Lowepro Flipside Trek BP 450 AW pentax adapter Please do not buy this

Please do not buy this as a standard 50mm lens and expect it to be "good

with some brassing on the rails which will either look cool or bad depending on whether you like used equipment that looks like it's been used

NOTE: this is not for the manual-focus C/Y mount

for a 300mm lens

Lowepro Flipside Trek BP 450 AW pentax adapter Please do not buy thisThe Lowepro Flipside Trek BP 450 AW is a mid sized backpack with an unfussy look and a secure equipment opening that faces your back, so it can't be opened when you're wearing it. Seems awkward at first, except you generally need to take off your pack to access your gear anyway, and this way no one can unzip your pack and run off with your goodies while it's on your back. Rugged and well made, with a built in waterproof cover for harsh weather. In