Quick Summary
The BENOISON 420-800mm telephoto lens is a manual-focus lens for Canon DSLR cameras with an EF/EF-S mount. It has a focal length of 420-800mm, an aperture of F/8.3-16, and a 62 mm filter size. The lens is a full-frame design and does not have electronic contacts or an autofocus motor.
This lens is aimed at buyers who want a long telephoto option and are happy to focus manually. Check the camera mount carefully, because it is listed for Canon EOS DSLR bodies with EF or EF-S compatibility and is not for M-series or R-series mirrorless cameras.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | BENOISON. Useful for matching the exact model. |
| Product type | Manual focus telephoto lens. This sets the expected handling and focusing method. |
| Focal length | 420-800mm. Compare this range with the framing you want to achieve. |
| Aperture | F/8.3-16, with F8.3 at 420mm and F16 at 800mm. |
| Mount | EF/EF-S mount for Canon DSLR cameras. |
| Filter size | 62 mm. Check that any filter or accessory matches this size. |
| Focus type | Manual focus only. You need to focus by hand. |
| Compatibility note | Listed as not for Canon M-series or R-series mirrorless cameras. |
What to Compare Before Buying
- Camera mount: This lens is for Canon EF/EF-S DSLR bodies. Confirm your camera uses that mount.
- Focus method: It is manual focus only, so compare this with the way you like to work.
- Focal length: The 420-800mm range is the main decision point if you need a long telephoto lens.
- Aperture: The lens has F/8.3-16. Check whether that suits the exposure approach you plan to use.
- Filter size: The stated 62 mm size matters if you want to add compatible filters or accessories.
Compatibility, Size and Fit
This lens is listed for Canon DSLR cameras with EF or EF-S mounts. It is described as compatible with Canon EOS-1D, EOS-5D, EOS-6D, EOS-7D, EOS-10D to 90D series, Rebel SL3, SL2, SL1, and several Kiss series and other DSLR bodies.
It is not for Canon M-series or R-series mirrorless cameras. If your camera is one of those systems, you will need a different lens mount.
Before You Decide
Confirm that your camera uses Canon EF or EF-S mounting before choosing this lens. Check that manual focus suits your shooting style, and make sure the 420-800mm focal length and F/8.3-16 aperture match the kind of images you want to take. If you use filters or accessories, also check the 62 mm size.






