Best M42 Camera Lenses in 2026

Doubles the Magnification: This 2X Barlow lens doubles the magnification and capacity of any 1.25 inch eyepiece at the cost of a single eyepiece.

Interface with M42x0.75 Thread: With T/T2 (M42x0.75mm) male thread for T/T2 connectors, work as a t adapter. Connect DSLR or SLR camera to telescope easily via a separate sale t ring adapter. (Adapter not included)

Multilayer HD Broadband Green Film Optical Glass Lens: Offer a high quality observation without introducing additional chromatic aberration. Chromatic corrected; provide high transmittance; ensure clear; sharp views.

The value must have 2x barlow lens doubles the magnification of any 1.25 inch eyepiece;double the capacity of an existing set eyepieces at the cost of a single eyepiece

SVBONY barlow lens provide a high power magnification allow you look more closely and more detailed at the moon's surface and other planet

2X barlow lens adopts 2 element one group broadband green film multi coated optical glass; the housing is blackened to maximize image contrast; both that make image more crisp and sharp without additional chromatic aberration

Barlow lens & moon filter, which are indispensable for astronomical telescopes, improve the working efficiency of eyepieces and expand the eyepiece magnification of 1.25-inch telescope to 2.5 times.

5x Barlow lens has a magnification of 2.5 times in the actual measurement.

Works with telescopes from Celestron, Skywatcher, Mead, Orion, and most brands.

【Double Magnification Barlow Lens】 NEEWER 2X Barlow lens doubles the magnification and capacity of any 1.25" eyepiece, allowing you to look more closely at the surface of the moon or another planet in detail

【Multi-layer HD Optical Glass Lens】 Anti-reflective internal finish to maximize image contrast. The optical glass lens offers high quality viewing without introducing additional chromatic aberration. Color correction; provides high light transmission; ensures a clear, sharp view

【Interface with M42x0.75 Thread】The T/T2 (M42x0.75mm) male thread for T/T2 connectors makes it easy to connect DSLR or SLR camera to your telescope via a T-ring adapter (Adapter not included)

The lens is small and light, easy to carry with you.

It is durable, ready for use under extreme conditions

The lens has all the necessary indicators: indicator of distance, diaphragm, depth.

F1.7 LARGE APERTURE：50mm F1.7 is full width large aperture fixed focusing lens, because lens has large aperture of F1.7, you can see excellent background blur effect when shooting portraits, you can shoot effect of plane model without going to studio.

EXCELLENT SHARPNESS AND FOCUS：50 mm F1.7 is known for its sharpness and focusing out , more real to show form and stereo perception of objects, do not need to consider zoom, because structure is simple, less lenses can achieve high image quality under particular focusing,can more concentrate on imaging quality, restore real look of things as they are.

ALLOY + OPTICAL GLASS MATERIAL：The large aperture lens is made of high quality materials, which are durable and have a long service life. Small size, like other focusing length lenses with same aperture, small and easy to carry, so you won't lose a lot of beautiful scene.

PENTAX f=55 mm

LENS MADE IN JAPAN φ49

MPN:PENTAX 55mm F1.8 F/1.8