Going lighter is never inexpensive.
Lighter pack like an Arc Blast or golite jamii – saves about a pound
Lighter Johns like silk – 4-5oz
Lighter rain gear. YOu can do that from 4.5-10 oz depending on how much you want to spend.
Go to a quilt for a hammock – should save at least 8oz but expensive or myog.
Buy some titanium foil and build a cone wood stove.
MYOG a double 1.1 ripstop hammock. Mine weighs 20oz with SUL suspension.
That alone will save 2#.
Lighter still would be a double M50 hammock 14oz with SUL suspension.
Understand the camera as I am a camera nut too but a RX100 3 weighs about 10oz and takes great photos, but you would need a filter adapter. If you are into film cameras go find a used Contax TVS 2. Has manual controls filter ring and is tiny. Very light camera and very sharp optics.
Without the camera, water, worn cloths consumables or food 12# is easy to hit without a ton of $. 9-10# is not too bad.
Going below 9# into the 6-7-8# area can be very expensive.
In general I am at about 8# right now with an Arc Blast, WM summerlight bag and 20dF UQ.
With a lighter pack and more money I can get down to around 7#.