Pentax Papilio II 6.5x21 Binoculars
- Magnification: 6x
- Objective Lens: 21 mm
- Focus Type: Close
- Weight: 0.65 pounds
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A specialty compact binocular built for close focus versatility rather than raw magnification, worth choosing specifically for that dual purpose.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B00SKO4A8QCategory: Binoculars
Overview
Compact and close focusing, the Pentax Papilio II is a 6.5x21 binocular built around an unusually short minimum focus distance, letting it double as both a standard binocular and a close-up viewing tool for insects and small objects.
Papilio models use a distinctive internal focusing system that lets the eyepieces converge for extreme close focus, a feature Pentax built this line around rather than a bolted on accessory. The rubber armored body and 0.65 lb weight keep it in the compact class.
- 6.5x magnification, 21mm objective
- Close focus optical design
- Rubber armored gray body
- 0.65 lb weight
Who it's for
Nature observers who want to view both distant birds and close subjects like butterflies or flowers with one binocular, rather than birders focused purely on long distance viewing.
Pros and cons
- Close focus design works on insects and other near subjects
- Compact 0.65 lb rubber armored body
- 6.5x magnification with a 21mm objective
- Modest magnification limits reach on distant subjects
- Small objective lens limits low light brightness
Performance notes
The close focus design is the defining trait here, letting the binocular resolve subjects at very short distance where standard binoculars cannot focus at all, while still functioning as a compact general use binocular at longer range.
Specifications
| Brand | Pentax |
|---|---|
| Dimensions & fit | |
| Weight | 0.65 pounds |
| Dimensions | 4.5 × 4.3 × 1.6 inches |
| Dimensions | 4.48 x 4.33 x 1.65 in |
| Construction & materials | |
| Material | Rubber |
| Color | Gray |
| Other details | |
| Magnification | 6x |
| Objective Lens | 21 mm |
| Focus Type | Close |
Frequently asked questions
What makes the Pentax Papilio II different from a standard compact binocular?
Its close focus design, which lets it focus on very near subjects in addition to standard distance viewing.
What is the magnification and objective size?
6.5x magnification with a 21mm objective lens.
How much does the Papilio II weigh?
0.65 lb.