Camera Labs

I just received a TAMRON 18-270MM lens for my Canon Rebel XSi.

The lens will only zoom (by rotating the ring from the wide-angle end to about 100mm where it will not extend further toward the zoom (270 mm) end of the range. However, if the extended lens tube itself is rotated, it will continue to extend to its full extent (and back again with no problem).

So, when zooming with the knurled ring, it hangs at ~100mm and can only be extended from there by turning the lens tube itself. And it can be continuously and smoothly extended from 18 => 270 (and back again) by during the lens tube itself (but not with the knurled ring).

The lens is clearly defective, but while I wait for a response from the eBay seller from whom I purchased it, I thought I'd just drop a post over here to see if there is any "home remedy" for this issue.

Thanks.

The lens is known to be stiff in the middle part of the zoom. Might be tight if pointing upwards, but should be ok horizontal or pointing downwards.

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.

I think I had read something about that. But this is beyond tight. Once it starts to hang, if you continue to twist the ring, it (the ring) will eventually free itself, but the lens itself doesn't move at all).