Today I installed a 11 litre (expandable to 15 litres) tank bag on my Triumph Tiger 800 XRx to hold my DSLR camera. This goes well with the 13 litre Slipstream tail bag which holds my air compressor, puncture repair kit, toolkit and emergency medical kit. Just right for short and sweet morning rides or even a day long ride.
Both products are from SW-Motech and although they are not water proof, they come with rain covers.
The tank bag stays off the tank by sitting on a tank ring that is bolted onto the fuel cap ring. To remove the tank bag simply pull a tag to release the lock. To put back just press the tank bag down and it clicks into position. Very neat system.
Purchased online from BigBadBikes.com