مخفف/مسطح 0.77x لتلسكوب Esprit 150DX (S20208)

Took a chance on this reducer for my Esprit and the difference is immediate—the f/6.2 speed makes framing on my APS-C sensor a breeze. The 34mm fully illuminated field is sharp corner to corner, no vignetting.

I was a little worried the back-focus adjustment would be tricky, but swapping to the M48 ring was straightforward and gave me a clean 55mm spacing. The full-frame coverage is sharp edge-to-edge with my Esprit 150—definitely worth the upgrade from my old reducer.

Finally, a flattener that actually delivers a flat field across my full frame sensor. The drop to f/6.2 made a noticeable difference in my exposure times without compromising star shapes at the corners.