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File properties show Canon EOS-1Ds Mark II with a focal length of 65 mm.

The 65 mm lens is not really a brand thing rather, a ratio. The 65 mm lens is a 'larger than life' lens, id est, 2:1-to-5:1. Most macro lenses are life size, id est, 1:1 ratio. None of us really want life size but the lens manufacturers do nothing to give us superb larger than life lenses. The 65 mm is very nice but lacks image stabilization and autofocus. A few 2:1+ lenses exist pre- and post 65mm but the Canon is better than all of the others. I've asked many times for a modern 2:1+ lens but nothing yet. I feel cheated because we have to circumvent this issue with extension tubes, microscope objectives, reverse lenses and other tactics. Ridiculous!