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No site has much information about those discontinued camera models.
I'd take all the old camera info and build a "brand x camera history" site, (no ads, no links to your ecommerce site, no outbound links at all).
Can I ask if this is something that you have done yourself and seen good results?
I almost always build "feeder sites" for ecommerce sites...
...blogs, directories, galleries, whatever info I have or can build that's not directly related to product(s) for sale or the selling process goes onto a separate site --- sometimes 2-3 of them.
Doesn't that go against conventional wisdom? Don't most people suggest that you put the supplementary content ON THE SAME DOMAIN as the ecommerce site?
If it's good, original content that can add to the ecommerce site's overall user exerpience, that's another way to go.