The Pulsar F38 is a 38mm interchangeable objective lens designed for the Helion XP series of thermal monoculars. It uses a quick-release bayonet mount, so swapping between the F28, F38 and F50 lenses takes seconds in the field — useful when you want to shift from a wide spotting view to tighter observation without changing device. With this lens fitted to a Helion XP, you get a 16.3° field of view, magnification ranging from 1.9x up to 15.2x with digital zoom, and a detection range of up to 1,350m. The F38/1.2 aperture keeps sensitivity high in low-contrast thermal conditions. The lens is fully sealed against rain and condensation. Whether you run a Helion XP28, XP38 or XP50, the F38 drops straight in — it is cross-compatible across the entire Helion XP range, giving you genuine versatility from a single spare optic.
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