This will be a quick review for this backpack, based on a M 4/3 user's experience. I've found plenty of reviews on the larger 22L version, but not much on the 16L. It's virtually the same bag, except slightly smaller. Photos were taken with my smartphone, so you can find better quality photos on Lowepro's site here: Lowepro | Photo Hatchback AW series The Bag: The bag is very low-profile compared to many others I have looked at. It has a minimalist approach to styling, with only a few zippers and 2 mesh pockets on the sides to hold water bottles or a tiny tripod. (Note: I can fit my Oben CT-3500 in one of the pockets, but it is pretty stretched) The main camera compartment is at the bottom, and rests against your back, so it's not made for fast lens switching without removing it off your body. that's fine for me, as I plan on using this mainly when traveling. (Which I just did on a trip to L.A.) I have a Thinktank Citywalker 10 that I use as my normal daily bag. One of the biggest problems us mirrorless users have is the depth of most bags is made for larger kits. That is not the case with this bag, as you can see below: In this compartment I can fit my OMD with the 1st part of the HLD-6 attached (but no lens attached), and the 2nd part in a separate section. I can also fit the Panny 25 1.4 (underneath the flash pouch) and 45-175, along with the Oly 12-50, all with hoods attached. I also put in the EPM2 with the 14 2.5 attached. All of this fits nicely, and the depth is perfect for it. And for those that care, the entire compartment can be removed to use the backpack without it. Another photo of all the gear I keep in the bottom: Top compartment has alarge open space, with a divided mesh pocket on one side with a zippered compartment on the other. In here I keep a ton of stuff. A samyang 7.5 fisheye and Oly 45 1.8 both in Neoprene pouches, plus spare batteries, chargers, cleaning supplies, an ultrapod 2, filters, cables, etc. Then there's a zipper on the back that has 2 separate sections, which I kept my ipad and nexus 7 for the past trip. I'll normally only bring one or the other, but it was nice to be able to bring both. Here's everything I took with me in the bag: It's pretty insane how much stuff I put in this thing, and I never felt like it was over-stuffed. Even with all of this equipment, the weight surprisingly wasn't bad. I would imagine that's because the bag is not as deep as others, so all the weight is closer to your body. Quick summary: Pro's: Great compact size with lightweight materials Lower compartment perfect size for m4/3 gear Lot's of available room for miscellaneous goodies Comfortable to wear Doesn't scream "Camera Inside"! Holds an ipad with smartcover and thin backplate protector attached. (Will not fit with a larger-style case on it) Con's: Not easy to attach a tripod Wish it came with a removable divider for the top compartment Needs better way to stow the excess on a few of the straps I will definitely be keeping this bag and using it when I travel, and getting rid of my old Tenba backpack. If this is the style bag you have been considering, give this one a good look.