Aye, you’re probably right John, but I’m a terrible optimist

Must be in good nick with lowish actuations.

Here's one example of many where the issue is evident on the two trees at each side of the frame.

Many thanks to you all for taking the time to post some very informitive replies which have convinced me that the issue is very well controlled on the K1.

In hindsight i may have been rash in getting rid of the K3 and moving elsewhere especially as i had a plethoria of old K series lenses which i imagine will work a treat with the K1. However the raging red mist had taken over after reading this review

http://www.techradar.com/reviews/cameras-and-camcorders/cameras/digital-slrs-hyb...

Thanks for your reply John but I'd only ever encountered it once with the k5 using a m28mm f3.5 and never with the k200 also using a 16-45mm. The k3 displayed it using the 16-45 which I replaced with the 16-85 and it was worse. Reasearch also lead me to conclude that it was indeed the sensor and not the well worn theory that the optics are at fault.

Some of you will realise that i've not been on the forum for some time. The reason being that i left the Pentax fold after a 38 year relationship and am reasonably happy where i am though i'd like to return via the K1.
My last and the camels back breaker was the K3's sensor which suffered terribly from the purple menace. No it was not the lenses, which were the same i'd used on the K5 and images taken with my present camera confirm this. So does the K1 suffer from such an affliction?

PM replied to Bob.

That's the 55-300mm lens also sold leaving the K3 which i will drop the price to a ridiculously low £380

Price reduction on the 55-300mm to £230

As stated it's new and was only taken out of the box to take the image

16-85mm. Now sold.

Many thanks