[davidmanze]

I have never, ever, had the same issue with red cars. They did not pose such a problem as certain red flowers (mainly roses) and certain blue/violet/purple flowers. It is nice that the IR/UV gets dismissed by Popo, but it is a real "issue" with flowers.

  As I've stated before I was already suffering the red problem with Pentax only turning to magenta, so when I first bought the Nikon D7100 my first tests were AF and reds in full Mediterranean summer sunshine.

 A "Harley Rally" provided a nice selection of bright red shinny bikes, arriving home I put the pointer on the red bikes and "damn", saturated reds, they looked better than Pentax's but nonetheless.

 

  That's how long it took to find the problem although I admit that I was looking out for it.

 

 

   I don't know what part of the world you live in Brightcolours? maybe that plays a role. I remember in a thread on Dpreview where I said I had to underexpose white birds by a full one stop and you sounded surprised, maybe it's our fierce midday sun here, and yes only Englishmen and mad dogs go out in it!