ZWO 2.5mm 170 degree lens

Name: ZWO 2.5mm 170 degree lens
Brand: ZWO
SKU: ZWO-LENS-2.5
Price: 14.3 USD
Availability: InStock
Rating: 4.8 (5 reviews)

$14.3 ~~$22~~ In stock

Category: Astrophotography Accessories

Product Description

ZWO 2.5mm 170 degree lens

Technical Parameter:

Format support: 1/2″ sensor

Focal length: 2.5mm

Wide angel: 170 degree

Match Model：ASI178MM, ASI178MC, ASI185MC

Lens2.5mm Lens2.5mm_side

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Customer Reviews (4.8 / 5 · 5 reviews)

James ★★★★★ Oct 20, 2026

This little 2.5mm lens covers a massive 170-degree field on my ASI178MC, which is perfect for capturing the full Milky Way arch without any stitching. The focus ring is smooth and precise for such a compact piece of glass.

Ruby ★★★★★ Oct 19, 2026

Finally got this tiny wide-angle lens mounted on my ASI178MC and the 170-degree field is perfect for capturing the entire Milky Way core in a single frame. The 2.5mm focal length really lets me fit in more of the landscape and sky together.

Hazel F. ★★★★★ Oct 18, 2026

I was worried about distortion with such a wide angle, but the 170-degree view on my 1/2″ sensor captures incredible star fields without obvious bending at the edges. It pairs perfectly with my ASI178MC, making wide-field shots a breeze.