To clarify, /u/s_s's original point (while a tad rude) is that ultralight backpacks are built as part of a system, designed for very low total pack weights.
My point is that "ultralight" has multiple meanings, and his argument was moot. I specified what I wanted to carry in the way of electronics. You can make a stove out of bricks or titanium. The brick option is not necessarily more comfortable to carry or lighter. Ultralight has became somewhat of a subjective term or a colloquialism. It is quite apparent in my first post that I was looking for lightweight alternatives to tents, backpacks, knives, etc, as a means to lower base-weight.
Once you achieve a low enough base-pack-weight (BPW), you do not require the extra padding and frame strength, so they present an opportunity for weight saving by reducing their size and therefore load carrying ability. So generally, UL packs are not designed to handle a laden pack and an additional 6lbs load of camera equipment. This is why /u/s_s suggested a commercial pack may be more suitable.
This argument confuses the colloquialism with the true definition. Which is why I stated the importance of comprehending my argument in its entirety rather than arguing in the way that he did. I understood his argument completely, but it was fallacious.
You link to both a tent and a pack, indicating that you are in the market for both, with the intention of reducing your BPW. Tent The terra nova ultra 1 is quite lightweight at 600g, but very expensive at £800. You can go lighter for cheaper. For example at cuben flat tarp will weigh around 300g and cost around £200 (half the weight and 1/4 the cost).
I don't care too much about the budget, that said, I don't want to simply throw a £400 knife away (that's why I made the comment about flying with expensive knives).
Pack As I've already mentioned, packs are a trade off between weight, load capability and durability. You also want to have it set up for carrying camera equipment. First off, we need to get an idea of what kind of load you will realistically be carrying.
You can half the weight of the camera gear. A lot of those electronics will be carried outside of the backpack.
To say that "This thread is not to discuss or imply I should take less photography equipment" is being a bit naive. Especially when you previously mentioned you were planning on carrying "A waterproof solar panel". Solar panels are totally dead weight in your pack. You're better off carrying additional batteries and charging them at towns.
This depends on the camera and solar panel. In some cases, it's better to not bring a solar panel and to take an external USB battery to charge the in camera batteries. I've simulated the scenario and a solar panel makes sense. Your statements here are incorrect.
Camera equipment should be subject to the same scrutiny that all your equipment is.
This implies I think otherwise. I do not, however, this topic is not about camera equipment, therefore I did not want to discuss it to any great extent. If you want to make a thread about camera equipment, be my guest, but this is not the thread for that