Okay, odd query... Just looking for an easier way to carry my camera when I've got the 500mm attached. It fits into various backpacks, but given it's used mainly for wildlife shots it would be better to have 'quick' access.
I've come up with an idea/design for a snug holster-type thing with an end that velcros/unclips off to reveal the lens end, and a flap for ease of access to camera controls and viewfinder.
Want it to be vaguely waterproof (showerproof) so was thinking neoprene, which also provides a little padding. Just wondering how to connect bits I cut out as I don't sew (and don't know how easy it is to sew). Maybe I could just draw up the plans and hand the fabric to a sewing shop place?
Or use the fabric they make the likes of Crumpler bags out of?