALLOC function does the heavy lifting, but that is inevitable: Only by walking the entire MCB chain can DOS coalesce all eligible memory and ensure that the largest free block is found. This means that calling the ALLOC function can be somewhat expensive if the MCB chain is long. In practice, there are unlikely to be more than a few dozen MCBs, even in a heavily loaded system.
The telephoto camera alone is also technically interesting in a few ways. It offers continual optical zoom across the 75-100mm range without in-sensor cropping. This means the lenses physically move to deliver lossless zoom across a range of distances, without jarring leaps between camera sensors and crops. This doesn’t run across the full gamut, but it does roughly cover the 3-4x optical zoom range, which is often used in portrait photography.
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Photograph: Julian Chokkattu
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