When I apply the 'ToFacets("facets/CameraFacets")' extension on the 'IQueryable' that comes from my query, I find the count on one of the 'IEnumerable' collections against a facet in the dictionary is 1024. I know for sure there are more, but how do I retrieve them? Will increasing the safe limit automatically give me all values, also is there another way of doing this without having to increase that limit?
Yes if you change the safe limit it will pull in more facets, take a look at the HandleTermsFacet(..) in the code.
However, I wouldn't recommend it. It's a perf issue because 1024 facets means you are doing 1024 seperate queries.
If you need to deal with this many facets, you are better off using a Map/Reduce index, also see this blog post