Two images attached. 1st one is straight out of the camera (RAW conversion) with no post processing at all. The 2nd pic was post processed in Lightroom. Whilst not the sharpest images, for what you pay for a lense with a focal length in this range, It's cheap. You can't expect champagne results on a beer budget. LOL.
I've never had zoom creeping issues, but I probably wasn't using this lens in the same way as the post above mine^. I imagine that it could definitely happen if you were using this lens for celestial type photography, but a lock would be a good idea, but in the meantime, you'd have to improvise if creeping was an issue. It is a mammoth size. Many lenses in this focal length are quite cumbersome.
In terms of focusing, like my previous post, I learnt to overcome some of the issues with this lens, but I use it everyday. If I only had this lens for 2 weeks (was it used everyday in those 2 weeks?), then I'd probably be frustrated with it too.
What are the alternatives for PENTAX/RICOH at this price range and this focal length? Any suggestions?
ISO 400 / f6.3 / 1/1000sec @ 500mm (Pentax K5-ii)