Hi, I'm not aware of any spidering technique that will provide you with a screenshot just by clicking on an image.

You can certainly get a screenshot using most solutions, you might need to scroll to the image/resource then take the screen shot. As others have said this is really a matter for whatever you use to control your browser. You may be using Perl to do this, for example I use Selenium::Remote::Driver for this with headless Firefox, eventually taking the screenshot with:

$robot->capture_screenshot('/path/to/file.png');
[download]

But you are really asking about the Selenium part of that.