Baader Planetarium M48 間隔環 用於MPCC Mark III彗差修正鏡轉Canon EOS T-Ring - MPCC-SPCR

The thread fit is machined precisely, so my coma corrector now sits exactly the right distance from the sensor. Attaching it to the T-ring took less than a minute and my stars are finally sharp edge-to-edge.

Finally got my MPCC III properly spaced for my Canon T-ring. The M48 threading was precise and the ring fit snugly without any wobble. Now my stars are perfectly round edge to edge.

The threads on this spacer ring allowed me to attach my coma corrector directly to the T-ring without any adapters, and the fit was perfectly snug. It solved my back focus issue in one simple step and feels solidly machined.