Manufacturer | BENOISON |
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Place of Business | BENOISON |
Item model number | B-420-800 |
Product Dimensions | 24 x 6.7 x 6.7 cm; 950 g |
ASIN | B0CPM399PQ |
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Telephoto Lens 420-800mm - EF Lenses for Canon, Manual Telephoto Zoom Lens for Canon Rebel T8i T7i T7 T6 T6s T6i T3i T2i SL3 SL2 90D 80D 77D 4000D,1DX 5D 6D Mark II/III/IV DSLR
Purchase options and add-ons
Brand | BENOISON |
Focal length description | 420-800mm |
Lens type | Telephoto |
Compatible mountings | Canon EF, Canon EF-S |
Camera lens description | The BENOISON Telephoto Lens is a versatile manual zoom lens, covering a focal length range of 420-800mm. It is compatible with a wide array of Canon DSLR models, making it an ideal choice for photography enthusiasts and professionals seeking a telephoto lens for capturing distant subjects or wildlife. See more |
About this item
- 【Setting】: This is a FULL MANUAL lens, NO Electronic Contacts, your camera will not detect the lens when mounted, that's why we can't press the shutter. Tips to use our Manual Lens: Set the mode dial to Manual (MF).
- 【Manual Focus】: Please rotate the focus ring of the lens to achieve focus. Shutter speed and ISO need to be adjusted in general, so it is recommended to use it at "MF". At the same time, due to the large magnification of the telephoto lens, the slightest shaking of the hand greatly affects the quality of the picture, so pls use it with a tripod.
- 【EF Lens for Canon】: 420-800mm f/8.3-16 Manual Telephoto Zoom Lens Compatible/Replacement for Canon EOS Rebel T8i T7i T7 T6 T6s T6i T3i T2i SL3 SL2 90D 80D 77D 4000D, EOS-1D X Mark III, 1D X Mark II, 5D Mark IV, 6D Mark II etc
- 【Usage】: Equipped with ultra-high-definition multi-layer optical components and aluminum alloy housing. For those who photograph wildlife or the moon as a hobby, this lens would be a great choice.
- 【Note】: Our lenses are thoroughly checked and if they don't work, it's basically an operational and setup issue. Please feel free to contact us for more information on the settings and using. Meanwhile, manual lenses all need to be used by buyers with shooting experience. It is not recommended for beginners.
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Product details
- Product Dimensions : 24 x 6.7 x 6.7 cm; 950 g
- Date First Available : Dec 6 2023
- Manufacturer : BENOISON
- Place of Business : BENOISON
- ASIN : B0CPM399PQ
- Item model number : B-420-800
- Country of origin : China
- 鶹 Rank: #39,431 in Electronics (See Top 100 in Electronics)
- #228 in SLR Camera Lenses
- Customer Reviews:
What do customers buy after viewing this item?
Bestselling | Lowest price
in this set of productsHighest rated
in this set of products- BENOISON Telephoto Lens for Canon - EF Lens 420-800mm for Canon DSLR, Manual Focus MF Zoom Lens for Canon EOS Rebel SL3 SL2 SL1 T8i T7i T7 T6 4000D 1500D 90D 80D 77D 70D 60D 7D 6D 5D 1D DSLRFREE Shipping by 鶹Get it by Sunday, Aug 17Only 8 left in stock.
- EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens(MF) for Canon EOS Rebel T8i/T7i/T7/T6i/T5/T3i/T2i/XSi/SL3/SL2/T100/90D/80D/70D/50D/5D Mark IV/6D II/7D II/1D X III II - DSLR Cameras Lenses,WhiteFREE Shipping by 鶹Get it by Sunday, Aug 17Only 9 left in stock.
- Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens for Canon SLR CamerasFREE Shipping by 鶹Get it by Sunday, Aug 17
Compare with similar items
This Item ![]() Telephoto Lens 420-800mm - EF Lenses for Canon, Manual Telephoto Zoom Lens for Canon Rebel T8i T7i T7 T6 T6s T6i T3i T2i SL3 SL2 90D 80D 77D 4000D,1DX 5D 6D Mark II/III/IV DSLR | Recommendations | |||||
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Price | $76.22$76.22 | $105.00$105.00 | -13%$105.99$105.99 Was: $121.22 | -26%$94.62$94.62 Was: $128.00 | $105.99$105.99 | $139.99$139.99 |
Delivery | Get it by Sunday, Aug 17 | Get it by Sunday, Aug 17 | Get it by Sunday, Aug 17 | Get it by Sunday, Aug 17 | Get it by Sunday, Aug 17 | Get it by Sunday, Aug 17 |
Customer ratings | ||||||
Sold by | BENOISON | BENOISON | Lightdow Store | SZJINTU | Lightdow Store | Ultimaxx Direct |
lens type | Telephoto | Telephoto | Telephoto | Telephoto | Telephoto | Macro |
compatible mountings | Canon EF, Canon EF-S | Canon EF, Canon EF-S | Canon EF, Canon EF-S | Canon EF, Canon EF-S | Canon EF | Canon EF |
lens design | Zoom | Zoom | Zoom | Zoom | Zoom | Zoom |
focus type | Manual Focus | Manual Focus | Manual Focus | Manual Focus | Manual Focus | Manual Focus |
min. focal length | 420 millimeters | 420 millimeters | 420 millimeters | 420 millimeters | — | 420 millimeters |
maximum focal length | 800 millimeters | 800 millimeters | 800 millimeters | 800 millimeters | — | 840 millimeters |
fixed focal length | 800 millimeters | 420 millimeters | 800 millimeters | 800 millimeters | 420 millimeters | 800 millimeters |
real angle of view | 5 degrees | 5 degrees | 5 degrees | — | 5 degrees | — |
model name | B-420-800 | — | EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens | 420-800mm telephoto lens manual focus lens | Lightdow EF 420-800mm f/8.3 | Ultimaxx 420-800mm (w/Converter 840-1600mm) f/8.3-16 Manual Telephoto Zoom T-Mount Lens |
min. aperture | 16 f stop | 16 f stop | 16 f stop | 16 f stop | 16 f stop | — |
max. aperture | 8.3 f stop | 8.3 f stop | 8.3 f stop | 8.3 f stop | 8.3 f stop | 8.3 f stop |
From the brand

