Can being found for images hurt your bounce rate?

[Oimachi2]

I've allowed Google to crawl them through my robot.txt file and now get tons of "images" traffic...

My worry is this:

Some of the keywords leading to the images is irrelevant, just G doing thing wrong as usual, nothing I did.

Even when the keywords and searches are related, the bounce rate is high...I find images traffic of very poor quality. Only once a human contacted me and asked to use one for a school project.

And no...these are not spam images, they are landscapes of Vancouver, Toronto and other Canadian cities. No link building, only descriptive Alt tags.

Should I dissalow G to see my images again?

[tedster]

Certainly Image Search results in a lot of "one hit wonders" - and therefore a high bounce rate. But Image Search isn't the regular organic search and Google certainly knows the average stats for image traffic.

I would have no concern about this - especially if you're looking at image traffic to be the cause of a Panda, Penguin or penalty problem. I'm certain that cannot be the case.