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Message: <blockquote data-quote="Can Popper" data-source="post: 610018" data-attributes="member: 39163">Hi John,  I'm glad you asked because I was looking for the exact same thing.  The ideal eyepiece that you and I were looking for must have:1.  Long eyerelief2.  Lowest power3.  Widest Field of ViewUnfortunately the above three starts trading each other off at around 20mm.Thus, the best candidates I've found are the:1.  Pentax XW 20mm - 70 degree FOV2.  Orion Stratus 21mm - 68 degree FOV3.  Vixen Superwide Lanthanum 22mm - 65 degree FOV4.  Siebert Ultra 24mm (reviewed above-it was my choice) - 65 degree FOV5.  Televue Panoptic 24mm* - 68 degree FOV but only 15 mm eyerelief6.  Orion Epic 25mm - 55 degree FOV (only inexpensive eyepiece out of the bunch)7.  Siebert Ultra 28mm - 60 degree FOVAll seven will work well with the Pentax and have good to awesome optics; also they all have eyerelief of at least 20mm (except the Panoptic).  With the exception of the Epic, the rest belong to the highest end ($$$).So out of this list, you are faced with a choice.   Do you want a wider field and thus use less camera zoom to eliminate vignetting?  If yes, go for eyepieces on the top of the list.  Or do you want better depth of field and slightly more use of camera zoom to eliminate vignetting?  If yes, then go for the bottom of the list.  Maybe you want the combination of both, then the middle of the list would be best.Choices...Choices...*EDIT* I'm attaching some fine pictures of birds I took with the Siebert Ultra 24mm.  Notice in the 2 birds picture how the wide field could accomodate both birds with good depth of field.</blockquote>

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