When you're shopping for camera lenses, the telephoto zoom decision often comes down to how much reach you need and how much manual control you're willing to handle. These two Canon-mount zooms take opposite paths. The Canon EF 70-300mm f/4-5.6 IS USM is an open-box telephoto zoom with autofocus and image stabilization. The EF/EF-S 420-800mm F8.3 is a manual-focus super-telephoto zoom that offers far more reach at a much lower listed price.
Quick Verdict
Choose the Canon EF 70-300mm IS USM if you want autofocus, stabilization, and a versatile everyday zoom range. Choose the EF/EF-S 420-800mm F8.3 if your priority is reaching distant subjects and you are comfortable shooting with manual focus and exposure.
Listed-Price and Feature Snapshot
| Lens | Listed Price | Focus Type | Focal Length Range | Price Bar |
|---|---|---|---|---|
| Canon EF 70-300mm f/4-5.6 IS USM | USD 255.00 | Auto & Manual | 70-300mm | |
| EF/EF-S 420-800mm F8.3 (MF) | USD 86.11 | Manual Focus | 420-800mm |
Where Each Lens Wins
- Canon EF 70-300mm IS USM: This lens brings autofocus plus manual focus, and the IS in the name points to built-in stabilization. Its range is the more practical everyday telephoto zone, and the automatic focus makes it easier to react to moving subjects.
- EF/EF-S 420-800mm F8.3: This lens is all about distance. It starts in super-telephoto territory and keeps going, making faraway subjects appear dramatically closer. It also relies completely on manual operation, which gives you hands-on control if you prefer that style.
Product Notes
Canon EF 70-300mm f/4-5.6 IS USM Telephoto Zoom Lens
This open-box Canon zoom is the more convenient pick if you want one lens for everyday telephoto shooting. Its listed attributes include auto and manual focus, a Canon EF mount, and a 58mm compatible filter size. The IS in the product name signals image stabilization, which helps when you are shooting near the long end. The trade-off is reach: it stops well short of the super-telephoto option, and its listed price is the higher of the two. Because the condition is listed as open box, you will be getting a lens that has been opened rather than one still in a factory-sealed package. For many shooters, that is a reasonable trade for the convenience and autofocus this zoom offers.
EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens (MF)
This is a manual-focus super-telephoto zoom, and it does not try to be an all-around lens. It starts in the long range and extends much farther, bringing distant subjects like wildlife, moonscapes, or stadium action closer. The f/8.3 aperture and manual exposure control mean you need to work in M mode and set focus by hand. The product description also notes that the camera may only display F00 or F-- because the lens relies on physical controls. In exchange, you get a new black lens with a 62mm filter thread and a listed price that keeps a noticeable amount of cash in your pocket. This is a specialized tool for shooters who want maximum reach at the lower listed price.
Final Choice by Use Case
If you want autofocus, image stabilization, and a versatile zoom for everyday telephoto shooting, the Canon EF 70-300mm IS USM is the stronger choice. If your subject is far away and you are happy to focus manually, the EF/EF-S 420-800mm F8.3 gives you the longer reach and the lower listed price.
