Grahame wrote:
But the exif shows (assuming correct) that the images were shot at 3.27 pm?
Why would you wait a year to take a comparison? The light is hardly changes in a few days, surely?
To see that 6PM (ish) during the summer is similar light intensity to 3:30PM (ish) in November. The light intensity at noon on July 1 is a LOT brighter than at 6PM on July 1. Your eyes may not detect this, but, the camera will. Or, get a light meter and measure it at various times of day. Hopefully those numbers will show you what is happening and why sunny 16 does not work 4 months later.