Review on Telescopes High Performance 70°Apparent Multi Layer All Weather by Mark Albright

I have a complete set of all Pentax eyepieces including their 8-24 zoom that I have collected over the years. I used to have a mix of TV and BAADER. Sold all TVs and kept a Hyperion III BAADER Zoom. Pentax are excellent and EASY to use. Comfort is very important during prolonged use. It's 70 degrees AFOV, which is comfortable for me. There are eyepieces with AFOV up to 100 degrees, but at the expense of edge artifacts, distortion or reduced light transmission due to the many glass surfaces. With a very high quality APO telescope they are all the best. I like that all 1 1/4" versions are parfocal (focus on the same focal point). The 2" versions are slightly different, but you can use a parfocal ring to make them look the same as other eyepieces.