EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens(MF) + T-Mount 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 – Manual DSLR Cameras Lenses

Price: $69.99 - $67.99
(as of Nov 12, 2025 07:38:01 UTC – Details)

Product description

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Lightdow 420-800mm f/8.3 Manual Zoom Super Telephoto Lens + T-Mount (Full Frame)

Focal Length 420-800mm Aperture Range F8.3-16 Filter diamater 67mm Focus Type Manual Focus Closest Focus Distance 3m/10Ft Lens mount For Canon EF/EF-S (with T adapter) Compatible Camera EOS Rebel SL3 SL2 | T8i T7 T7i T6 T6s T6i T5 T5i T4i T3i T3 T2i | 850D 800D 760D 750D 700D 650D 600D 550D 500D 450D 400D 350D 300D | 250D 200D 100D | 90D 80D 77D 70D 60D 60Da 50D 40D 30D 20D 20Da 10D | 4000D 3000D | 2000D 1300D 1200D 1100D 1000D | 1D/1D Mark II/1D Mark III/1D Mark IV | 1DC | 1DX/1DX Mark II/1DX Mark III | 1Ds/1Ds Mark II/1Ds Mark III | 5D/5D Mark II/5D Mark III | 5DS/5DS R | 6D/6D Mark II | 7D/7D Mark II. Incompatible Models NOT for Canon Mirrorless Camera, such as EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 | EOS M, M3, M5, M6, M6 mark II, M10, M50, M100, M200

Telephoto 420mm Telephoto 800mm

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.

Lightdow Manual Focus Telephoto Lens VERY IMPORTANT NOTES

FULL MANUAL LENS, no electric contacts→no auto focus→no image stabilization, require more exprerience with Manual Exposure.

Need to set camera to M mode.Camera will not display the aperture value

Manual Lens: The focus ring on the lens needs to be turned to focus accurately. As with all telephoto lenses, it is recommended to use with a tripod and the timer function to avoid camera shake for best results.

Zoom Telephoto Lens 420-800mm f/8.3-16 Manual Super Telephoto Zoom Lens

If the image turns out dark, perform the following steps,

Reduce the shutter speed, from 1/500s down to 1/100s or slower 1/50 etc;Increase the ISO value, from ISO 100 to ISO 200/400/800 etc.

It may take some time to get the perfect shot you want, just keep practicing and exploring the fun of manual telephoto lens. Not recommended for beginners.

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.

Manual Focus Lens – Used in M-mode

How to Use the Manual Lens?

Attach the lens with T-ring adapter to your camera;Switch to M mode. No aperture value displayed

ISO and shutter speed must be adjusted manually in M mode.Manual lenses do not display the aperture value, which is why F00 or F– is displayed on the camera.The aperture value F8.3-16 cannot be set by the camera, this is automatically changed with the focal length 420 – 800mm.

Why can’t my camera press the shutter after installation?

This is a full manual focus lens, no electric contacts, your camera will not detect the lens when mounted, switch camera to M mode and then you can press the shutter and take photo.

Why does my picture seem to be blurry, out of focus?

Fine tune the front focusing ring to make your target in focus.

How to do if the image turns out dark?

Increase the ISO and decrease the shutter speed. If the image turns out too bright, reverse the above steps.

[Easy-to-Use Warm Tips] – ⚠Fully manual(Advantages: precise focus control, creative freedom, high adaptability, stability and durability, and learning value) lens has no electronic contacts for focusing. Switch the camera to full manual (M) mode immediately after installation, otherwise the “no lens” error may be triggered; ⚠If the error still occurs, you need to enable the “Release shutter without lens” option in the camera menu (common on Nikon/Sony models, etc.).
[Professional Manual Focus Experience] – Tailored for photographers who pursue the ultimate, the 420-800mm F8.3 lens adopts a fully manual focus design, requiring photographers to carefully adjust parameters such as shutter speed, ISO and aperture before shooting. This process not only exercises photographic skills, but also inspires unlimited artistic creativity, helping you to transcend conventions and explore the infinite possibilities of photography.
[Super Telephoto Zoom Lens] – The 420-800mm f/8.3-16 full-frame zoom lens is designed specifically for professional photographers. It includes an adapter ring at no additional cost. Features include precision manual focus with a large focus ring design and an internal focus mechanism, UMC technology to minimize aberrations and flare, resulting in sharp images with exceptional background bokeh. The aperture automatically adjusts based on focal length (f/8.3 at 420mm, f/16 at 800mm), and it is compatible with 62mm filters and EF/EF-S mounts.
[Wide Compatibility with Canon EF/EF-S Mount] – Lightdow 420-800mm f8.3 telephoto lens is perfectly compatible with for Canon EOS Rebel T8i/T7i/T7/T6s/T6i/T6/T5i/T5/T4i/T3i/T3/T2i/T1i/XSi/XS/SL3/SL2/SL1(100D) & Digital Rebel/XTi/XT/T100(4000D) & EOS 90D/80D/77D/70D/60D/50D/40D/30D/20D/10D/7D Mark II/7D/6D Mark II/6D/5DS R/5DS/5D Mark IV/5D Mark III/5D Mark II/5D & EOS-1D X Mark III/1D X Mark II/1D X/1Ds Mark III/1Ds Mark II/1Ds/1D Mark IV/1D Mark III/1D Mark II/Mark II N/1D.
[Capture Capabilities] – 420-800mm manual focus telephoto lens excels at capturing detailed images of distant subjects, effectively bringing remote objects closer. It is ideal for photographing the moon, wildlife, birds, buildings, airplanes, landscapes, and more. The aperture range is F8.3-16, and it automatically adjusts with the focal length. Consequently, the camera cannot set the aperture value of the manual lens, resulting in the display of F00/F– on the camera.