Does anyone know how to do this for Canon digitals? I searched the internet and only found one article, but the gentleman says to use a flashlight and look in the film compartment. I think the article was old.

I emailed Canon and of course they said that this information was not available to the public.

I recently bought a 50D and I am not happy with the noise at ISO100. I was looking at user reviews, on the Canon site and elsewhere, and it appears that when the camera first came out, everyone was complaining in the reviews about the noise(2008). But lately (2009) no one has posted cons about the noise. I'm thinking I may have gotten an early build model. Will return to B&H and would like to request a later build model, but I would like to know what I am talking about first.