Can I see which fields are causing customer drop-offs on my form?

Yes.

The conversion funnels include a standard report that will show you both the page where customers abandon your site (e.g. the shopping cart or basket) and the specific field causing the drop-off.

You’ll also be able to see all the sessions that dropped-off on the particular field in question in the SessionCam console.

You can find more information on this under the help section for Funnels.