I suppose it really depends on how bad your winters are. The all-season tires that come on the Camry should be "decent", but if you live in the back-woods or other area where the snowfall could be heavy, dedicated snow tires may be good. I run a full set of Dunlop WinterSport M3 snow tiress on my S2000 in the winter and they are awesome. Check them out on TireRack's website. Here is the link for the comparison of snow tires:
http://tinyurl.com/5vtqf