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 Pentax 70513 SMC-XW 7 1.25-Inch Eyepiece For Telescopes Pentax Spotting Scopes     
Brand New in its Original Retail Box


Authorized Dealer - Mfr # 70513 / UPC 027075075214


Here is what you get:

  • Pentax SMC XW 7mm Wide Angle Eyepiece (1.25") - 55x w/ 65mm, 71x with 80, 90x with 100mm Pentax Scopes
  • Push-On Front & Rear Caps
  • Plastic Helicoid Case
  • Limited Lifetime Warranty

Product highlights:

  • 70° Apparent Field of View
  • 20mm Eye Relief
  • Waterproof & Fogproof
  • Fits Pentax Spotting Scopes



Pentax premium spotting scopes adhere to the American standard of 1.25" eyepiece thread diameter, facilitating the use of eyepieces from independent manufacturers. That also means, of course, that the wonderful Pentax eyepieces can be used in other telescopes and spotting scopes which accept 1.25" eyepieces.

Pentax eyepieces are a near consensus choice amongst serious amateur and professional astronomers as the best that's out there, quite an accomplishment indeed given the fervent passion of the collective.

The XW line represents an even further improvement upon the venerable XL series. The apparent field of view has been expanded to a whopping 70°, but remarkably this was achieved without reducing their impressive eye relief of 20mm. There are eyepieces available with wider apparent viewing fields, but to take advantage of that wider field you'll have to be much closer to the eyepiece. This isn't exactly conducive to extended observing sessions. Additionally, there are lesser eyepieces with similar claims of 70° apparent viewing fields, but the performance upon the edge of these eyepieces isn't on par with the Pentaxes. If you're using a telescope with a fast aperture, this is of particular importance.


Pentax 70513

71x with the PF-80ED
74x with the PF-80ED-A
90x with the PF-100ED

Angle of View
1.0° with the PF-80ED & PF-80ED-A
0.8° with the PF-100ED

Field-of-View (@ 1000 Yds)
52' (17 m at 1000 m) with the PF-80ED & PF-80ED-A
41' (14 m at 1000 m) with the PF-100ED

Exit Pupil Diameter

Eye Relief

Relative Brightness

Twilight Factor
75.4 with the PF-80ED & PF-80ED-A
94.9 with the PF-100ED

Waterproof & fogproof

2.4 x 4.7" (61 x 119mm) WxH

0.86 lb (390 g)

Packaging Info

Package Weight
1.2 lb

Box Dimensions (LxWxH)
7.5 x 4 x 3.4"



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Filed under: Eyepieces & Accessories