Decoding what the numbers mean on thermal scopes?
Many people are interested in thermal scopes but do have questions. What does the 35 mean on a 35-384 scope? What does the 650 mean on a 50-640 scope? Is one better than the other? If so, what makes them better? Hopefully with the following we can help you to better decide which objective lens is better for you and which sensor offers what you need in a thermal scope.
Objective Lens (35mm vs. 50mm)
- Typically provides a wider field of view (FOV).
- Better for scanning large areas quickly.
- Generally offers lower magnification compared to 50mm lenses.
- Less light-gathering capacity, which can affect image clarity at longer distances in low-light conditions.
- Offers a narrower FOV but higher magnification.
- Better for detailed observation at longer distances.
- Increased light-gathering capability leads to clearer images in low-light or poor visibility conditions.
- Slightly heavier and bulkier.
Sensor Resolution (384 vs. 650)
384 Sensor (often referring to dimensions 384x288 pixels):
- Lower resolution, which can result in less detailed thermal images.
- Usually more affordable and consumes less power.
- Adequate for general observation or quick scans.
640 Sensor (commonly 640x480 pixels or similar):
- Higher resolution, providing more detailed and clearer thermal images.
- Better for identifying targets precisely at longer ranges.
- Usually more expensive and may consume more power.
Summary:
- Objective Lens impacts the FOV, magnification, and low-light performance.
- Sensor resolution impacts the detail and clarity of thermal images.
Please visit our selection of thermal scopes, Predator Thermal Optics, and choose which model works best for you.