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-S, Canon EF |
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: #27,081 in Electronics (See Top 100 in Electronics)
- #135 in SLR Camera Lenses
- Customer Reviews:
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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 | -11%$114.00$114.00 Was: $128.00 | $105.99$105.99 | -8%$118.00$118.00 List: $128.00 |
Delivery | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 |
Customer ratings | ||||||
Sold by | BENOISON | BENOISON | Lightdow Store | SZJINTU | Lightdow Store | SZJINTU |
lens type | Telephoto | Telephoto | Telephoto | Telephoto | Telephoto | Telephoto |
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, Canon EF-S |
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 | — | 800 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 | 5 degrees |
model name | B-420-800 | — | ééDzپ | 420-800mm telephoto lens manual focus lens | Lightdow EF 420-800mm f/8.3 | 420-800mm telephoto lens manual control |
min. aperture | 16 f stop | 16 f stop | 16 f stop | 16 f stop | 16 f stop | 8.3 f stop |
max. aperture | 8.3 f stop | 8.3 f stop | 8.3 f stop | 8.3 f stop | 8.3 f stop | 22 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.
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Customer reviews
Reviews with images

Long Range Fun with the Telephoto Lens
Top reviews from Canada
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Reviewed in Canada on April 7, 2024Verified PurchaseJe prends beaucoup de photos mais j’avais besoin d’une lentille qui me donne mes sujets de près tout en ne dérangeant pas la nature autour
- Reviewed in Canada on April 9, 2024The media could not be loaded.
When I hit the focus as sharp as possible, the purple fringing that I fully expected was significantly reduced. You can see that in the closeup of the lens in the grass (mirror imaged to get the lens caps close together).
It wasn't as obvious while shooting or previewing on the camera's back display but really stood out in editing later. From now on I will take multiple shots when they are distant subjects to bracket the focus ever so slightly. The crude feel of the focus ring on this lens makes that a bit tricky and my camera does not have focus bracketing.
Of course this lens slipped out of my hands and fell from the back seat of the car on to the parking lot (while in its supplied bag) while doing these trials and seems no worse for that blooper. This lens is stone axe simple in design and build.
The longest focal length I have to swap with this is a 70-300mm so it was not possible to get matching focal length comparisons. Taking into account that this BENOISON 420-800mm is getting me so much further out it's easy to pick out flaws on rendering objects my 70-300mm will never reveal. Seeing the individual rivets on the water tower tank is impressive. That shot is a cropped portion from a 24Mp at the 800mm maximum. On the uncropped images the purple fringing is most noticeable on the horizontal electrical cables and a vertical pipe on the tank, which are where I expected I'd find any purple, from past experience trying to re-use ancient lenses of mine. I look at it like the price to pay in image quality for reaching that far away on this bargain price lens.
The focal lengths involved really needed a sturdy tripod, not a lightweight field tripod. It takes for ever for it to settle down and the slightest breeze is noticeable. In future I will be using my rigid carbon video tripod. I did use the 1/4-20 threaded ring on the lens to mount it. Anyway a lot of those comments are generic to any long focal length lens.
The dust cap for the camera end is no use once an aftermarket adapter ring is installed so I keep the lens in the pouch with the open end in first. I ordered a simple adapter to a Sony full frame E mount separately from 鶹. Everything connects easily.
3.0 out of 5 starsI'm going to start at the end with my main conclusion: Sharp focus is everything!An oddity in lenses that bettered my expectations.
Reviewed in Canada on April 9, 2024
When I hit the focus as sharp as possible, the purple fringing that I fully expected was significantly reduced. You can see that in the closeup of the lens in the grass (mirror imaged to get the lens caps close together).
It wasn't as obvious while shooting or previewing on the camera's back display but really stood out in editing later. From now on I will take multiple shots when they are distant subjects to bracket the focus ever so slightly. The crude feel of the focus ring on this lens makes that a bit tricky and my camera does not have focus bracketing.
Of course this lens slipped out of my hands and fell from the back seat of the car on to the parking lot (while in its supplied bag) while doing these trials and seems no worse for that blooper. This lens is stone axe simple in design and build.
The longest focal length I have to swap with this is a 70-300mm so it was not possible to get matching focal length comparisons. Taking into account that this BENOISON 420-800mm is getting me so much further out it's easy to pick out flaws on rendering objects my 70-300mm will never reveal. Seeing the individual rivets on the water tower tank is impressive. That shot is a cropped portion from a 24Mp at the 800mm maximum. On the uncropped images the purple fringing is most noticeable on the horizontal electrical cables and a vertical pipe on the tank, which are where I expected I'd find any purple, from past experience trying to re-use ancient lenses of mine. I look at it like the price to pay in image quality for reaching that far away on this bargain price lens.
The focal lengths involved really needed a sturdy tripod, not a lightweight field tripod. It takes for ever for it to settle down and the slightest breeze is noticeable. In future I will be using my rigid carbon video tripod. I did use the 1/4-20 threaded ring on the lens to mount it. Anyway a lot of those comments are generic to any long focal length lens.
