The image functionality is pretty underwhelming.
Some things I tried that it failed at:
* Simple "spot the difference" a young child could do
* Counting chess pieces on a board or coins in a mario screenshot
* Describing a photo of a car on a road
* Evaluating a graph of y=x and one of y=x^2
* Explaining a meme image (said it can't do anything with images of people)
* Taking a screenshot & giving HTML for it (gave random HTML unrelated to image)
* Taking an image and converting to SVG (gave random SVG unrelated to image)
* Describing a photo of a car (it was parked on a road, Bard said it was driving in front of a brick wall)
It was quite good at OCR though even for images that are pretty tough for other models (eg serial numbers on industrial parts).