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- BENOISON is a brand that specializes in manual lenses for cameras.
- Return to the essence of photography, capture the beauty of life with manual lenses.
- Focusing on technology and cost-effectiveness, we have launched a diverse range of lens products to provide more choices for photography enthusiasts.
- Using for portraits, pets, wildlife photography, lotus flowers, and telephoto photography. Every photo is a story, every click is a memory.
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BENOISON LENS
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Product Description
BENOISON 420-800mm f8.3-16 Manual Focus Telephoto Lens for Canon EOS SLR Cameras
Focal length | 420-800mm |
Aperture | F8.3-16 |
Lens mount | EF/EF-S |
Focus Type | Manual Focus |
Sensor size | Full Frame |
Filter Size | 67mm |
Compatible Camera | For Canon EOS-1D X Mark III/II/1DX, 5D Mark IV/III/5DS/5DS R, 6D Mark II/6D, 7D Mark II, 90D 80D 77D 70D 60Da 50D 40D 30D 20Da 20D 10D 4000D 3000D 1500D 1000D 450D 400D 350D 300D, EOS Rebel SL3 SL2 T8i T7 T7i T6 T6s T6i T5 T5i T4i T3i T3 T2i and other EF/EF-S mount cameras. |

WITHOUT TELEPHOTO

WITHOUT TELEPHOTO
Observing birds in the distance
Use Steps on BENOISON Manual Lens - Requires manual focus
- Attaching our lens with T ring adapter(included) to your camera;
- Set the mode dial to Manual (M);
- Set the appropriate ISO/shutter speed and adjust the focal length according to the distance of the subject;
- Determine the subject and turn the focusing ring of the lens to focus;
- Take a test photo.
Perfect for moon shots!
FULL MANUAL LENS, no electric contacts→no auto focus→no image stabilization
If the picture turns out dark;
- Lower the shutter speed
- Raise the ISO Number
- Switch position to allow more light coming through the lens into the camera imaging sensor
FULL MANUAL LENS, require more exprerience with Manual Exposure. Also, the aperture value is not displayed in the camera. It has no stabilization and no autofocus, to get a sharp image you have to take the time to focus, this is what we call a manual lens. If you mind about this, buy the original lens.
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What is the filter size for this 420-800mm telephoto lens?
67mm filter size.
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Why can't I press the shutter to take a picture after mounting the lens?
Because our products are manual focus lenses with no electronic contacts, Please set the camera to M mode.
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Why does my picture out of focus and very blurry?
Manual focus lens need to need to turn the focus ring for manual focusing, pls rotate the focus ring on the body at the front of the lens to focus. If it is still blurry, pls use a tripod and time-lapse function to keep the image stable.
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Images are too bright/too dark
Too bright is because of overexposed, recommend to lower the ISO and increase the shutter speed. And too dark is because of underexposed, recommend to increase the ISO and decrease the shutter speed.

For those who photograph wildlife or the moon as a hobby, this lens would be a great choice.