Problem with smc DA 50-200mm f/4.0-5.6 ED WR

Hi, I recently purchased second hand a DA 50-200mm. Using this on a *ist DS I find that (in Av mode) the aperture is not displayed and the autofocus doesn't work - anyone else with experience of this? Unless there's a fairly straightforward fix I'll have to return it.

Try cleaning the contacts on the camera mount and the lens mount, using a soft, dry cloth to remove any traces of dirt or grease.

Then remount the lens, making sure it seats positively with a click.

Also, check the AF lever on the camera is firmly set to AF and not caught half way between AF and MF.

There is little else to be done, so if that doesn't work it may well need returning.

---

Best regards, John

Hi, still no joy after cleaning the contacts .
Regards

I have the lens and my boy has a istDS... I'll check it works...

---

........................................................................
Digital:
Pentax K5- Vivitar 19mm 3.8; FA28mm f2.8; FA35mm f2; FA50mm f1.4; D-Xenon 100mm macro f2.8; DA50-200mm WR...
Flash:
Yongnuo YN-560; Vivitar 285HV; Cactus V4 triggers...
Film:
Pentax-MX & M50mm f1.4; Spottie & 55mm f1.8; MG & M40mm 2.8...

http://www.flickr.com/photos/daveholmesphotos/