Are the plans for a comparison feature? This was invaluable when trying to figure out what changed in various versions of the same camera family.
https://www.productchart.com/cameras
Select "highlight" on the first camera you want to compare and then when you hover over the second, select "Compare to ..."
Does that work for you?
We have manually researched the product data for over 45,000 products. At the moment we only show currently popular cameras on the chart. But if there is demand, I could add a search for older cameras so those can be compared as well.