Καλημέρα παιδιά, Θα ήθελα την γνώμη σας για το παραπάνω zoom προσοφθάλμιο. Υπάρχει κάποιος που να το έχει και να το χρησιμοποιεί; Δέν είμαι fun των zoom προσοφθαλμίων, αλλά χρειάζομαι να προσθέσω ένα στην συλλογή μου φθηνό και οικονομικό για χρήση σε φίλους ή σε παιδιά, και ιδίως σε πανέμορφες καλλονές με μάσκαρα. Ευχαριστώ Design: 4 elements in 3 groups Focal length: 8-24mm Mounting barrel diameter: 1.25" Filter threads: Yes Apparent field of view: 40 degrees at 24mm, 60 degrees at 8mm Eye relief: 15mm (at 8mm) to 18mm (at 24mm) Coatings: Fully multi-coated Parfocal: Yes Eye guard: Folding rubber Weight: 7.9 ounces Length: 4.25" (eyecup erect) Diameter: 1.9" Accessories included: Dust caps and a fitted plastic case Country of Manufacture: Red China Warranty: One year http://www.chuckhawks.com/comparison_zoom_eyepieces.htm The Celestron zoom is the bargain eyepiece in this comparison. Yet, despite its simpler design, its optical quality is (visually) very close to the other contenders, a tribute to good manufacturing. There is probably a lesson in there somewhere: execute a simple design correctly and it may be competitive with a complex design that is harder to manufacture. (If only we had access to an optical bench, so that we could "split hairs." -Editor.) The Celestron zoom appears to be well made, although not in the same class as the premium Tele Vue and Vixen zooms. The Celestron is not as smooth in operation as the premium eyepieces and it is noisier when the zoom ring is rapidly turned from 8mm to 24mm. However, it is much less expensive than the other zooms and performs well, making it the standout in the "bang for the bucks" arena. If your Chancellor of the Exchequer is a bit tight with funds, buy the Celestron 8-24mm zoom and never look back.