“Why is the Sony 100-400, f/4.5-5.6 more expensive than this lens? A lot more expensive.”

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• Wider F-stop (4.5) means bigger lens opening, which means can shoot in lower light level. Also means glass lenses are bigger so costs more than the 600 mm lens. I use 600 for outside sports as well as bird pics that are well lit, and needed longer range than the 400 offered.

  Answered by JimmyDfromTN 4 years ago

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• Cause of the lens quality. Gmaster lens are more pricey than other Sony lens.

  Answered by Queso 4 years ago

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