I found a setup that works really well without overcomplicating things. The R5 plus that adapter adds a weird bit of height that makes many shallow bags bulge. I have been extremely satisfied using the MindShift Gear BackLight 26L Photo Daypack and honestly think it is the best value for your budget. It is a very practical choice for Iceland specifically because of the design.

• Rear-panel access is a lifesaver so you dont get mud or wet sand on the part that touches your back.
• The interior depth easily accommodates the R5 body and adapter without the zippers straining.
• It includes a high-quality rain cover which is basically mandatory for the weather you are gonna face. It fits your sub-300 budget perfectly, usually retailing around 240. Tbh, paying more for high-end boutique brands often gets you less actual utility. This thing is built for the elements and the zippers are super rugged.

I've dragged my R5 all over, and that adapter definitely makes it sit weird in generic bags. For Iceland's mess, the Shimoda Explore V2 25 Water-Resistant Adventure Backpack is a solid pick under 300. It's rugged and handles the weight well. Also check out the Peak Design Everyday Backpack 20L V2 since the flexfold dividers accommodate the extra length from the adapter easily. Both have way better zippers than your current setup.

Jumping in here because I was just obsessing over this same thing! > my r5 with the adapter just wont sit right Honestly, Iceland is brutal on gear so you need something with serious padding. I was terrified of my R5 getting wet or bumped so I went with the Lowepro Whistler Backpack 350 AW II. It is fantastic because the internal camera unit is super deep, so that extra length from the EF-RF adapter actually fits without poking into the zippers! Plus it has a built-in all-weather cover which is basically mandatory for those waterfalls. If youre still unsure, definitely hit up the B&H Photo Video product Q&A sections. People there are amazing at measuring exact depths for specific bodies. You really want that snug fit so the lens mount doesnt take any stress during hikes. Better safe than sorry, especially with such a pricey setup!!

Same here!

Been thinking about your gear for a bit now. @Reply #2 - good point on the depth issue! Honestly, I've been really happy with my setup but Iceland is a total gear killer if you arent careful. That R5 with the adapter is just tall enough to make most standard bags bulge in all the wrong places. Avoid these mistakes if you can:

• Buying anything with fashion zippers. They look cool but they will jam the second a bit of black sand gets in there.
• Relying on side-access bags. In high winds, you are basically just asking for your camera to take a tumble while you are fumbling with the flap.
• Skipping the harness check. If the bag doesnt have a chest strap, you are gonna be miserable. Tbh, I always suggest checking out sites like Shotkit or even just searching for real-world loadouts on photography forums. Seeing how other people fit their mirrorless bodies with those chunky adapters is a lifesaver. No complaints using that method to vet my gear before I buy... it is way better than trusting the marketing photos which never show the actual reality of how an R5 sits.