SV135 Zoom Eyepiece, Zoom 7 to 21mm 1.25 inch Telescope Eyepiece, 6 Element 4 Group Telescope Accessories for Astronomic Telescopes Visual

This eyepiece helps cancel/absorb some light and allows for more clarity when viewing in the suburbs. (My backyard) After about 5 min adjusting eyes, many more distant items became visible with this eyepiece, than any other I have. The ability to zoom with 1 piece eliminates the hassle of changing, dropping, or looking for the next piece you want. Price point; this is a very good product that can replace 5 other eyepieces, or save some cash by only getting this 1 zoom. Happy star hunting.

I can't say enough good things about this eyepiece. It is phenomenal! I don't know how they produce such an optically excellent eyepiece at such a low price point. I bought a couple of entry-level "junk" telescopes (according to more experienced amateur astronomers) second-hand and after a few adjustments to them and with the SVBONY SV135 attached, they perform admirably. The images are clear and sharp throughout the zoom range. On my larger telescopes, this eyepiece performs as well as--if not even better than--some which cost several times as much. If you've ever had any qualms about using a zoom eyepiece, the SV135 will lay them to rest. It is that good.

I love this eyepiece and use it extensively, especially for double star viewing. It makes splitting close binaries so much more efficient. It's a starter zoom eyepiece but the quality is good and is fully functional. I'm pleased with this purchase.

Fantastic Value – Versatile and Clear Views! I am very impressed with the SVBONY SV135 eyepiece. For the price, it’s an absolute gem. The zoom range from 7–21 mm makes it incredibly convenient—I can switch magnifications without fumbling with multiple eyepieces in the dark. The zoom action is smooth, and the build quality feels solid and reliable. Optically, the views are sharp and clear. The Moon looks crisp, Jupiter’s bands are visible, and I was even able to catch details in the Orion Nebula. The eye relief is comfortable, and it works well with or without glasses. Of course, the field of view is narrower at the low end (21 mm), but it opens up nicely as you zoom in. For me, that’s a small trade-off considering the convenience and performance it delivers. Overall, this eyepiece has quickly become one of my favorites in my kit. Whether you’re a beginner or just want a versatile grab-and-go eyepiece, the SV135 is hard to beat. Highly recommended!

I bought this as my first real eyepiece and after using it a bit, I love it. It may not be the wisest first choice but I think its a pretty good eyepiece. It feels premium, nice and heavy. Solid field of fiel and easy to adjust the size. It is larger than I expected but still a solid eyepiece.

Good quality, fair price and very quick delivery.

To be fair, I don't have any experience with other Zoom eyepieces, but this SV135 model from SVBONY works very well. The title to this review is because you get 5 different focal lengths from 7mm to 21mm, and you can figure out what works best for you before you spend more money on individual eyepieces. Solid weight so it doesn't feel cheap, and very smooth movement when you twist to zoom. It comes with two rubber dust caps that fit nice and snug without being difficult to remove. Views through the eyepiece are sharp and clear, the only downside is you will need to adjust your telescope focuser slightly. There is also some reduction in field of view (i.e. how much of your target will fit in the eyepiece), but that isn't an issue. I have a few different products from SVBONY, and I am always impressed with their quality. If you are on a smaller budget, I highly recommend this zoom eyepiece.

I have to say this is an excellent eyepiece, great construction firm/grippy handle and an easy zoom adjustment knob. Excellent quality. This is an unprocessed photo I took of the moon with an iPhone 15. Highly recommend getting the 7-21mm Zoom piece!