Pentax 1.25" SMC XF Zoom Eyepiece: 6.5mm-19.5mm

Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Contiguous US / Lower 48:
Free shipping applies to orders over $50 using our chosen carrier/method. Faster paid options are available at checkout.
Alaska, Hawaii & US Territories:
Free shipping applies to many—but not all—products. Enter your ZIP code in cart or upon checkout to confirm options and costs.
International:
International orders do not qualify for free shipping. Shipping, duties, brokerage, tariffs, and taxes are the customer’s responsibility. Some items may be restricted due to export, size, or manufacturer limitations.
- Designed for use with Pentax spotting scopes and with astronomical telescopes with 1 1/4" focusers/eyepiece holders
- Weatherproof construction for greater durability
- Features high-grade Lanthanum glass with high refraction and low dispersion
- Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high light transmission performance
- Removable eyecup allows attachment of an adapter of 43mm in diameter with a 0.75mm pitch (not included)
PENTAX XF eyepieces offer high-refraction, low-dispersion lanthanum glass elements to provide high-resolution images with minimal aberrations. PENTAX-original smc full-surface multi-layer coated optics reduce glare while providing maximum light transmission and color quality. Advanced computer simulation design technology was developed to reduce internal reflections, producing brighter, clearer images. Ideal for observation and photography of planets.
With JIS Class 4 weatherproof construction, the XF eyepieces are more durable and water resistant.
The PENTAX XF Zoom eyepiece provides magnification of 20 to 60 times with the PENTAX 65mm spotting scopes, an apparent field of view of 42 to 60 degrees, and an eye relief of 11mm to 15mm. Designed for use with PENTAX brand spotting scopes and with astronomical telescopes with appropriate 1 1/4" focuser.
The rotatable eyecup offers an adaptor-mounting screw/thread when removed (single-focus models: 30.5mm in diameter with a 0.5mm pitch; zoom: 43mm in diameter with a 0.75mm pitch).
PENTAX XF eyepieces offer high-refraction, low-dispersion lanthanum glass elements to provide high-resolution images with minimal aberrations. PENTAX-original smc full-surface multi-layer coated optics reduce glare while providing maximum light transmission and color quality. Advanced computer simulation design technology was developed to reduce internal reflections, producing brighter, clearer images. Ideal for observation and photography of planets.
With JIS Class 4 weatherproof construction, the XF eyepieces are more durable and water resistant.
The PENTAX XF Zoom eyepiece provides magnification of 20 to 60 times with the PENTAX 65mm spotting scopes, an apparent field of view of 42 to 60 degrees, and an eye relief of 11mm to 15mm. Designed for use with PENTAX brand spotting scopes and with astronomical telescopes with appropriate 1 1/4" focuser.
The rotatable eyecup offers an adaptor-mounting screw/thread when removed (single-focus models: 30.5mm in diameter with a 0.5mm pitch; zoom: 43mm in diameter with a 0.75mm pitch).
| Manufacturer | Pentax |
|---|---|
| Eyepiece Series | XF |
| Focal Length | 6.5mm-19.5mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 40°-60° |
| Eye Relief (Designed) | 11mm-15mm |
| Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
| Coatings | Fully Multicoated |
| Barrel Type | With safety undercut |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 52x80mm |
| Height (With Eyeguard Extended) | 90mm / 3.54" |
| Maximum Width | 50mm / 1.9"6 |
| Rubber Eye Guard | Yes |
| Weight | 8.5 oz / 240 g |
| Country of Manufacture | Japan |
- Designed for use with Pentax spotting scopes and with astronomical telescopes with 1 1/4" focusers/eyepiece holders
- Weatherproof construction for greater durability
- Features high-grade Lanthanum glass with high refraction and low dispersion
- Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high light transmission performance
- Removable eyecup allows attachment of an adapter of 43mm in diameter with a 0.75mm pitch (not included)
PENTAX XF eyepieces offer high-refraction, low-dispersion lanthanum glass elements to provide high-resolution images with minimal aberrations. PENTAX-original smc full-surface multi-layer coated optics reduce glare while providing maximum light transmission and color quality. Advanced computer simulation design technology was developed to reduce internal reflections, producing brighter, clearer images. Ideal for observation and photography of planets.
With JIS Class 4 weatherproof construction, the XF eyepieces are more durable and water resistant.
The PENTAX XF Zoom eyepiece provides magnification of 20 to 60 times with the PENTAX 65mm spotting scopes, an apparent field of view of 42 to 60 degrees, and an eye relief of 11mm to 15mm. Designed for use with PENTAX brand spotting scopes and with astronomical telescopes with appropriate 1 1/4" focuser.
The rotatable eyecup offers an adaptor-mounting screw/thread when removed (single-focus models: 30.5mm in diameter with a 0.5mm pitch; zoom: 43mm in diameter with a 0.75mm pitch).
| Manufacturer | Pentax |
|---|---|
| Eyepiece Series | XF |
| Focal Length | 6.5mm-19.5mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 40°-60° |
| Eye Relief (Designed) | 11mm-15mm |
| Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
| Coatings | Fully Multicoated |
| Barrel Type | With safety undercut |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 52x80mm |
| Height (With Eyeguard Extended) | 90mm / 3.54" |
| Maximum Width | 50mm / 1.9"6 |
| Rubber Eye Guard | Yes |
| Weight | 8.5 oz / 240 g |
| Country of Manufacture | Japan |

Pentax 1.25" SMC XF Zoom Eyepiece: 6.5mm-19.5mm
