Cheapest Canon EF telephoto to 300mm without IS, basic reach at essentially zero used cost.
The Canon EF 90-300mm f/4.5-5.6 is a budget telephoto zoom for the Canon EF mount covering portrait through long telephoto without stabilisation. The 90-300mm range provides significant reach at the most affordable Canon telephoto pricing.
The 90-300mm covers from portrait through to genuine long telephoto with Canon EF autofocus. The lens provides basic telephoto reach for casual sports and wildlife photography at the lowest possible Canon investment.
Build quality is basic Canon consumer with lightweight plastic construction. The lack of IS limits handheld telephoto capability, but the Canon EF compatibility provides access to the full Canon system.
The EF 90-300mm offers the cheapest Canon telephoto reach at essentially zero used cost. The missing IS is a significant limitation, but the 300mm reach provides genuine telephoto capability for static or well-lit subjects.