In the classic photography book Understanding Exposure by Bryan Peterson, on page 113 of the fourth edition of the book, the author writes that:
[...] in addition to being confused by white and black, the meter [on a camera] can be confused by backlight and contrast.
My question is, what does the author mean here by the meter being confused by contrast? I'm only asking because I know of only two types of contrast (well, three if you count compositional contrast): tonal contrast and color contrast.
In the next paragraph, on the same page, the author suggests taking a meter reading of the blue sky, on sunny days, when dealing with winter landscapes (shooting whites), black Labrador portraits (shooting blacks), bright yellow flower close-ups (color contrast?), and fields of deep purple lavender (color contrast?).
By mentioning yellow flower close-ups and fields of deep purple lavender, the author seems to be suggesting color contrast can certainly confuse the meter on a camera, but I'd like to double-check with this website, just to be sure.
And, what about tonal contrast? Can a meter also be confused by tonal contrast?