g1smd - 7:27 pm on Feb 9, 2012 (gmt 0)
In Google Webmastertools in the Instant Previews section of labs:
Do these images look different?
There are several reasons why your batch Instant Preview may look different from your on-demand Instant Preview. robots.txt restrictions and fetch failures are a common cause. (To get a complete report of what Googlebot was able to fetch from this page, use Fetch as Googlebot.)
The three images above that text are labelled:
*On-Demand Desktop Search Instant Preview
*Mobile Search Instant Preview
*Pre-render Desktop Search Instant Preview
So, which one of the last two is the "batch Instant Preview" image?