The DA18-250mm is one of the best all-around zoom lens across all brands incl. Canikon, Oly and co. Manufactured by Tamron, the lens was sold as Tamron 18-250mm (K-mount) and Pentax DA18-250mm. Like all zoom lenses, the 18-250mm is a compromise across the range of focal length and a good one. The DA/Tamron 18-250mm is well-liked by many Pentaxians including professionals. The DA18-250mm/Tammy 18-250mm is no longer manufactured but is readily available 2nd hand in the PF Market place, at Keh and Adorama (Used) about US$350-450. It is a better option IMHO. The two known weaknesses of the DA/Tamron 18-250mm are the low light conditions and some zoom creep. Let us talk about zoom creep. The DA/Tamron 18-250mm has a manual lock to 'lock' the zoom at 18mm. At other focal lengthes, some zoom creep might appear, especially if you are bushwalking with the camera and lens dangling from the strap around your neck. How to stop the creep?
A PF member showed a nice trick that I simply repeat below. (I do not claim to have discovered the trick. I simply aim to show the solution and to repeat my own experience for the benefits fo others.)
The simplest and most effective way to stop zoom creep on the 18-250mm is to use a rubber wristband: e.g., you can buy these for $2 at charities. These rubber wristbands are the perfect size
Place the rubber wristband around the lens, on the camera side (see photo below). The friction of the rubberband along the zoom ring is enough to strop completely the creep. It is very effective and long lasting. The cost is minimum and the outcome an asset if you disklke creep. A small point: you cannot use the zoom lock but you really do not need it. Lastly do take care that the rubber band is no wider than the distance between the zom ring and the camera.
(Click on thumbnail to see the full-size photograph - the black wristband blends in with the lens colour, but a more colourful rubberband may be used as well)
I hope that the 'trick' will assist the many PF members and non-members who worry about zoom creep. A small problem IMO and a simple solution....