Includes all taxes
Tired of struggling to connect your Canon DSLR to your telescope or M42 lenses? EYSDON M42 to Canon EF T-Ring Adapter is your perfect solution! With precision machining, durable metal build, and universal compatibility, it helps you easily achieve professional astrophotography, microscope shooting, and vintage lens adaptation.
✨ Key Features
Universal Compatibility: This camera mount adapter enables you to connect your Canon EF-mount DSLR/SLR camera to M42x1mm threaded devices, including astronomical telescopes, microscopes, enlargers, bellows, and M42 mount lenses.
Infinity Focus Support: Designed to achieve perfect infinity focus, ideal for deep-sky astrophotography, landscape shooting, and astronomical observation.
Premium Metal Construction: Made of high-quality metal with precision machining, ensuring durable use, stable connection, and long service life.
Compact & Lightweight: Only 18g weight, easy to install and carry, no extra burden for your photography gear.
Wide Camera Compatibility: Fits all Canon EOS EF-mount DSLR/SLR camera bodies, covering popular models like 1D, 5D, 7D, 20D, 40D, 50D, 60D, 300D, 350D, 400D, 450D, 500D, 550D, 600D, 1000D, 1100D, etc.

📐 Product Specifications

📸 Application Scenarios
Astronomical Photography: Connect your Canon DSLR to astronomical telescopes for deep-sky, planetary, and lunar astrophotography.
Microscope Photography: Attach your camera to microscopes for scientific observation, biological research, and specimen shooting.
Vintage Lens Adaptation: Use M42 mount vintage lenses on Canon EF-mount cameras to expand your photography options.
Other Applications: Suitable for enlargers, bellows, slider copiers, and other M42*1mm threaded optical devices.
📦 Package Contents
1 x EYSDON M42 to Canon EF Mount T-Ring Camera Adapter
⚠️ Important Notes
Installation Tip: Please turn off the camera before installing or uninstalling the adapter to avoid damaging the camera or lens.
Manual Measurement: There may be a 0-2mm error in manual measurement, please understand before placing an order.
Color Difference: Due to different monitor settings, the actual color of the item may slightly differ from the picture, thank you for your understanding.
AF Function: This adapter does not support auto-focus (AF), please use manual focus for shooting.
FAQ
Q: Does this adapter work with Canon mirrorless cameras?
A: This adapter is designed for Canon EF-mount DSLR/SLR cameras. For Canon RF-mount mirrorless cameras, you need an additional EF-RF adapter (sold separately).
Q: Can I use this adapter for auto-focus?
A: No, this adapter only supports manual focus, as it is a mechanical adapter without electronic contacts.
Q: Will this adapter affect image quality?
A: No, the adapter is made of high-quality metal with precision machining, it will not affect the image quality of your camera and lens.





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At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.
1. Accepted Payment Methods
We accept the following payment options:
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Delivery Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.
1. Order Processing
All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.
2. Shipping Times
Estimated delivery times vary depending on your location:
Domestic Shipping: 3–7 business days
International Shipping: 7–15 business days
Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.
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Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.
Refund Policy – BILLIONS BIRDS
At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.
1. Return Eligibility
You may request a return within 14 days of receiving your order. To qualify for a return:
The item must be unused, unworn, and in the same condition as received.
The item must be in its original packaging.
Proof of purchase (order confirmation or receipt) is required.
Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.
2. Non-Refundable Items
The following items are non-refundable:
Final sale or discounted items
Gift cards
Items damaged due to misuse, negligence, or improper care
3. Return Process
To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.
Unless the item is defective or incorrect, customers are responsible for return shipping costs.
4. Refund Processing
Once we receive and inspect your returned item:
We will notify you of the approval or rejection of your refund.
If approved, the refund will be issued to your original payment method within 5–10 business days.
Please note that banks or payment providers may require additional time to process refunds.
5. Damaged or Incorrect Items
If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.
6. Late or Missing Refunds
If you have not received your refund:
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Contact your credit card company or payment provider.
If the issue persists, don't hesitate to contact our support team for assistance.
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