二手 Pentax Auto Bellows M 單元，附雙重釋放快門線

The double release cable works exactly as needed for sharp handheld macro shots. No wobble in the bellows extension and the whole setup feels solid even at full extension.

I was a bit nervous buying used, but the bellows glide is buttery smooth and locks tight at every extension. Hooked up the double release to my lens and body, and focus stacking got noticeably quicker. A solid piece of kit for anyone serious about macro.

The double release cable works flawlessly with my macro setup — mirror locks up and shutter fires without a hint of vibration. Bellows slides are precise and hold position even at full extension. Came well-packed and honestly described, which is rare for used gear.