Clunking Lens
I have a Sigma DC 17-70mm f2.8-4 macro HSM lens (about six or seven years old) which I use with a Nikon 7100 body mainly for landscapes. The lens has started to make a clunking noise when the camera is switched on and the zoom is twisted at about 23mm. The image viewed through both the viewfinder and LV jumps at that point. This does not happen if the camera is switched off but happens if autofocus is on or off and if OS is on or off. The pictures taken since this started to happen seem OK but I am worried that the lens will let me down. I have tried it on a different Nikon body with the same results
I cannot find anything about this on Google and am thinking of contacting H. Lehmann of Stoke-on-Trent to see if it is worth repairing but any comments or ideas before I do this would be welcome
I cannot find anything about this on Google and am thinking of contacting H. Lehmann of Stoke-on-Trent to see if it is worth repairing but any comments or ideas before I do this would be welcome
Hi spickles. I have exactly the same issue on my lens (same spec, but may be a couple of years older than yours). Image and something to do with the optics jumps/judders as I twist between 17 - 24mm.
Just wondering if you managed to find out what the issue is?
Just wondering if you managed to find out what the issue is?
Hi TyroneShoelaces. Yes thats the same as mine. I spoke to H Lehmann who do camera and lens repairs. They thought a helical spring inside had a dent in it causing this and said a repair would be around £170. They suggested if the photographs taken were OK I should just live with it. The only doubt I have is that it only does this when the camera is turned on so I am not sure how this can be a mechanical issue. However I will continue to use it as it is and see what happens
That's my thought as well: if the problem only manifests itself when powered on, it can't be purely mechanical. Good to know what the estimated cost would be though - I bought my lens second hand and only paid around that price for it. So I think I'll do the same and just live with it for now. I don't think it's getting worse, but if it starts to look as if it is, then perhaps I'll reconsider.
Thanks very much for the response.
Thanks very much for the response.
