Re: Exposure feedback, are these overexposed? A Nikon 35mm camera on full auto.
I agree, it would be good to see the negatives (though I think color negs are trickier to "read" than B&W). The first two shots look a little hot to me; the rest look good, and the question is, is this down to scanning (which has to make its own exposure based on average density of the neg) or the camera?
I have a Nikon N8008, which also has an early matrix metering system, and I've been amazed at how well it does in tricky situattions:
Nikon N8008, Ilford FP4
Nikon N8008, Ilford FP4
That said, if it's going to get it wrong, it does seem to blow out the highlights a bit (but these could be recovered with some burning-in, either digitally or in the darkroom). This photo could be a stop or two darker and would have looked more like what I saw, but I think it was trying to get those dark bricks to middle gray:
Nikon N8008, Ilford FP4
Keep in mind that film has less dynamic range than digital, so in a situation with a lot of contrast, something has to give. Your 3rd photo, wide-angle landscape with shadows and a lot of sky, is an example of that; bit dark in the shadows and hot in the sky, but I think the camera did a good job of granting more importance to the lower section of the photo.
That said, in your first photo, I have to wonder if the camera got it right but the scanner tried to bring up the darker green of the trees to be closer to middle gray -- and that would explain the blown-out tree trunk. For the second photo, there's a lot of range between light and shadow, and that'd be a tricky one for the N90 as well as the film itself.
Aaron