JINTU 420-1600mm Telephoto Zoom Lens Manual Focus - Ultra Reach

Our review of the JINTU 420-1600mm telephoto zoom lens finds it best suited for hobbyists and budget-conscious photographers who need extreme reach rather than autofocus convenience. The single biggest reason to consider this lens is its sheer focal-length versatility: a native 420-800mm range that can be doubled with the included 2X teleconverter to reach 1600mm, making distant wildlife, birding and moon photography possible without an expensive prime. Expect manual operation, a sturdy metal build, and a learning curve for focusing at long distances.

Key Features

• 420-800mm zoom: Covers a very long range for distant subjects so you can frame wildlife or landscape details from far away without changing lenses.
• 2X teleconverter included: Doubles focal length to 1600mm for extreme telephoto work when subjects are very distant or small in the frame.
• Fixed aperture profile: An effective aperture of f8.3 at 420mm to f16 at 800mm gives predictable exposure behavior across the zoom range.
• Manual focus control: A front-mounted focus ring gives precise, hands-on focusing for deliberate composition and focus stacking at long distances.
• Metal construction and multi-coated glass: Solid build and coated elements help deliver durable performance and reduce flare for outdoor shooting.
• Two T-mount adapters included: Comes with a T2-EOS adapter and a T2-AI style adapter for compatibility with many Canon and Nikon SLR bodies.

Who It's For

This lens is aimed at amateur wildlife photographers, moon and astronomy hobbyists, and travelers who want extreme reach on a budget and do not mind manual operation. Its long focal length and included adapters make it useful for someone who prioritizes reach over fast operation and who shoots from a tripod or stable support.

Photographers who need autofocus, electronic aperture control, or fast low-light performance should look elsewhere; this lens has no electronic contacts, no autofocus, and a relatively small maximum effective aperture that limits handheld low-light use.

Pros & Cons

Pros

• Exceptional focal-length range for the price, including a 2X teleconverter to reach 1600mm.
• Solid all-metal body and multi-coated glass elements that feel durable for outdoor work.
• Comes with T-mount adapters to fit a wide range of Canon and Nikon SLR cameras.
• Manual focus encourages careful composition and can deliver sharp results when used on a tripod.

Cons

• No electronic contacts or autofocus, so exposure and focus are manual and the camera may show F00 for aperture.
• Some users report mixed experiences with focus smoothness and vignetting at extreme focal lengths.

Specifications

Focal length	420-800mm (2X converter to 1600mm)
Aperture	F8.3 at 420mm to f16 at 800mm (non-adjustable)
Focus	Manual focus with front focus ring
Mount adapters	Includes T2-EOS and T2-AI/Nikon style adapters
Body	Full metal construction
Optics	Multi-coated low-dispersion glass elements

Our Verdict

The JINTU 420-1600mm is a compelling value for photographers who need extreme telephoto reach without a heavy price tag and who accept manual focus and exposure tradeoffs. It is well suited to tripod-based wildlife, birding and moon photography and offers solid build quality and useful adapters, but it is not a substitute for a modern autofocus telephoto for fast action or low-light handheld work.

Frequently Asked Questions

Will this lens autofocus on my Canon or Nikon camera?
No. This is a manual focus lens with no electronic contacts; autofocus and electronic aperture control are not supported.

Does the lens include adapters for Canon and Nikon mounts?
Yes. The package includes a T2-EOS adapter for Canon EF/EF-S compatibility and a T2-AI style adapter for many Nikon F-mount cameras.

How do I handle exposure and aperture readings?
Set the camera to manual mode; the lens has a fixed effective aperture and the camera may display F00 because it cannot communicate aperture information.