Does anyone use an Osprey or similar backpack with a camera insert added in, for carrying their underwater rig? If so, what size are you using, and can you share some photos?

Not a technical pack but shares some of the features like a waist belt and a sternum strap, I use the think tank Streetwalker harddrive pack, which meets carry-on dimensions but perhaps not the weight once it is loaded up.

In the pack I've got Left to right:

• EM-1 MkII housing, spare batteries

• Macro port for 60mm macro, INON Z-240 x 2, Zen 170mm dome

• Zen 100mm dome for fisheye, Panasonic 8mm Fisheye, 60mm macro,Olympus 12-40, Panasonic 7-14

I also used to take my OM-1 housing, 140mm port/extension/n85-N120, macro port, 8-15 fisheye 60mm macro, 12-40 lens and strobes to PNG last year.

Weight as shown is about 10-12 kg, it has a laptop sleeve under neath as well. I've had it at least 15 years now and still going strong.

Thanks! My previous MFT system was super compact - Nautical housing, 2x Inon Z240s and a 4.33" fisheye port. I used to fit that into a very small Lowepro backpack that no one ever bothered to check.

For the APS-C rig, I am using the same bag I use to carry my wildlife gear - a Think Tank Airport Accelerator, which weighed in at 14kg as shown below. Just camera gear and batteries, and nothing else - and that too, a single port. While it is quite small and I casually sling it on one shoulder while checking in (while wincing on the inside), i am trying to find a way to shave a couple of kg off it, along with separating some of the items into 2 bags.

Yes it seems significantly heavier than my setup, the backpacks are a similar size and weight mine being 65mm narrower. Mine is lasted at 2 kg empty so not a lot of weight that could be saved. I pack mine with camera/lenses/housings/ports and batteries only. Other bits and pieces including strobe arms etc go in the checked bag.

My OM-1 + housing is 2.6 kg while the R7 is 2.85, a bit heavier but not that much. I think you had the Supe zD-pro strobes, they are double the weight of my Z240s, but I seem to be carrying more lenses and ports than you do.