Es 52

[Ignoro]

I've searched the internet (or CN and SGL) and found mixed info about these...

Do any of you own ES 52, how good are they really? Are they premium simple design like TV plossl, with nice premium coating? Or they are just some nothing special eyepiece with ES stamped on it?

I can't seem to find any on used market, so no one is selling them. There doesn't seem to be much hype about them now...

I also found some huge review here, from someone who signed up just to make that review, it does seem a bit odd 👨‍👩‍👧‍👧... 

 

[Don Pensack]

They have more elements than Plössls and are larger and heavier.

As a result, eye reliefs are longer than Plössls and so they are usable down to 3mm focal lengths.

But, like many ES eyepieces, control of astigmatism at the edges in fast focal ratios, or control of internal light scatter, are the two places where they don't measure up to the high end eyepieces.

Bear in mind, these are very inexpensive eyepieces, so match your expectations to the price.  If you look at it that way, they are good eyepieces.