Tamron 28-300VC lens tends to exhibit lens creep as it ages. An effective, inexpensive, and aesthetic fix is a customised adult size rubber wrist band ordered from this website:
http://www.wristbands-with-a-message.comThe advantage of the flat wide (7/16" or 12cm) band is that you can adjust the friction applied by adjusting the position of the wristband, which varies the band's overlap between the zoom ring and the fixed lens body. The band won't move or roll out of position.
Thanks to Kim Letkeman for the suggestion.
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