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Pixfra Sirius S650D Thermal Imaging Monocular
The Pixfra Sirius S650D Thermal Imaging Monocular combines cutting-edge technology for serious observation and wildlife monitoring, including a unique dual-lens system, 2600m detection range and AI-assisted calibration.
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Key Features
- 640x512 12µm thermal sensor with =18mK NETD
- Dual objective lenses: 25mm f0.88 and 50mm f1.1
- Detection range up to 2600m
- Up to 3.45x digital magnification
- AI image calibration for improved clarity
- 0.49” 1920x1080 OLED display
- Quick-release battery with up to 6 hours runtime
- Lightweight ergonomic design with carbon fibre accents
- Streamlined 3-button control layout
- Metal lens cover for added durability
Pixfra Sirius S650D Thermal Imaging Monocular Summary
The Pixfra Sirius S650D Thermal Imaging Monocular is a powerful dual-lens device for serious observation and wildlife monitoring. It features a high-resolution 640x512, 12µm thermal sensor with =18mK NETD sensitivity and a unique dual-lens system, with a 25mm f0.88 and 50mm f1.1 objective lens, offering a detection range of up to 2600m and magnification up to 3.45x. This versatile optical combination allows users to easily switch between scanning wide areas and focusing on specific subjects in finer detail.
The binocular is equipped with a bright 0.49” 1920x1080 OLED display and AI-assisted image calibration, with clear, high-contrast images for extended viewing sessions. It is well designed, with Pixfra’s ergonomic handling, and features a backlit power button, carbon fibre accents, and a streamlined three-button control layout for ease-of-use.
The Thermal Imaging Monocular runs on a quick-release rechargeable battery that provides up to 6 hours of use and is housed in a rugged casing with a metal lens cover. With user-friendly functionality and versatile observation options, the S650D is ideal for ecological research, wildlife conservation, and outdoor exploration, offering a robust solution for advanced thermal imaging in a variety of environments and conditions.
Pixfra Sirius S650D Thermal Imaging Monocular in More Detail
Unique Dual-Lens Design
The Sirius S650D stands out with its dual-lens system, combining a 25mm f0.88 wide-angle lens for quick scanning and a 50mm f1.1 telephoto lens for detailed observation. With just a twist, users can switch between the two, tailoring their view to the scene and gaining better control over their observation experience.
High-Precision Thermal Imaging
Equipped with a professional-grade 640x512 thermal sensor and advanced =18mK NETD sensitivity, the Sirius S650D is capable of detecting subtle differences in temperature. This means it can clearly identify warm objects against complex backgrounds, even at long range. With up to 3.45x magnification and AI-powered image calibration, it produces sharp, consistent images regardless of environmental conditions.
Comfortable, Intuitive Design
The ergonomic body is engineered for ease of use, featuring Pixfra’s signature styling, a low-profile button layout, and a discreetly integrated power button that glows gently (or can be turned off completely). The control system is intuitive and simple to navigate, enabling one-handed operation without distraction. A metal lens cap offers physical protection during travel or storage.
Extended Observations
With up to 6 hours of operation from its quick-release battery system, the Sirius S650D supports long periods of fieldwork. Swapping batteries is easy and tool-free, ensuring uninterrupted observation.
What's in the Box
- Pixfra Sirius S650D Thermal Imaging Monocular
Thinking of choosing finance?
Finance is a great way to spread the cost of your purchase. To make it easy we have teamed up with Omni, one of the UK’s leading finance specialists, so that you can apply for and complete a loan application quickly, easily and informatively.
Omni Capital Retail Finance Ltd which is a credit provider/ lender regulated by the Financial Conduct Authority whose finance options are best suited for you and your purchase.
Simply add the items you love to your basket. Once you are at the checkout select the finance option that suits you and choose Omni. The quick application form is simple and should take no more than a couple of minutes to complete and you will receive a decision instantly. Easy!
Use our finance calculator to check the impact of various loan values, terms and interest rates on the total amount you need to pay and the monthly repayments.
