Q about Low and High ISO settings on D5000

[DiRt DeViL]

Just got a D5000 kit and took it out last night for some night shooting, it's very different to the XTi that I used to use so bear with me with the newb questions.

During last night shooting I tried to use the High (Hi.03, .07 and 1) ISO and noticed that my pics came out with B/W areas; is it supposed to do that?



Also it has a Low (Lo.03, .07 and 1) and wonder if it will do the same.

[Franglais]

Where do you see B/W (black and white?) areas?

[DiRt DeViL]

The bottom of the pic where the lamps are, the building is yellow.

Same happened here

[Franglais]

No it's not supposed to turn coloured objects black-and-white. It desaturates dark areas to make coloured noise less obvious but here the "yellow" areas are bright.

My guess is that you are on auto white balance and the camera has selected a white balnce which is yellowish therefore the building appears to be white.

Try shooting the same scene and set some other white balance and see if the effect is different.