The dust cap for the camera end is no use once an aftermarket adapter ring is installed so I keep the lens in the pouch with the open end in first. I ordered a simple adapter to a Sony full frame E mount separately from 鶹. Everything connects easily.
Images in this review
- Reviewed in Canada on July 1, 2024Verified PurchaseI had hard time focussing it
Definitely not a lens for beginners like me
- Reviewed in Canada on December 14, 2024Verified PurchaseDoesn’t fit all EF lenses like the initial descriptions describes.
- Reviewed in Canada on April 1, 2024I was intrigued by long-range photography and looking to explore on a budget, I decided to try out the Telephoto Lens 420-800mm for Canon. With its manual zoom and focus capabilities, this lens promised to be a fun addition to my photography gear, offering a new level of creativity and exploration. Here's what I found:
Pros:
- Lightweight and Fun: This telephoto lens is a lightweight and enjoyable addition to my camera kit. Its manual operation adds a sense of adventure to photography, allowing for creative experimentation and exploration.
- Budget-Friendly: As a budget option, this lens provides an affordable way to explore long-range photography without breaking the bank. It offers decent optical performance for its price point, making it a great option for beginners or hobbyists.
- Long Telephoto Range: The lens offers an impressive focal length range of 420-800mm, making it ideal for capturing distant subjects such as wildlife and the moon.
Cons:
- Lack of Electronic Communication: Since the lens lacks electronic contacts, it cannot communicate with the camera, requiring manual adjustment of settings such as shutter speed and ISO.
- Requires Tripod for Stability: Due to its long focal length, even slight hand movements can significantly affect image quality, necessitating the use of a tripod for stability, especially when fully extended to 800mm.
- Not Suitable for Beginners: The lens's manual operation and setup may pose challenges for beginners, requiring users to have prior shooting experience and knowledge of manual photography techniques.
- Limited Aperture Range: With a maximum aperture of f/8.3-16, the lens may struggle in low-light conditions, limiting its usability to well-lit environments or daytime shooting situations.
4.0 out of 5 starsI was intrigued by long-range photography and looking to explore on a budget, I decided to try out the Telephoto Lens 420-800mm for Canon. With its manual zoom and focus capabilities, this lens promised to be a fun addition to my photography gear, offering a new level of creativity and exploration. Here's what I found:Long Range Fun with the Telephoto Lens
Reviewed in Canada on April 1, 2024
Pros:
- Lightweight and Fun: This telephoto lens is a lightweight and enjoyable addition to my camera kit. Its manual operation adds a sense of adventure to photography, allowing for creative experimentation and exploration.
- Budget-Friendly: As a budget option, this lens provides an affordable way to explore long-range photography without breaking the bank. It offers decent optical performance for its price point, making it a great option for beginners or hobbyists.
- Long Telephoto Range: The lens offers an impressive focal length range of 420-800mm, making it ideal for capturing distant subjects such as wildlife and the moon.
Cons:
- Lack of Electronic Communication: Since the lens lacks electronic contacts, it cannot communicate with the camera, requiring manual adjustment of settings such as shutter speed and ISO.
- Requires Tripod for Stability: Due to its long focal length, even slight hand movements can significantly affect image quality, necessitating the use of a tripod for stability, especially when fully extended to 800mm.
- Not Suitable for Beginners: The lens's manual operation and setup may pose challenges for beginners, requiring users to have prior shooting experience and knowledge of manual photography techniques.
- Limited Aperture Range: With a maximum aperture of f/8.3-16, the lens may struggle in low-light conditions, limiting its usability to well-lit environments or daytime shooting situations.
Images in this review
Top reviews from other countries
- AlexReviewed in Australia on November 27, 2024
5.0 out of 5 stars Fantastic, requires skill
I used this lens on my Sony ZV-E10 through an adapter, and it works smoothly. I can take clear pictures of things at a range of distances, though I'm still getting used to manual-focused lenses!
Skill issue is a thing here!
The tripod mount ring is very helpful, too.
This is a great "first telephoto lens" or great budget lens for any photographer.
- ReviewerReviewed in Australia on January 7, 2025
3.0 out of 5 stars Don't think it's really for beginners
First noticeable thing about this lens, it is manual not autofocus just so we are clear. It is mentioned in the title and description, but keep that in mind.
I'm by no means an experienced photographer, but have been using SLR cameras for as long as I remember (both wet film and digital). I don't really know how to describe it, is it a basic lens for a semi-beginner, or for a more advanced photographer who knows manual shooting methods? I can't decide.
You will 100% need to use this in conjunction with a solid tripod, is almost impossible to take stable and focussed photos by hand.
In hindsight do I think it's worth the money? Yeah I think it's fair, but just be prepared to do everything manually - this is not a point and shoot lens.