One barrel across a range, with a field that narrows · review
An 8–24 mm zoom eyepiece in a 1.25 in barrel, multi-coated, with a fold-down eyecup and an apparent field running from 40 to 60 degrees across the range.
The bottom line An honest zoom that publishes its weakest figure alongside its strongest.
Forty to sixty degrees across the range. Every zoom eyepiece narrows its field at the long end, and most listings quote only the wide figure. Publishing both is what lets a buyer compare it with a fixed eyepiece honestly.
Three or four fixed eyepieces, and every swap between them. On a cold night, with gloves, near a mount that shifts when touched, not changing the eyepiece is worth more than the last few per cent of sharpness.
More glass in the path, and a narrower field at 24 mm than a plain Plössl of the same focal length. Those are the structural trades of the design rather than faults of this example.
On a 1500 mm Maksutov that is 62x to 187x — almost the whole useful range of the instrument in one eyepiece. On a short refractor it is a much smaller span, which is why zooms suit long focal lengths best.
German Amazon store sat at about 126 € on the day of the survey.
British Amazon store lists it in local currency, which the euro range above sets aside.
American, French, Italian and Spanish Amazon catalogues hold a record for it that nobody is selling.
Figures as Keepa reported them on the day this page was last updated. Stock and pricing shift without warning.
Prices quoted in this text were read on 17 September 2026. The live price is at the top of the page.
| Focal length range | 8 mm to 24 mm, continuously variable |
|---|---|
| Apparent field at both ends | 40 to 60 degrees across the range, as the maker states it |
| Eye relief | Fold-down, for use with or without spectacles |
| Parfocality | Not published by the maker. |
| Action | Not published by the maker. |
| Stops | Not published by the maker. |
| Barrel size | 1.25 in |
| Coatings | Multi-coated on every lens surface, per the maker |
| Body | Not published by the maker. |
| Amazon reference | DE B0007UQNV8 · US B07MCGD3FR · GB B07MCGD3FR · FR B07MCGD3FR · IT B07MCGD3FR · ES B07MCGD3FR |
| EAN | 0050234932301 |
That is how most zoom designs behave: the field stop is fixed, so as the focal length increases the apparent field shrinks. Forty degrees at 24 mm is noticeably tighter than the fifty a Plössl gives.
It replaces the convenience of a set. A good fixed eyepiece at a given focal length will generally outperform a zoom at the same setting, and the zoom will be used far more often.
8–24 mm variable · 1.25 in and 2 in · M43 camera thread
An 8–24 mm zoom that fits both 1.25 in and 2 in focusers and carries an M43 camera thread, supplied with an extensive accessory set.
Best for: An owner of both 1.25 in and 2 in focusers who also photographs through the eyepiece
≈ $396 / €275
7–21 mm variable · 1.25 in · metal body
A 7–21 mm zoom eyepiece in a metal body for 1.25 in focusers, described by the maker as fully multi-coated.
Best for: Reaching shorter focal lengths than an 8–24 zoom without buying a Barlow
≈ £23
114 mm mirror · 900 mm focal length · alt-azimuth mount
A 114/900 Newtonian on a simple alt-azimuth mount, supplied with three eyepieces, a 6x30 finder and a 1.5x erecting lens, recommended by the maker from age eight.
Best for: A family telescope where nobody wants to learn polar alignment
≈ £150 / €142
