Price: $67.00
(as of Apr 28, 2025 01:03:06 UTC – Details)
Product Description
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. BENOISON Telephoto Lens for Canon RF Merchant Video
BENOISON 420-800mm f8.3 Manual Telephoto Lens for Canon RF (RF Mount)
Compatible Models (for Canon R series):
for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless Camera (RF mount)Not for Canon EOS M50, M100, M6, M5, M10, M3, M (EF-M mount)Not for Canon EOS Rebel SL3 SL2 T8i T7 T6 T5 4000D 2000D 90D 77D 6D 5D 1D…… (EF/EF-S mount)
Use in M Mode
When using a manual lens, the camera should be set to “M” manual mode.Since manual lenses lack electronic contacts for lens recognition, the inability to automatically adjust exposure values may result in photos that are too dark or too white.Manual setting of ISO and shutter speed is required. 
F00 Display
Manual lenses do not have an electronic contact, “F00” is displayed because the camera is unable to acquire aperture information.At the same time, the aperture information cannot be adjusted from the camera, and the aperture value can only be changed automatically by adjusting the focal length.
How to use the manual lens?
Enable “Release shutter w/o Lens”
You can not press the shutter after attaching. To resolve this, Enable “Release shutter w/o Lens”. Tips to use our Manual Lens: 1) Set the Release shutter w/o Lens option in the camera menu to Enable. 2) Set the mode dial to Manual (M).Note that the aperture value will not be displayed (it will show “F00”). The aperture can only be changed automatically by adjusting the focal length, for example: 420mm/F8.3 → 500mm/F10 → 600mm/F12 → 700mm/F14 → 800mm/F16.
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Enable “Release shutter w/o Lens” Merchant Video
Why can’t I press the shutter after mounting the lens?
Please do Enable the “Release shutter w/o lens”, and then you can press the shutter to take a picture.
Why does my picture out of focus and very blurry?
Since our lenses are manual lenses, there are no electronic contacts for autofocus. Need to turn the focus ring (on the front of the lens) for manual focusing. If it is still blurry, use a tripod and time-lapse function to keep the image stable.
Why is F00 displayed and how can the aperture value be set?
As the manual lens has no electronic contacts to recognize the aperture value, “F00” is displayed. The aperture value can only be adjusted automatically by changing the focal length. (420mm/F8.3 →500mm/F10→600mm/F12→700mm/F14→800mm/F16)
What if the image turn out bright?
If the image is too bright, lower the ISO (e.g. from 200 to 100) to reduce the light sensitivity and increase the shutter speed (e.g. from 1/125s to 1/250s) to reduce the exposure and avoid overexposure.
What if the image turn out dark?
If the image is too dark, increase the ISO (e.g. from 800 to 1600) to increase the sensitivity and decrease the shutter speed (e.g. from 1/250s to 1/125s) to allow more light onto the sensor.
【Super Telephoto Lens】Manual focus telephoto lens, NOT original-lens, a focal length of 420-800mm and an aperture of F/8.3-16 (non-adjustable aperture value, f8.3 at 420mm and f16 at 800mm), filter size of 62mm, full frame, RF mount, built with high-quality materials and robust construction, making them durable and long-lasting;
【RF Lens for Canon R Series Mirrorless Camera】420-800mm Manual Telephoto Lens Compatible for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless Camera (Not for Canon M series Mirrorless);
【Upgraded Version】Upgraded into an RF mount, which can be mounted on Canon mirrorless cameras without connecting the T adapter ring. For those who photograph wildlife or the moon as a hobby, this lens would be a great choice;
【User Instraction】This is a FULL MANUAL lens, NO Electronic Contacts, your camera will not allow to press the shutter after the lens is mounted, please set the “Release shutter w/o Lens” option in the camera menu to “Enable”. Tips to use our Manual Lens: 1) Set the Release shutter w/o Lens option in the camera menu to Enable. 2) Set the mode dial to Manual (M);
【Manual Focus】The lens has a focus ring located near the front. Manually rotate this focus ring to adjust the focus. Turn the ring slowly until the subject you want to focus on appears sharp and clear. Also, with manual lenses, the aperture value is not displayed in the viewfinder (F00 is displayed).
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ivan beltran –
Lente Benson
Es bueno el producto
Mr. Ultimate Consumer –
Excellent value for a budget lens
I only drag out a lens of this focal length occasionally, so I can’t justify $500+ for a good name brand lens. This lens is perfect for my occasional nature or astrophotography. I have to strongly recommend the seller. I tried to use the first lens I received well after the Amazon return window ended for it. There was a big problem with the EF mount for the Canon. It would not turn and lock in. The lugs of the lens would insert into the camera body but something was machined in the lens’ mount that blocked it from turning. I posted a review describing the issue. Less than a week later the seller contacted me and eventually offered a replacement lens. The new lens works fine. Attached is a photo of the blood moon of 3/14/25. There is no automatic focus or exposure and the lens is fixed aperture. I find that aperture priority auto, or full manual mode, works best.
Fly bubble –
Good value and good lens
A good lens at amazing value. Too slow for nebular work but good for moon and planets.
Efrain Munoz –
Great deal!
Great deal!
Doc Monty –
Manual focus lens at a bargain price
Nice lens for the price. As with all telephoto lenses in this price range they do suffer from chromatic aberration. This is an easy fix by making an aperture filter ring to reduce the amount of light coming through the front of the lens. There are several YouTube videos on how to accomplish this.
Eye Take Photos –
Bamboozled
I canât get the damn lens off. Any suggestions would be helpful. if I could this would get zero stars.
Shaun Campbell –
Price
Value goes with price, I feel issues are manufacturing issues and seller made contact to resolve issues, would recommend seller
Andre –
You decide me I like it
I have no complaints does what it does
LeeAnn B –
It has decent zoom but not a wide variety of distances within its limits. There a bit of a rainbow when zoomed in too much. A decent tripod is almost a necessity. Learning curve is steep, as it can be difficult to work with (may be the same for all zoom lenses), to zoom, focus and adjust settings on camera just to take one shot. All in all, it’s a decent lens at a good price. Good to learn and practice with.Rating may be higher once I get better working with it….better results/picturesUPDATED: I’ve had a chance to better use the lense. The pictures it took were quite good, even without a tripod (but still…get one!). Im still working on using different zoom lenghts. Attached pics were taken “across the lake” For the price, it is likely what I will need. Rating has been increased accordingly.
méheut marc –
tres satisfait
Annalisa –
Prodotto perfetto
Thomas Gareis –
Passt erfüllt seine Zwecke ð für das Geld kann man nicht mehr erwarten.
Mgsjoker –
Nice lends clear image bit fiddly to use but once its set up you can take some nice shots