Representative example:
Buy a £1,200.00 camera and pay a 10% deposit of £120. You'll borrow £1,080 over 24 months with an annual interest rate of 14.9% (fixed) with a first payment of £52.04 followed by 23 monthly repayments of £51.83. The total amount payable will be £1,244.13 14.9% APR Representative.
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Check your eligibility
To be considered for finance, you will need to meet all of the following criteria:
- Are at least 18 years old
- Are in regular full or part-time employment (minimum 1 hour per week or £10,000 income per annum), unless you are retired and receiving a private or company pension, or you are in receipt of disability living allowance
- Are a permanent UK resident and have lived in the UK for at least 3 years
- Have a UK bank account capable of accepting Direct Debits
- Have a good credit history with no late payments, Debt Relief Orders, County Court Judgments or bankruptcies.

Please note that, due to calculations, your monthly repayment may differ very slightly from what you were expecting. Please check your monthly repayment figure before proceeding
Missed or late payments will result in fees and additional interest on your loan and can also affect your credit file and your ability to obtain credit in the future.
Credit is subject to status, UK only, 18+
Park Cameras Limited is a credit broker, not a lender and is authorised and regulated by the Financial Conduct Authority (FRN 680161). We do not charge you for credit broking services. We will introduce you exclusively to finance products provided by Omni Capital Retail Finance Ltd.
Omni Capital Retail Finance Ltd which is a credit provider/ lender regulated by the Financial Conduct Authority, Firm Reference Number: 720279. For more information please go to www.omnicapitalretailfinance.co.uk/contact/customer or visit www.omnicapitalretailfinance.co.uk.
Find out more about paying with finance here and Omni Capital Retail Finance Ltd terms here
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Condition guide
Our used products are subject to wear and tear in comparison to brand new products. This also applies to accessories that are supplied with the camera including batteries which may have a lower optimum performance level/life expectancy.
- Like New – The equipment is in a condition as if you have just bought it from the manufacturer. The item is still considered to be ‘Like New’ even without the original packaging and accessories. The product has been fully tested and is in perfect working order. Lenses are optically clear. There may be light dust present that will not effect the imagery.
- Excellent – The equipment should be close to being ‘Like New’ but there may be some small cosmetic blemishes that lower its grade. The product has been fully tested and is in perfect excellent order.
- Cameras – Should have no marks on the LCD screen
- Lenses – Should have no marks on the elements and optically clear. There may be light dust present that will not effect the imagery.
- Very Good – The equipment may have some slight cosmetic wear to the paintwork and cosmetic blemishes with only light signs of use and the product has been fully tested and is in great working order.
- Cameras – The LCD screen may have small signs of wear that does not affect its display
- Lenses – The mount of the lens will start to show signs of wear
- Good – The equipment is showing more obvious signs of cosmetic wear and blemishes, but the product has been fully tested and is in great working order.
- Cameras – LCD screen may have scratches or wear that is starting to affect the display.
- Lenses – May have slight dust inside that does not affect images. The mount shows signs of use.
- Well Used – The equipment will show significant signs of wear. The paintwork will be coming away in large areas exposing the metal work, but the product has been fully tested and is in great working order.
- Cameras – LCD screen is heavily worn either by de-lamination or has scratches to it. Rubber grips are starting to come away from the body.
- Lenses – The lens has dust inside that may affect images. The rubber zoom/focus ring is coming away from the barrel of the lens.
*All of our used items are listed with the accessories that are included. If they are not listed, then they will not be supplied at the point of purchase.
Peace of mind with our 6 month warranty
This product has been thoroughly tested by our team of photographers and we are happy to give a 6 month warranty as a result. The number of tests depends on the individual product but we are confident in this product having tested all the major functions. Anything that isn’t as you would expect, we then make a note of and show this in the condition notes on the page.
So you can be confident you are buying a great piece of kit that’s been looked after by a fellow photographer and seen many extraordinary sights, tested by our team of photographers and now looking forward to being set free to capture more great images!