Tamron has announced a new version of its popular 18-250 superzoom with an in-built focus motor evidently aimed at users of Nikon's D40 and D40x DSLRs. These two cameras lack legacy lens support in the form of a mechanical focus coupling - an omission widely criticized due to the reduced range of available lenses. Other specs appear to be unchanged from the existing version. Due to go on sale in Japan on December 13th, pricing and worldwide availability are yet to be announced.

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