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Your cart is empty.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. It also features a rubber eyepiece ring designed for comfortable viewing even with eyeglasses. Compatible with the following: PF-65 and PF-65 ED II series spotting scopes, PF-80 series spotting scopes, PF-100 series spotting scopes.
JESUS
Reviewed in Spain on June 12, 2024
Ocular zoom diseñado en exclusiva para el telescopio terrestre Pentax PF65 ED A II.Muy buena visión en todo el rango de aumento,incluso al máximo de 60x la visión es bastante decente.Lo único que a mí personalmente me molesta es que tiene un "efecto cerradura" bastante acusado y aunque a la mayoría de la gente no le importa a mí me molesta bastante.Si obviamos ese detalle es un buen ocular para este telescopio.
JESUS
Reviewed in Spain on August 25, 2023
Ocular perfecto para el telescopio Pentax PF65 ED a II para el cual está diseñado.Muy buena nitidez y claridad.Incluso con el gran aumento de 46x que tiene no se aprecia prácticamente ninguna aberración cromática incluso en situaciones de alto contraste.Muy buena compra.
JESUS
Reviewed in Spain on August 25, 2023
Ocular perfecto para el telescopio Pentax PF65 ED a II para el que está diseñado ofreciendo un aumento de 32.5x.Nitidez y claridad por encima de su precio.Sin rastro de aberraciones cromáticas.Muy buena compra.
Richard H. Wood
Reviewed in the United States on January 24, 2022
Bought from Amazon Warehouse, no longer in original packaging but at a substantial cost savings. As other reviews note the zoom is quite stiff when new but does loosen up with use. As received the zoom is much stiffer than on either my Baader or Svbony zoom eyepieces. I have manipulated the zoom ring on this one enough so it is beginning to loosen. Very short throw on the zoom ring of only about 90 degrees. Presumably a return as a few scratches visible on the chromed metal nose piece so apparently tried in a non compression ring equipped eyepiece holder.
Richard Armstrong
Reviewed in the United States on November 27, 2020
This was purchased for use in a Pentax 65ED. My other occulars are the green ones and this does not equal them but then it cost much less. I would not purchase it again.
retchef
Reviewed in the United States on March 25, 2017
good for close work but no ED glass makes it worthless at anything farther than 200 yds
Octavio R.
Reviewed in the United States on February 20, 2015
Excellent eye piece!
david dorusak
Reviewed in Canada on January 2, 2015
works great with my pf 80 ed pentax spotting scope
Albqdane
Reviewed in the United States on September 16, 2013
I use this 8.5mm eyepiece with a 9-1/4" telescope when the seeing conditions allow for 276x magnification, such as for planets, small nebula or double stars. I have a number of quality brand eyepieces to choose from but I usually select one of the Pentax's. I'm not sure why, others might have some supposed advantage in field of view, side shielding eye-cups etc. The Pentax's probably win out because of their comfort of use. Looking at faint celestial objects requires patience and time for the atmosphere and the eye to be aligned just right and so an eyepiece that is easy to center and focus gets the results. If I sell off some of these toys, the Pentax's will be the last to go.
MAW
Reviewed in the United States on May 26, 2011
The 12mm XF is a great eyepiece - very high contrast on planets and deep-sky. Excellent fit and finish; adjustable eyecup and excellent eye relief. Sharpness and contrast rival my Takahashi orthos. The 8.5mm XF is great as well.
Buster T. Fox
Reviewed in the United States on March 26, 2011
Pentax makes this eyepiece for their 65mm spotting scopes but I use it for astronomy. In fact, I use two of them in my binocular telescope because they have much better light throughput than any other brand I've used (though I've never looked through any Zeiss eyepiece). I see more individual stars in a field and more of the glow from a galaxy through the 8.5XF than Televue e.p.s The Pentax XLs are better known in the hobby, probably because they have a slightly wider apparent field of view and also because there is a greater range of focal lengths to choose from than the 2 e.p.s in the XF line (I believe the other is 12mm and it's reported that field curvature is a problem with that one-no such problem with the 8.5).
B Schmidt
Reviewed in the United States on November 14, 2011
I bought this to go with the PF80ED and thought this was the high end eye piece, but realized later that it wasn`t. When it arrived, I used it with the PF80ED ..... I do not know what the view from the more expensive lens would have looked like, but I am very satisfied with this lens and scope body combo. I can only compare it to a Leupold 40x60 spotting scope that I had previously used, but the view from the Pentax is extremely clear and has a very sharp view. I wanted this for 200-500 yard viewing of targets with a .224 cal bullet and I have not been able to get to the range and see exactly what this combo does, but what I have looked at from my back deck at various distances is impressive. I had a chance to purchase the more expensive eyepiece before I knew what was what, but I missed the boat. I really would like to have compared the two lenses and see what difference there is. Oh well I got a very good price on the eyepiece and PENTAX PF80ED body, sooo ... ignorance is bliss on this one .... I am very pleased with what I have.B Schmidt
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