در مورد درپوش لنز DPreview مطلب جالبی نوشته:
.It's not often we talk about lens caps, but this one's different. To match the 'Limited' ethos, Pentax has provided a beautifully engineered screw-in aluminium cap, which is even lined with felt to protect the front element.
Like all screw-in caps, though, it's hopelessly impractical in actual use, especially if you change lenses frequently. Buy a 49mm clip cap instead (just make sure it fits inside the hood)