Hefty! - You are a star! The digital filter was set to some weird and wonderful setting. I've just turned it off and it working beautifully!

Thanks again to you all for taking the time to post and try to help me

Wow! What a wonderful response!! Thank so much - I've been made to feel incredibly welcome.

I'm in a hurry now but will methodically go through the replies tomorrow and will report back. I'll also post an example for you. My poor chestnut horse looks like my daughter has dappled him in red with a felt tip

I got a Pentax K-m for christmas but all of the photos I take have strong red hues to them, but no blue or green so the photo looks like its black and white with strong red highlights. I'm really very new to all of this and have no idea where to start with trying to rectify this problem.

Many thanks in advance!

Andrea