Nikon LC-77B 按扣式前鏡頭蓋（77mm）

Finally found a cap that stays on securely, even when I toss the lens in my bag. The 77mm size fits perfectly on my standard telephoto—no more fumbling to get it seated.

The snap-on mechanism is really solid—it clicks into place with a satisfying pop and doesn't wobble once seated. I've dropped it a couple times swapping lenses and it's still snug, which is more than I can say for cheaper caps.

Fits my 77mm lens perfectly and stays put even when I throw the camera in my bag. The snap-on mechanism is secure, and it’s much easier to use than a pinch-style cap.